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Heating, AC, Plumbing & Indoor Air Quality Services in Winnetka, IL

Winnetka Service Overview

  • Indian Hill: Indian Hill is known for large lots and architecturally significant estates.
  • Hubbard Woods: Hubbard Woods combines residential streets with shopping, dining, community events, and its Metra station.
  • East & West Winnetka: East Winnetka extends toward Lake Michigan and Centennial Park, while West Winnetka is primarily residential with a strong concentration of pre-war homes.

 

Winnetka is not a place where every service call starts with the same kind of house or the same kind of system. A property near Hubbard Woods can present a completely different setup from an estate in Indian Hill or a home closer to Centennial Park and the Lake Michigan shoreline.

Deljo Heating, Cooling & Plumbing works throughout 60093, helping Winnetka homeowners repair, maintain, and replace heating, cooling, plumbing, and indoor air quality systems. Call 773-829-4295 or contact us online to schedule service.

technicians in front of truck

What We See in Winnetka Homes

There is a lot of variety packed into Winnetka. Indian Hill is known for large lots and architecturally significant estates. Hubbard Woods combines residential streets with shopping, dining, community events, and its Metra station. East Winnetka extends toward Lake Michigan and Centennial Park, while West Winnetka is primarily residential with a strong concentration of pre-war homes.

Architecture is a major part of the local landscape as well. George Washington Maher, Walter Burley Griffin, Howard Van Doren Shaw, and David Adler all designed homes in Winnetka. Crow Island Elementary School, designed by Eliel and Eero Saarinen in 1940, is another major architectural landmark and a National Historic Landmark.

For us, those differences mean one thing: look at the house, understand the system, and solve the problem that is actually there.

Solving HVAC, Plumbing & Indoor Air Quality Issues in Winnetka

Problem: Boilers and steam heat remain a meaningful part of the Winnetka service picture. More than half of the village’s housing was built before 1939, and more than 75% predates 1970. Older estate homes, including properties around Indian Hill and West Winnetka, are among the places where these systems remain especially relevant.

Solution: Central furnaces are also common, so heating service here is far from limited to boilers. Homeowners considering replacement can also look at high-efficiency equipment, zoning, and upgraded controls.

Problem: A plumbing problem does not care whether you are headed to the Winnetka Music Festival, spending the afternoon near Centennial Park, or simply trying to get through the morning at home. When a drain, water heater, pipe, fixture, or sewer line needs attention, the priority is getting the system working correctly again.

Solution: Water heater replacement, fixture upgrades, and drain service are all important parts of the Winnetka plumbing market. Larger projects can extend to repiping, sewer work, flood control, and other system improvements.

Problem: Larger Winnetka homes can create another challenge: getting the whole house to feel the way you want it to feel. Estate-scale properties make zoning and whole-home controls especially relevant because different levels or areas of a house may need more precise management.

Solution: Filtration, purification, humidity control, thermostats, and zoning give homeowners options beyond replacing the furnace or AC unit alone. These systems can be considered together when the goal is better control across the entire property.

Air Conditioning Repair & Installation in Winnetka, IL

Repairmen works on a home's air conditioner unit outdoors.

An AC call near Hubbard Woods may take us into a very different property from one near the estates of Indian Hill. Central air conditioning is common throughout Winnetka’s single-family housing, while high-efficiency replacement is an option for homeowners ready to update older equipment.

Deljo handles:

Hubbard Woods is one of Winnetka’s most recognizable neighborhood centers, with boutique shopping, dining, merchant events, and Metra service. Farther east, Centennial Park brings beach access, tennis courts, and recreation to the Lake Michigan side of the village.

Those settings are different, and the homes around them can be different too. That is why we start with the existing cooling system instead of approaching every Winnetka AC call with the same answer.

“Gabe was wonderful! I called them when my tenants AC went out during the heat wave, and they were able to get over and get everything sorted extremely quickly. He was very thorough and told me everything that was going on even though I was not physically there. Really appreciate the great work!”

Laura S

Beat the summer heat with reliable AC repairs and high-efficiency cooling upgrades. Call 773-829-4295 to book your cooling service!

Winnetka Boiler, Furnace & Heating Services

Boilers and steam heat remain a meaningful part of the Winnetka service picture. More than half of the village’s housing was built before 1939, and more than 75% predates 1970. Older estate homes, including properties around Indian Hill and West Winnetka, are among the places where these systems remain especially relevant.

Heating work can include:

Central furnaces are also common, so heating service here is far from limited to boilers. Homeowners considering replacement can also look at high-efficiency equipment, zoning, and upgraded controls.

Indian Hill gives this part of the article a distinctly Winnetka setting. The neighborhood sits along the western edge of the village and is known for larger lots, estate properties, and significant residential architecture. Indian Hill Club is another longstanding landmark in this part of the community.

“GregoryZ had our ancient AC compressor back up-and-running in an hour. He even arrived earlier than scheduled before it got really warm out. Great service.”

Mike D

Stay warm all winter long! Call Deljo at 773-829-4295 or schedule your heating service online today.

Plumbing Help for Winnetka Homeowners

pipe repair

A plumbing problem does not care whether you are headed to the Winnetka Music Festival, spending the afternoon near Centennial Park, or simply trying to get through the morning at home. When a drain, water heater, pipe, fixture, or sewer line needs attention, the priority is getting the system working correctly again.

Deljo provides plumbing services such as:

Water heater replacement, fixture upgrades, and drain service are all important parts of the Winnetka plumbing market. Larger projects can extend to repiping, sewer work, flood control, and other system improvements.

One address almost everyone associates with Winnetka is 671 Lincoln Avenue, better known as the “Home Alone” house. It remains a year-round attraction and draws particular attention around Christmas. It is one of several residential landmarks that make Winnetka recognizable well beyond the North Shore.

Facing a drain clog, water heater issue, or pipe repair? Call 773-829-4295 now for fast, expert plumbing service in Winnetka!

Whole-Home Air Quality & Comfort Controls in Winnetka

Larger Winnetka homes can create another challenge: getting the whole house to feel the way you want it to feel. Estate-scale properties make zoning and whole-home controls especially relevant because different levels or areas of a house may need more precise management.

Deljo can help with:

A heating and cooling technician uses a device to measure how efficiently a furnace is running.
Filtration, purification, humidity control, thermostats, and zoning give homeowners options beyond replacing the furnace or AC unit alone. These systems can be considered together when the goal is better control across the entire property.

That whole-home approach is particularly relevant in areas such as Indian Hill, where large residential properties are part of the neighborhood character.

“Donny from Deljo did a great job. He was efficient and knowledgeable and kept me in the loop.”

Tarek H

Improve your Winnetka home comfort and indoor air quality. Call 773-829-4295 or contact us online to schedule service.

Life Around Winnetka Extends Well Beyond the House

Service calls take us into the residential side of Winnetka, but the community has plenty of recognizable activity outside those neighborhoods.

The Winnetka Music Festival turns the downtown area into a two-day summer concert destination and draws approximately 5,500 people, primarily from Winnetka and nearby North Shore communities. Hubbard Woods hosts merchant programming, and the Winnetka Park District offers activities throughout the year.

Centennial Park gives residents access to the lakefront, while Crow Island Elementary School represents another side of the village’s architectural history. Together with Indian Hill, Hubbard Woods, East Winnetka, and West Winnetka, these places give different sections of 60093 their own identity.

Need HVAC or Plumbing Service in Winnetka?

You may be calling about an old boiler, an AC system that suddenly stopped working, a plumbing repair, or a house where one thermostat is no longer giving you the control you want. The address might be near Hubbard Woods, Indian Hill, Centennial Park, or somewhere between the lakefront and Winnetka’s western edge.

“Gabe was wonderful! I called them when my tenants AC went out during the heat wave, and they were able to get over and get everything sorted extremely quickly. He was very thorough and told me everything that was going on even though I was not physically there. Really appreciate the great work!”

Laura S

What matters first is understanding what is happening in your home and giving you a clear way forward. Call Deljo Heating, Cooling & Plumbing at 773-829-4295 or contact us online for heating, cooling, plumbing, or indoor air quality service in Winnetka.

Frequently Asked Questions

What heating systems does Deljo service in Winnetka?

A: Deljo handles boiler service, furnace repair, furnace installation, heating maintenance, heat pump service, and heating system replacement in Winnetka.

Are boilers and steam heat common in Winnetka?

A: Boilers and steam heat remain a meaningful part of the Winnetka service picture. More than half of the village’s housing was built before 1939, and more than 75% predates 1970. Older estate homes, including properties around Indian Hill and West Winnetka, are among the places where these systems remain especially relevant.

What plumbing services does Deljo provide in Winnetka?

A: Deljo provides emergency plumbing, drain cleaning, water heaters, whole-home water filters, pipe repair, frozen pipe service, flood control, sump pumps, plumbing fixtures, repiping, sewer lines, and showers and bathtubs.

Does Deljo provide AC repair and installation in Winnetka?

A: Yes. Deljo handles AC repair, AC installation, AC maintenance, heat pump service, and ductless AC in Winnetka. Central air conditioning is common throughout Winnetka’s single-family housing, while high-efficiency replacement is an option for homeowners ready to update older equipment.

What indoor air quality services are available in Winnetka?

A: Deljo can help with air duct cleaning, Aeroseal, indoor air quality inspection and testing, air filtration, purifying ionizers, air purifiers, whole-home humidifiers, whole-home dehumidifiers, thermostats, and AC coil and condenser cleaning.

Why can zoning be useful in larger Winnetka homes?

A: Estate-scale properties make zoning and whole-home controls especially relevant because different levels or areas of a house may need more precise management. Zoning and thermostat upgrades can add another level of control to the heating and cooling system itself.

What areas of Winnetka does Deljo serve?

A: Deljo works throughout 60093, including areas such as Hubbard Woods, Indian Hill, Centennial Park, East Winnetka, and West Winnetka.

Page Updated on September 19, 2026

Recent Jobs and Reviews in Winnetka, IL

Winnetka, IL at a glance

Deljo Heating, Cooling & Plumbing has completed 20 jobs in Winnetka, IL between May 2026 and June 2026.

The most recent job was on June 13, 2026.

Deljo Heating, Cooling & Plumbing has completed 98 jobs in Winnetka, IL in the last 12 months.

Job Locations and Reviews

Responded to a no cooling call and diagnosed a refrigerant leak at the air handler suction line copper fitting, evidenced by green oil staining. The leak location was easily accessible in the basement utility area. Documented the refrigerant leak with photos showing the affected copper piping and brass fittings at the air handler connection point.
Responded to a no cooling call and diagnosed a refrigerant leak at the air handler suction line copper fitting, evidenced by green oil staining. The leak location was easily accessible in the basement utility area. Documented the refrigerant leak with photos showing the affected copper piping and brass fittings at the air handler connection point.
Gerardo M.
Gerardo M. Checked in
Responded to a no cooling call and diagnosed a refrigerant leak at the air handler suction line copper fitting, evidenced by green oil staining. The leak location was easily accessible in the basement utility area. Documented the refrigerant leak with photos showing the affected copper piping and brass fittings at the air handler connection point.
Winnetka, IL 60093
Performed comprehensive HVAC system evaluation on second floor left unit. Diagnosed low refrigerant levels in AC condenser and identified failed electrical components requiring complete electrical rebuild of condenser unit. Assessed aging furnace system determined to be over 10 years old and nearing end of serviceable life. Documented interior components and system conditions through detailed photography for estimate preparation. Scheduled follow-up installation appointment for full system replacement to address multiple component failures and aging equipment.
Performed comprehensive HVAC system evaluation on second floor left unit. Diagnosed low refrigerant levels in AC condenser and identified failed electrical components requiring complete electrical rebuild of condenser unit. Assessed aging furnace system determined to be over 10 years old and nearing end of serviceable life. Documented interior components and system conditions through detailed photography for estimate preparation. Scheduled follow-up installation appointment for full system replacement to address multiple component failures and aging equipment.
Michael C.
Michael C. Checked in
Performed comprehensive HVAC system evaluation on second floor left unit. Diagnosed low refrigerant levels in AC condenser and identified failed electrical components requiring complete electrical rebuild of condenser unit. Assessed aging furnace system determined to be over 10 years old and nearing end of serviceable life. Documented interior components and system conditions through detailed photography for estimate preparation. Scheduled follow-up installation appointment for full system replacement to address multiple component failures and aging equipment.
Winnetka, IL 60093
# HVAC Service Call - No Cool, Dual System

Responded to service call for two non-operational air conditioning systems. Upon arrival, performed diagnostic evaluation of outdoor condenser units and indoor thermostat controls. Primary unit inspected showed aged condenser positioned on concrete pad with visible debris accumulation at base. Refrigerant lines and electrical connections evaluated for integrity. Indoor thermostat displayed 81°F ambient temperature with setpoint at 70°F in cooling mode with auto fan setting, confirming lack of cooling operation.

Conducted comprehensive system assessment including electrical supply verification, contactor operation testing, and capacitor evaluation. Both systems exhibited failure to initiate due to age-related component degradation typical of units exceeding 10-year service life. Documented equipment condition through photographic records showing outdoor unit configuration, mounting, and thermostat interface for service history.

Provided cust
# HVAC Service Call - No Cool, Dual System

Responded to service call for two non-operational air conditioning systems. Upon arrival, performed diagnostic evaluation of outdoor condenser units and indoor thermostat controls. Primary unit inspected showed aged condenser positioned on concrete pad with visible debris accumulation at base. Refrigerant lines and electrical connections evaluated for integrity. Indoor thermostat displayed 81°F ambient temperature with setpoint at 70°F in cooling mode with auto fan setting, confirming lack of cooling operation.

Conducted comprehensive system assessment including electrical supply verification, contactor operation testing, and capacitor evaluation. Both systems exhibited failure to initiate due to age-related component degradation typical of units exceeding 10-year service life. Documented equipment condition through photographic records showing outdoor unit configuration, mounting, and thermostat interface for service history.

Provided cust
Sal C.
Sal C. Checked in
# HVAC Service Call - No Cool, Dual System Responded to service call for two non-operational air conditioning systems. Upon arrival, performed diagnostic evaluation of outdoor condenser units and indoor thermostat controls. Primary unit inspected showed aged condenser positioned on concrete pad with visible debris accumulation at base. Refrigerant lines and electrical connections evaluated for integrity. Indoor thermostat displayed 81°F ambient temperature with setpoint at 70°F in cooling mode with auto fan setting, confirming lack of cooling operation. Conducted comprehensive system assessment including electrical supply verification, contactor operation testing, and capacitor evaluation. Both systems exhibited failure to initiate due to age-related component degradation typical of units exceeding 10-year service life. Documented equipment condition through photographic records showing outdoor unit configuration, mounting, and thermostat interface for service history. Provided cust
Winnetka, IL 60093
Performed preventative maintenance on three outdoor condenser units and three electronic air cleaners as part of scheduled agreement service. Conducted thorough coil washing on all three condensers to remove accumulated dirt, debris, and organic material that can restrict airflow and reduce system efficiency. Cleaned and serviced electronic air cleaner components, including blower wheels and internal surfaces, to ensure optimal indoor air quality performance. All equipment was inspected during service and found to be operating within normal parameters following maintenance completion.
Performed preventative maintenance on three outdoor condenser units and three electronic air cleaners as part of scheduled agreement service. Conducted thorough coil washing on all three condensers to remove accumulated dirt, debris, and organic material that can restrict airflow and reduce system efficiency. Cleaned and serviced electronic air cleaner components, including blower wheels and internal surfaces, to ensure optimal indoor air quality performance. All equipment was inspected during service and found to be operating within normal parameters following maintenance completion.
Sam A.
Sam A. Checked in
Performed preventative maintenance on three outdoor condenser units and three electronic air cleaners as part of scheduled agreement service. Conducted thorough coil washing on all three condensers to remove accumulated dirt, debris, and organic material that can restrict airflow and reduce system efficiency. Cleaned and serviced electronic air cleaner components, including blower wheels and internal surfaces, to ensure optimal indoor air quality performance. All equipment was inspected during service and found to be operating within normal parameters following maintenance completion.
Winnetka, IL 60093
# HVAC Service Call - No Cooling Issue with Zoning Problem

Responded to service call for air conditioning system less than 5 years old experiencing no cooling in one zone and clicking noise upon startup. Upon arrival, conducted visual inspection of thermostat controls and system operation.

Examined Honeywell Home ProSeries thermostat displaying abnormal reading of 99 degrees in heat mode despite cooling season. Verified thermostat wiring connections at wall plate and confirmed proper mounting. Assessed zone control functionality and damper operation for affected area of residence.

Investigated clicking sound reported during system startup by monitoring compressor contactor, relay switches, and capacitor operation. Checked for debris in outdoor unit and inspected fan motor bearings. Evaluated refrigerant pressures and airflow through supply registers in non-cooling zone.

Identified thermostat configuration error causing improper system mode and potential zone damper malfunction rest
# HVAC Service Call - No Cooling Issue with Zoning Problem

Responded to service call for air conditioning system less than 5 years old experiencing no cooling in one zone and clicking noise upon startup. Upon arrival, conducted visual inspection of thermostat controls and system operation.

Examined Honeywell Home ProSeries thermostat displaying abnormal reading of 99 degrees in heat mode despite cooling season. Verified thermostat wiring connections at wall plate and confirmed proper mounting. Assessed zone control functionality and damper operation for affected area of residence.

Investigated clicking sound reported during system startup by monitoring compressor contactor, relay switches, and capacitor operation. Checked for debris in outdoor unit and inspected fan motor bearings. Evaluated refrigerant pressures and airflow through supply registers in non-cooling zone.

Identified thermostat configuration error causing improper system mode and potential zone damper malfunction rest
Sal C.
Sal C. Checked in
# HVAC Service Call - No Cooling Issue with Zoning Problem Responded to service call for air conditioning system less than 5 years old experiencing no cooling in one zone and clicking noise upon startup. Upon arrival, conducted visual inspection of thermostat controls and system operation. Examined Honeywell Home ProSeries thermostat displaying abnormal reading of 99 degrees in heat mode despite cooling season. Verified thermostat wiring connections at wall plate and confirmed proper mounting. Assessed zone control functionality and damper operation for affected area of residence. Investigated clicking sound reported during system startup by monitoring compressor contactor, relay switches, and capacitor operation. Checked for debris in outdoor unit and inspected fan motor bearings. Evaluated refrigerant pressures and airflow through supply registers in non-cooling zone. Identified thermostat configuration error causing improper system mode and potential zone damper malfunction rest
Winnetka, IL 60093
Performed routine maintenance inspection on residential HVAC system under preventative maintenance agreement. Inspected outdoor condensing unit, verified proper operation of fan assembly and blower wheel, checked refrigerant lines and electrical connections, and documented system condition with photographs. All components found to be in satisfactory working order with no immediate service needs identified.
Performed routine maintenance inspection on residential HVAC system under preventative maintenance agreement. Inspected outdoor condensing unit, verified proper operation of fan assembly and blower wheel, checked refrigerant lines and electrical connections, and documented system condition with photographs. All components found to be in satisfactory working order with no immediate service needs identified.
Angel G.
Angel G. Checked in
Performed routine maintenance inspection on residential HVAC system under preventative maintenance agreement. Inspected outdoor condensing unit, verified proper operation of fan assembly and blower wheel, checked refrigerant lines and electrical connections, and documented system condition with photographs. All components found to be in satisfactory working order with no immediate service needs identified.
Winnetka, IL 60093
Responded to service call for newly installed AC unit not turning on. Upon arrival, performed electrical diagnostics using clamp meter at outdoor condenser unit. Measured current draw of 568 units and inspected line voltage wiring connections at service disconnect. Verified proper electrical supply to condenser, checked all wire terminations, and ensured unit received adequate power. System restored to operational status with compressor and condenser fan functioning properly.
Responded to service call for newly installed AC unit not turning on. Upon arrival, performed electrical diagnostics using clamp meter at outdoor condenser unit. Measured current draw of 568 units and inspected line voltage wiring connections at service disconnect. Verified proper electrical supply to condenser, checked all wire terminations, and ensured unit received adequate power. System restored to operational status with compressor and condenser fan functioning properly.
Matt B.
Matt B. Checked in
Responded to service call for newly installed AC unit not turning on. Upon arrival, performed electrical diagnostics using clamp meter at outdoor condenser unit. Measured current draw of 568 units and inspected line voltage wiring connections at service disconnect. Verified proper electrical supply to condenser, checked all wire terminations, and ensured unit received adequate power. System restored to operational status with compressor and condenser fan functioning properly.
Winnetka, IL 60093
Responded to no cooling complaint on residential AC unit installed in June 2019. Upon inspection, found evaporator coil heavily contaminated with dust, debris, and organic material lodged between fins, severely restricting airflow and heat transfer capability. Cleaned evaporator coil thoroughly to restore proper airflow and system efficiency. Inspected exterior condensate drain connections and plumbing components, which showed normal weathering but remained functional. Verified unit is covered under 10-year parts warranty through Carrier and 10-year labor warranty contingent upon continued annual maintenance. System restored to proper cooling operation.
Responded to no cooling complaint on residential AC unit installed in June 2019. Upon inspection, found evaporator coil heavily contaminated with dust, debris, and organic material lodged between fins, severely restricting airflow and heat transfer capability. Cleaned evaporator coil thoroughly to restore proper airflow and system efficiency. Inspected exterior condensate drain connections and plumbing components, which showed normal weathering but remained functional. Verified unit is covered under 10-year parts warranty through Carrier and 10-year labor warranty contingent upon continued annual maintenance. System restored to proper cooling operation.
Joe A.
Joe A. Checked in
Responded to no cooling complaint on residential AC unit installed in June 2019. Upon inspection, found evaporator coil heavily contaminated with dust, debris, and organic material lodged between fins, severely restricting airflow and heat transfer capability. Cleaned evaporator coil thoroughly to restore proper airflow and system efficiency. Inspected exterior condensate drain connections and plumbing components, which showed normal weathering but remained functional. Verified unit is covered under 10-year parts warranty through Carrier and 10-year labor warranty contingent upon continued annual maintenance. System restored to proper cooling operation.
Winnetka, IL 60093
Responded to no cooling complaint on residential HVAC system. Upon arrival, customer was out of town and unit had been non-operational for multiple days per thermostat app notification. Inspected outdoor condensing unit and found failed dual run capacitor with visible aging, discoloration, and compromised wire connections. Replaced defective capacitor and verified proper electrical connections to compressor and condenser fan motor. Additionally inspected indoor air handler and found heavily soiled air filter restricting airflow, which contributed to system inefficiency and potential premature component failure. Replaced dirty filter with new pleated media filter to restore proper airflow. Cycled system through complete cooling operation and confirmed compressor startup, condenser fan operation, and adequate airflow at registers. System now cooling properly and operating within normal parameters.
Responded to no cooling complaint on residential HVAC system. Upon arrival, customer was out of town and unit had been non-operational for multiple days per thermostat app notification. Inspected outdoor condensing unit and found failed dual run capacitor with visible aging, discoloration, and compromised wire connections. Replaced defective capacitor and verified proper electrical connections to compressor and condenser fan motor. Additionally inspected indoor air handler and found heavily soiled air filter restricting airflow, which contributed to system inefficiency and potential premature component failure. Replaced dirty filter with new pleated media filter to restore proper airflow. Cycled system through complete cooling operation and confirmed compressor startup, condenser fan operation, and adequate airflow at registers. System now cooling properly and operating within normal parameters.
Gerardo M.
Gerardo M. Checked in
Responded to no cooling complaint on residential HVAC system. Upon arrival, customer was out of town and unit had been non-operational for multiple days per thermostat app notification. Inspected outdoor condensing unit and found failed dual run capacitor with visible aging, discoloration, and compromised wire connections. Replaced defective capacitor and verified proper electrical connections to compressor and condenser fan motor. Additionally inspected indoor air handler and found heavily soiled air filter restricting airflow, which contributed to system inefficiency and potential premature component failure. Replaced dirty filter with new pleated media filter to restore proper airflow. Cycled system through complete cooling operation and confirmed compressor startup, condenser fan operation, and adequate airflow at registers. System now cooling properly and operating within normal parameters.
Winnetka, IL 60093
Successfully completed full air conditioning system replacement including outdoor condensing unit and indoor evaporator coil. Removed existing equipment and installed new AC unit on concrete pad with proper refrigerant line connections and electrical conduit. System commissioned and verified operating at 69°F supply air temperature, confirming proper cooling performance.
Successfully completed full air conditioning system replacement including outdoor condensing unit and indoor evaporator coil. Removed existing equipment and installed new AC unit on concrete pad with proper refrigerant line connections and electrical conduit. System commissioned and verified operating at 69°F supply air temperature, confirming proper cooling performance.
Sean W.
Sean W. Checked in
Successfully completed full air conditioning system replacement including outdoor condensing unit and indoor evaporator coil. Removed existing equipment and installed new AC unit on concrete pad with proper refrigerant line connections and electrical conduit. System commissioned and verified operating at 69°F supply air temperature, confirming proper cooling performance.
Winnetka, IL 60093
Performed return visit to complete cleaning of two blower assemblies as part of catch-up on the week's scheduled maintenance work. Both squirrel cage blower wheels showed significant dust accumulation on the vertical fins and required thorough cleaning to restore proper airflow and system efficiency. Disassembled blower housings, removed debris from centrifugal fan blades, cleaned gasket seals, and reassembled units to manufacturer specifications.
Performed return visit to complete cleaning of two blower assemblies as part of catch-up on the week's scheduled maintenance work. Both squirrel cage blower wheels showed significant dust accumulation on the vertical fins and required thorough cleaning to restore proper airflow and system efficiency. Disassembled blower housings, removed debris from centrifugal fan blades, cleaned gasket seals, and reassembled units to manufacturer specifications.
Sam A.
Sam A. Checked in
Performed return visit to complete cleaning of two blower assemblies as part of catch-up on the week's scheduled maintenance work. Both squirrel cage blower wheels showed significant dust accumulation on the vertical fins and required thorough cleaning to restore proper airflow and system efficiency. Disassembled blower housings, removed debris from centrifugal fan blades, cleaned gasket seals, and reassembled units to manufacturer specifications.
Winnetka, IL 60093
Provided comprehensive estimate for complete SpacePak high-velocity HVAC system replacement. Evaluated existing equipment including outdoor condenser unit and indoor Honeywell Home digital thermostat, documented current system configuration and measurements, and presented full replacement options to customer for new high-velocity air conditioning and heating system installation.
Provided comprehensive estimate for complete SpacePak high-velocity HVAC system replacement. Evaluated existing equipment including outdoor condenser unit and indoor Honeywell Home digital thermostat, documented current system configuration and measurements, and presented full replacement options to customer for new high-velocity air conditioning and heating system installation.
Tyler B.
Tyler B. Checked in
Provided comprehensive estimate for complete SpacePak high-velocity HVAC system replacement. Evaluated existing equipment including outdoor condenser unit and indoor Honeywell Home digital thermostat, documented current system configuration and measurements, and presented full replacement options to customer for new high-velocity air conditioning and heating system installation.
Winnetka, IL 60093
Conducted comprehensive HVAC estimate for replacement of 18-year-old residential air conditioning system. Evaluated existing York brand furnace and air handler configuration in basement utility room, documenting current ductwork connections, refrigerant lines, electrical components, and condensate drainage system. Photographed equipment dimensions and existing infrastructure to determine replacement unit specifications and installation requirements for complete system upgrade.
Conducted comprehensive HVAC estimate for replacement of 18-year-old residential air conditioning system. Evaluated existing York brand furnace and air handler configuration in basement utility room, documenting current ductwork connections, refrigerant lines, electrical components, and condensate drainage system. Photographed equipment dimensions and existing infrastructure to determine replacement unit specifications and installation requirements for complete system upgrade.
Tyler B.
Tyler B. Checked in
Conducted comprehensive HVAC estimate for replacement of 18-year-old residential air conditioning system. Evaluated existing York brand furnace and air handler configuration in basement utility room, documenting current ductwork connections, refrigerant lines, electrical components, and condensate drainage system. Photographed equipment dimensions and existing infrastructure to determine replacement unit specifications and installation requirements for complete system upgrade.
Winnetka, IL 60093
Responded to senior tech request for non-operational air conditioning system with condenser failure. Upon arrival, verified thermostat was calling for cooling with setpoint at 61°F while indoor temperature registered 67°F in heating mode, indicating system was not responding to cooling demand. Performed diagnostic evaluation of outdoor condenser unit and identified electrical or mechanical failure preventing compressor and condenser fan operation, resulting in complete loss of cooling capacity.
Responded to senior tech request for non-operational air conditioning system with condenser failure. Upon arrival, verified thermostat was calling for cooling with setpoint at 61°F while indoor temperature registered 67°F in heating mode, indicating system was not responding to cooling demand. Performed diagnostic evaluation of outdoor condenser unit and identified electrical or mechanical failure preventing compressor and condenser fan operation, resulting in complete loss of cooling capacity.
Sam A.
Sam A. Checked in
Responded to senior tech request for non-operational air conditioning system with condenser failure. Upon arrival, verified thermostat was calling for cooling with setpoint at 61°F while indoor temperature registered 67°F in heating mode, indicating system was not responding to cooling demand. Performed diagnostic evaluation of outdoor condenser unit and identified electrical or mechanical failure preventing compressor and condenser fan operation, resulting in complete loss of cooling capacity.
Winnetka, IL 60093
Responded to no cooling complaint on residential Carrier air conditioning system. Upon arrival, performed system diagnostics and temperature measurements. Recorded supply air temperature of 41.3°F at the ductwork, indicating proper cooling operation. Inspected outdoor condensing units and confirmed both Carrier systems were operational with no visible defects or mechanical issues. System found to be cooling adequately within normal operating parameters at time of service call.
Responded to no cooling complaint on residential Carrier air conditioning system. Upon arrival, performed system diagnostics and temperature measurements. Recorded supply air temperature of 41.3°F at the ductwork, indicating proper cooling operation. Inspected outdoor condensing units and confirmed both Carrier systems were operational with no visible defects or mechanical issues. System found to be cooling adequately within normal operating parameters at time of service call.
Gabe G.
Gabe G. Checked in
Responded to no cooling complaint on residential Carrier air conditioning system. Upon arrival, performed system diagnostics and temperature measurements. Recorded supply air temperature of 41.3°F at the ductwork, indicating proper cooling operation. Inspected outdoor condensing units and confirmed both Carrier systems were operational with no visible defects or mechanical issues. System found to be cooling adequately within normal operating parameters at time of service call.
Winnetka, IL 60093
Responded to no cooling call. Upon arrival, found unit shut down due to tripped water sensor safety switch. Customer had attempted to reset the sensor without success. Inspected condensate drain system and confirmed water presence triggering the safety device. Cleared condensate line blockage, verified proper drainage, and successfully reset water sensor switch. Tested system operation with thermostat set to cooling mode at 78 degrees, confirmed unit cycling properly with fan operation normal. System restored to full cooling function.
Responded to no cooling call. Upon arrival, found unit shut down due to tripped water sensor safety switch. Customer had attempted to reset the sensor without success. Inspected condensate drain system and confirmed water presence triggering the safety device. Cleared condensate line blockage, verified proper drainage, and successfully reset water sensor switch. Tested system operation with thermostat set to cooling mode at 78 degrees, confirmed unit cycling properly with fan operation normal. System restored to full cooling function.
Charlie B.
Charlie B. Checked in
Responded to no cooling call. Upon arrival, found unit shut down due to tripped water sensor safety switch. Customer had attempted to reset the sensor without success. Inspected condensate drain system and confirmed water presence triggering the safety device. Cleared condensate line blockage, verified proper drainage, and successfully reset water sensor switch. Tested system operation with thermostat set to cooling mode at 78 degrees, confirmed unit cycling properly with fan operation normal. System restored to full cooling function.
Winnetka, IL 60093
Responded to service call for Carrier HVAC system experiencing multiple fault alerts. Upon arrival, accessed system diagnostics through thermostat control panel and documented recurring error codes including excessive static pressure (210 fault - 25 consecutive occurrences), possible frozen coil conditions (multiple instances), and humidity sensor fault (160 fault - 3 consecutive times). Photographed system event log showing fault history spanning multiple weeks. System requires follow-up evaluation during warmer weather conditions to properly assess airflow restrictions, coil freezing issues, and static pressure concerns when system is under normal cooling load. Consulted with supervisors on-site regarding diagnostic findings and recommended service plan. Initial assessment completed; system monitoring ongoing pending seasonal temperature increase for comprehensive evaluation and repair.
Responded to service call for Carrier HVAC system experiencing multiple fault alerts. Upon arrival, accessed system diagnostics through thermostat control panel and documented recurring error codes including excessive static pressure (210 fault - 25 consecutive occurrences), possible frozen coil conditions (multiple instances), and humidity sensor fault (160 fault - 3 consecutive times). Photographed system event log showing fault history spanning multiple weeks. System requires follow-up evaluation during warmer weather conditions to properly assess airflow restrictions, coil freezing issues, and static pressure concerns when system is under normal cooling load. Consulted with supervisors on-site regarding diagnostic findings and recommended service plan. Initial assessment completed; system monitoring ongoing pending seasonal temperature increase for comprehensive evaluation and repair.
Gabe G.
Gabe G. Checked in
Responded to service call for Carrier HVAC system experiencing multiple fault alerts. Upon arrival, accessed system diagnostics through thermostat control panel and documented recurring error codes including excessive static pressure (210 fault - 25 consecutive occurrences), possible frozen coil conditions (multiple instances), and humidity sensor fault (160 fault - 3 consecutive times). Photographed system event log showing fault history spanning multiple weeks. System requires follow-up evaluation during warmer weather conditions to properly assess airflow restrictions, coil freezing issues, and static pressure concerns when system is under normal cooling load. Consulted with supervisors on-site regarding diagnostic findings and recommended service plan. Initial assessment completed; system monitoring ongoing pending seasonal temperature increase for comprehensive evaluation and repair.
Winnetka, IL 60093
Responded to no cooling complaint on upper-level air conditioning system. Upon inspection, measured supply air temperature at 79.2°F, confirming inadequate cooling performance. Diagnosed system issue and completed necessary repairs to restore proper cooling operation to the upstairs zone, with outdoor condensing units operating normally upon completion.
Responded to no cooling complaint on upper-level air conditioning system. Upon inspection, measured supply air temperature at 79.2°F, confirming inadequate cooling performance. Diagnosed system issue and completed necessary repairs to restore proper cooling operation to the upstairs zone, with outdoor condensing units operating normally upon completion.
Matt B.
Matt B. Checked in
Responded to no cooling complaint on upper-level air conditioning system. Upon inspection, measured supply air temperature at 79.2°F, confirming inadequate cooling performance. Diagnosed system issue and completed necessary repairs to restore proper cooling operation to the upstairs zone, with outdoor condensing units operating normally upon completion.
Winnetka, IL 60093
Completed maintenance agreement service on residential HVAC system including two condenser units and furnace inspection. Verified system temperatures reading 72.6°F, replaced 16x25x1 air filter, and inspected all ductwork connections and PVC condensate lines for proper operation. All equipment functioning within normal parameters upon completion.
Completed maintenance agreement service on residential HVAC system including two condenser units and furnace inspection. Verified system temperatures reading 72.6°F, replaced 16x25x1 air filter, and inspected all ductwork connections and PVC condensate lines for proper operation. All equipment functioning within normal parameters upon completion.
Angel C.
Angel C. Checked in
Completed maintenance agreement service on residential HVAC system including two condenser units and furnace inspection. Verified system temperatures reading 72.6°F, replaced 16x25x1 air filter, and inspected all ductwork connections and PVC condensate lines for proper operation. All equipment functioning within normal parameters upon completion.
Winnetka, IL 60093
Completed preventative maintenance agreement service on residential HVAC system with two condensers. Inspected furnace, air handler, ductwork, and associated mechanical equipment in utility room, verified all components operating within normal parameters. Replaced heavily soiled air filter with new unit to maintain proper airflow and system efficiency.
Completed preventative maintenance agreement service on residential HVAC system with two condensers. Inspected furnace, air handler, ductwork, and associated mechanical equipment in utility room, verified all components operating within normal parameters. Replaced heavily soiled air filter with new unit to maintain proper airflow and system efficiency.
Angel C.
Angel C. Checked in
Completed preventative maintenance agreement service on residential HVAC system with two condensers. Inspected furnace, air handler, ductwork, and associated mechanical equipment in utility room, verified all components operating within normal parameters. Replaced heavily soiled air filter with new unit to maintain proper airflow and system efficiency.
Winnetka, IL 60093

Client Testimonials

Read the opinions of our satisfied customers.

5 stars

This was my first time as a Deljo customer, and I was very pleased. My technician, Giovanni, was very thorough and diligent. He serviced my furnace and identified a faulty sensor that was causing the unit to shut itself down. Deljo ordered the part, and Giovanni replaced it a few days later. Overall, the team at Deljo was great. The dispatcher kept me informed about Giovanni’s arrival time, and the supervisor assisted Giovanni when he was diagnosing the problem with the furnace. I highly recommend Deljo.

Paul D. 10/15/2026

5 stars

I’ve used Deljo for over 10 years now and they always do a good job. Izzy was the technician for this visit and he did an excellent job with my winter maintenance on my multiple units in the household. He also addressed an issue while cleaning the furnace blower wheel. His communication was clear and concise with what he planned to do to address the issue quickly. He was confident and I had 0 concerns or questions. Great job Izzy!

Jeff S. 10/14/2026

5 stars

Paul was great! Arrived on time and completed maintenance on my humidifier, tankless water heater, and two furnaces. All work was performed under my Gold Star maintenance program, so all maintenance charges were covered. Paul did provide a few proposals for additional services on furnace & tankless water heater, but those were emailed to me for further consideration. Paul was friendly, knowledgeable, and answered all my questions.

Jack N. 10/12/2026

5 stars

Gabe did an excellent job with our annual service visit. He arrived in the early part of our service window, was friendly and knowledgeable, and got the work done in a very reasonable amount of time. I have great confidence in Deljo, and am a long-time customer.

Ruth C. 10/9/2026

5 stars

I’ve been using Deljo for 20 years for HVAC but now venture into enlisting their plumbing services. Bashar was very courteous, efficient & informative, and I’d definitely request him again for the next plumbing job. Great experience!

Christopher R. 10/2/2026

5 stars

Working with Deljo is always a good experience, and today’s appointment with Izzy was no different. He was able to come early which actually worked better with our schedules, but called me ahead of time to make sure that was okay. He was friendly and knowledgeable when he explained the work he had done during his visit and our options for fixes. He was also able to schedule a quote appointment for us while he was still here. We would highly recommend working with Izzy and the Deljo team!

Lauren H.  9/25/2026

5 stars

Drew performed the seasonal maintenance on my AC. It needed some repairs and updates and he was able to fix everything at the same appointment. He also noticed issues with the hot water heater and we were able to get ahead of that, as well.

Emily W. 9/11/2026

5 stars

I would leave six out of five stars if I could! My technician Jorge went above and beyond on his service. There was buildup in the rental property’s toilet from the previous tenant. One maintenance person did a surface level job of cleaning but did not fully remove the obstruction. Jorge went above and beyond and came to a solution and even explained the perpetual problems older toilet models can cause. Moving forward with this insight, I can perform my own upkeep the previous tenant did not. Thank you kindly!

Kayla K.  9/15/2026

5 stars

We just had our new boiler installed by Jonathan and Carlos. First rate work! They arrived on time, removed the old boiler, installed the new unit, and explained the features. Both guys were pleasant. Bring on the cold this winter! We are ready thanks to the team from Deljo.

Edward B.  6/26/2026

5 stars

Deljo’s heating and cooling team was awesome to work with. As a first-time homeowner, I really appreciated how clearly they explained everything and answered all my questions. From the quote to the install and follow-up, the service was top-notch. Highly recommend!

Lindsey A. Chicago, IL

5 stars

Matt did an amazing job. He serviced our home and our rental property. He gave us options to help our systems run more efficiently. He also told us about Deljo’s new plumbing inspection which was very affordable. He is great!

Jordan R. Chicago, IL

5 stars

We had a problem with our Humidifier and called Deljo. Jesus came out to help and was amazing. He was extremely knowledgeable, detail oriented, and super courteous. Amazing customer experience!

Jeff C. Chicago, IL

5 stars

Jordan and Jesus were extremely helpful and knowledgeable! We would 100% work with them and have them back. They were both very professional and efficiently fixed our heating system.

Emily L. Chicago, IL

5 stars

Shout out to Ernesto for coming out and servicing our furnace and air con. Deljo provides a great service and glad to trust them with our HVAC for our small business.

Lauren H. Chicago, IL

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