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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 August 2026 and September 2026.

The most recent job was on September 24, 2026.

Job Locations and Reviews

Performed comprehensive maintenance on two Navien tankless water heaters and one conventional storage water heater under agreement terms. Inspected heating elements, electrical connections, and terminal blocks for proper operation and signs of wear. Verified digital control panel functionality on tankless units, confirming accurate temperature readings at 94°F and proper display operation. Documented equipment condition with photos showing component integrity and Energy Star certified unit performance. All systems operating within normal parameters.
Performed comprehensive maintenance on two Navien tankless water heaters and one conventional storage water heater under agreement terms. Inspected heating elements, electrical connections, and terminal blocks for proper operation and signs of wear. Verified digital control panel functionality on tankless units, confirming accurate temperature readings at 94°F and proper display operation. Documented equipment condition with photos showing component integrity and Energy Star certified unit performance. All systems operating within normal parameters.
Alan M.
Alan M. Checked in
Performed comprehensive maintenance on two Navien tankless water heaters and one conventional storage water heater under agreement terms. Inspected heating elements, electrical connections, and terminal blocks for proper operation and signs of wear. Verified digital control panel functionality on tankless units, confirming accurate temperature readings at 94°F and proper display operation. Documented equipment condition with photos showing component integrity and Energy Star certified unit performance. All systems operating within normal parameters.
Winnetka, IL 60093
Completed comprehensive maintenance inspection on residential boiler system under maintenance agreement. Inspected circulator pump operation, verified proper function of all zone valves, and examined copper and PVC piping connections for leaks or deterioration. Checked condensate drainage system, inspected internal components including blower motor assembly and electrical connections, and documented system condition with photographic evidence. All components found operating within normal parameters with no immediate service needs identified.
Completed comprehensive maintenance inspection on residential boiler system under maintenance agreement. Inspected circulator pump operation, verified proper function of all zone valves, and examined copper and PVC piping connections for leaks or deterioration. Checked condensate drainage system, inspected internal components including blower motor assembly and electrical connections, and documented system condition with photographic evidence. All components found operating within normal parameters with no immediate service needs identified.
Jay L.
Jay L. Checked in
Completed comprehensive maintenance inspection on residential boiler system under maintenance agreement. Inspected circulator pump operation, verified proper function of all zone valves, and examined copper and PVC piping connections for leaks or deterioration. Checked condensate drainage system, inspected internal components including blower motor assembly and electrical connections, and documented system condition with photographic evidence. All components found operating within normal parameters with no immediate service needs identified.
Winnetka, IL 60093
Provided comprehensive estimate for complete replacement of two full HVAC systems serving multi-zone residential property. Existing equipment has exceeded 15-year service life and requires full system changeout. Site assessment documented current configuration of four outdoor condenser units positioned along exterior wall with gravel pad installation, existing electrical disconnects, and refrigerant line routing between mechanical units showing signs of age and weathering.
Provided comprehensive estimate for complete replacement of two full HVAC systems serving multi-zone residential property. Existing equipment has exceeded 15-year service life and requires full system changeout. Site assessment documented current configuration of four outdoor condenser units positioned along exterior wall with gravel pad installation, existing electrical disconnects, and refrigerant line routing between mechanical units showing signs of age and weathering.
Jim C.
Jim C. Checked in
Provided comprehensive estimate for complete replacement of two full HVAC systems serving multi-zone residential property. Existing equipment has exceeded 15-year service life and requires full system changeout. Site assessment documented current configuration of four outdoor condenser units positioned along exterior wall with gravel pad installation, existing electrical disconnects, and refrigerant line routing between mechanical units showing signs of age and weathering.
Winnetka, IL 60093
Responded to multiple system issues including tankless water heater error code 600061-01 (abnormal dual venturi) with intermittent hot water loss, and insufficient cooling on third and fourth floor zones. Inspected HVAC system components including Carrier humidifier installation on main ductwork and blower motor assembly. Removed and examined blower motor housing showing significant dust accumulation on squirrel cage fan and motor components. Documented system conditions with photographs for service records. Addressed ventilation concerns and assessed airflow distribution throughout multi-floor system to diagnose temperature control issues in upper zones.
Responded to multiple system issues including tankless water heater error code 600061-01 (abnormal dual venturi) with intermittent hot water loss, and insufficient cooling on third and fourth floor zones. Inspected HVAC system components including Carrier humidifier installation on main ductwork and blower motor assembly. Removed and examined blower motor housing showing significant dust accumulation on squirrel cage fan and motor components. Documented system conditions with photographs for service records. Addressed ventilation concerns and assessed airflow distribution throughout multi-floor system to diagnose temperature control issues in upper zones.
Gerardo M.
Gerardo M. Checked in
Responded to multiple system issues including tankless water heater error code 600061-01 (abnormal dual venturi) with intermittent hot water loss, and insufficient cooling on third and fourth floor zones. Inspected HVAC system components including Carrier humidifier installation on main ductwork and blower motor assembly. Removed and examined blower motor housing showing significant dust accumulation on squirrel cage fan and motor components. Documented system conditions with photographs for service records. Addressed ventilation concerns and assessed airflow distribution throughout multi-floor system to diagnose temperature control issues in upper zones.
Winnetka, IL 60093
Responded to no-heat call on recently installed boiler system. Upon arrival, inspected boiler unit, associated piping network, and control systems. Diagnosed ignition failure, performed troubleshooting procedures on burner assembly and control board, verified gas supply and pressure readings, and restored unit to proper operation with successful ignition and heating cycle confirmed.
Responded to no-heat call on recently installed boiler system. Upon arrival, inspected boiler unit, associated piping network, and control systems. Diagnosed ignition failure, performed troubleshooting procedures on burner assembly and control board, verified gas supply and pressure readings, and restored unit to proper operation with successful ignition and heating cycle confirmed.
Sam A.
Sam A. Checked in
Responded to no-heat call on recently installed boiler system. Upon arrival, inspected boiler unit, associated piping network, and control systems. Diagnosed ignition failure, performed troubleshooting procedures on burner assembly and control board, verified gas supply and pressure readings, and restored unit to proper operation with successful ignition and heating cycle confirmed.
Winnetka, IL 60093
Responded to no cooling call on air conditioning system less than 10 years old. Upon inspection, discovered blown fuse in low voltage control circuit. Replaced defective fuse with proper replacement, restored power to system, and verified unit returned to normal cooling operation.
Responded to no cooling call on air conditioning system less than 10 years old. Upon inspection, discovered blown fuse in low voltage control circuit. Replaced defective fuse with proper replacement, restored power to system, and verified unit returned to normal cooling operation.
Drew W.
Drew W. Checked in
Responded to no cooling call on air conditioning system less than 10 years old. Upon inspection, discovered blown fuse in low voltage control circuit. Replaced defective fuse with proper replacement, restored power to system, and verified unit returned to normal cooling operation.
Winnetka, IL 60093
Responded to no cooling call and investigated reported leak from kitchen duct. Upon inspection, found moisture issue in mechanical room affecting ductwork, with drywall already opened by previous plumber. Documented existing plumbing and HVAC infrastructure, including water heater, copper piping with brass fittings, and horizontal duct runs. Measured duct components and assessed system layout to determine source of leak and provide estimate for circulating pump replacement as requested by customer.
Responded to no cooling call and investigated reported leak from kitchen duct. Upon inspection, found moisture issue in mechanical room affecting ductwork, with drywall already opened by previous plumber. Documented existing plumbing and HVAC infrastructure, including water heater, copper piping with brass fittings, and horizontal duct runs. Measured duct components and assessed system layout to determine source of leak and provide estimate for circulating pump replacement as requested by customer.
Sam A.
Sam A. Checked in
Responded to no cooling call and investigated reported leak from kitchen duct. Upon inspection, found moisture issue in mechanical room affecting ductwork, with drywall already opened by previous plumber. Documented existing plumbing and HVAC infrastructure, including water heater, copper piping with brass fittings, and horizontal duct runs. Measured duct components and assessed system layout to determine source of leak and provide estimate for circulating pump replacement as requested by customer.
Winnetka, IL 60093
Completed comprehensive maintenance agreement service on dual HVAC system including two outdoor condensing units, two furnaces, and humidifier. Performed full system inspection and cleaning of both condensers positioned on exterior concrete pad, checking refrigerant levels, electrical connections, and contactor operation. Inspected and serviced both furnace blower assemblies, verifying proper airflow through centrifugal fan wheels and checking motor operation. Replaced two 16x25x1 air filters across both systems. Evaluated humidifier function and water supply connections. All equipment operational and running within manufacturer specifications upon completion.
Completed comprehensive maintenance agreement service on dual HVAC system including two outdoor condensing units, two furnaces, and humidifier. Performed full system inspection and cleaning of both condensers positioned on exterior concrete pad, checking refrigerant levels, electrical connections, and contactor operation. Inspected and serviced both furnace blower assemblies, verifying proper airflow through centrifugal fan wheels and checking motor operation. Replaced two 16x25x1 air filters across both systems. Evaluated humidifier function and water supply connections. All equipment operational and running within manufacturer specifications upon completion.
Gabe G.
Gabe G. Checked in
Completed comprehensive maintenance agreement service on dual HVAC system including two outdoor condensing units, two furnaces, and humidifier. Performed full system inspection and cleaning of both condensers positioned on exterior concrete pad, checking refrigerant levels, electrical connections, and contactor operation. Inspected and serviced both furnace blower assemblies, verifying proper airflow through centrifugal fan wheels and checking motor operation. Replaced two 16x25x1 air filters across both systems. Evaluated humidifier function and water supply connections. All equipment operational and running within manufacturer specifications upon completion.
Winnetka, IL 60093
Responded to callback for non-operational first floor AC and blank Nest thermostat following previous maintenance visit. Upon arrival, inspected thermostat and HVAC system, verified proper power supply restoration, and confirmed thermostat display was functioning correctly showing 71°F. Tested first floor AC operation and verified system cooling properly with no issues found related to prior service work.
Responded to callback for non-operational first floor AC and blank Nest thermostat following previous maintenance visit. Upon arrival, inspected thermostat and HVAC system, verified proper power supply restoration, and confirmed thermostat display was functioning correctly showing 71°F. Tested first floor AC operation and verified system cooling properly with no issues found related to prior service work.
Gregory Z.
Gregory Z. Checked in
Responded to callback for non-operational first floor AC and blank Nest thermostat following previous maintenance visit. Upon arrival, inspected thermostat and HVAC system, verified proper power supply restoration, and confirmed thermostat display was functioning correctly showing 71°F. Tested first floor AC operation and verified system cooling properly with no issues found related to prior service work.
Winnetka, IL 60093
Completed comprehensive cooling maintenance agreement service on three air conditioning systems with gas furnace included. Performed thorough inspection of Lennox furnace installation in basement utility area, checking all PVC venting connections, drainage lines, and electrical components. Accessed and inspected capacitor compartments on multiple AC units, verifying proper operation of run capacitors (including 10mfd blower capacitor), contactors, and all electrical connections. All wiring terminals were found secure with appropriate color-coded connections intact. Documented equipment conditions through photographic records for maintenance history. All systems operational and performing within manufacturer specifications upon completion of preventive maintenance inspection.
Completed comprehensive cooling maintenance agreement service on three air conditioning systems with gas furnace included. Performed thorough inspection of Lennox furnace installation in basement utility area, checking all PVC venting connections, drainage lines, and electrical components. Accessed and inspected capacitor compartments on multiple AC units, verifying proper operation of run capacitors (including 10mfd blower capacitor), contactors, and all electrical connections. All wiring terminals were found secure with appropriate color-coded connections intact. Documented equipment conditions through photographic records for maintenance history. All systems operational and performing within manufacturer specifications upon completion of preventive maintenance inspection.
Sam A.
Sam A. Checked in
Completed comprehensive cooling maintenance agreement service on three air conditioning systems with gas furnace included. Performed thorough inspection of Lennox furnace installation in basement utility area, checking all PVC venting connections, drainage lines, and electrical components. Accessed and inspected capacitor compartments on multiple AC units, verifying proper operation of run capacitors (including 10mfd blower capacitor), contactors, and all electrical connections. All wiring terminals were found secure with appropriate color-coded connections intact. Documented equipment conditions through photographic records for maintenance history. All systems operational and performing within manufacturer specifications upon completion of preventive maintenance inspection.
Winnetka, IL 60093
Completed comprehensive maintenance inspection on dual air conditioning systems under service agreement. Inspected attic-mounted HVAC ductwork, confirming flexible duct integrity and proper insulation installation with radiant barrier. Examined furnace heat exchanger and burner assembly, noting normal condensation patterns on heat exchanger surface and verifying proper burner operation. All accessible components photographed and found to be in satisfactory working condition. Filter size 16x25x4 not included per agreement terms.
Completed comprehensive maintenance inspection on dual air conditioning systems under service agreement. Inspected attic-mounted HVAC ductwork, confirming flexible duct integrity and proper insulation installation with radiant barrier. Examined furnace heat exchanger and burner assembly, noting normal condensation patterns on heat exchanger surface and verifying proper burner operation. All accessible components photographed and found to be in satisfactory working condition. Filter size 16x25x4 not included per agreement terms.
Angel G.
Angel G. Checked in
Completed comprehensive maintenance inspection on dual air conditioning systems under service agreement. Inspected attic-mounted HVAC ductwork, confirming flexible duct integrity and proper insulation installation with radiant barrier. Examined furnace heat exchanger and burner assembly, noting normal condensation patterns on heat exchanger surface and verifying proper burner operation. All accessible components photographed and found to be in satisfactory working condition. Filter size 16x25x4 not included per agreement terms.
Winnetka, IL 60093
Completed comprehensive maintenance agreement service on two condenser units. Inspected electrical compartments revealing aged capacitor and multiple contactors with proper wiring connections intact. Observed significant debris accumulation on condenser coils requiring attention. Documented equipment condition showing weathering consistent with extended service life, including 4x15 marking on electrical panel. Both units assessed and photographed for maintenance records.
Completed comprehensive maintenance agreement service on two condenser units. Inspected electrical compartments revealing aged capacitor and multiple contactors with proper wiring connections intact. Observed significant debris accumulation on condenser coils requiring attention. Documented equipment condition showing weathering consistent with extended service life, including 4x15 marking on electrical panel. Both units assessed and photographed for maintenance records.
Sam A.
Sam A. Checked in
Completed comprehensive maintenance agreement service on two condenser units. Inspected electrical compartments revealing aged capacitor and multiple contactors with proper wiring connections intact. Observed significant debris accumulation on condenser coils requiring attention. Documented equipment condition showing weathering consistent with extended service life, including 4x15 marking on electrical panel. Both units assessed and photographed for maintenance records.
Winnetka, IL 60093
Winnetka, IL - Completed warranty callback to install Infinity backplate on recently installed thermostat. Removed existing thermostat cover, secured new backplate to wall, verified all wire connections (R, Y, G, W, C) were properly terminated to circuit board, and reinstalled thermostat. System tested and operational upon completion.
Adrian M.
Adrian M. Checked in
Completed warranty callback to install Infinity backplate on recently installed thermostat. Removed existing thermostat cover, secured new backplate to wall, verified all wire connections (R, Y, G, W, C) were properly terminated to circuit board, and reinstalled thermostat. System tested and operational upon completion.
Winnetka, IL 60093
Completed comprehensive spring cooling tune-up on two air conditioning systems per maintenance agreement protocol. Performed thorough inspection of condenser coils for cleanliness and leaks, verified refrigerant charge levels, and tested indoor relative humidity levels. Inspected blower motor and wheel assemblies for debris accumulation, cycled all operating controls, and verified proper function of line voltage switches and wiring connections. Examined electrical components including capacitors and contactors for tight connections and signs of deterioration, confirmed condensate drainage system operating properly, and inspected refrigerant lines for visible leaks and insulation integrity. Both units found in good operating condition with all safety and performance parameters within manufacturer specifications.
Completed comprehensive spring cooling tune-up on two air conditioning systems per maintenance agreement protocol. Performed thorough inspection of condenser coils for cleanliness and leaks, verified refrigerant charge levels, and tested indoor relative humidity levels. Inspected blower motor and wheel assemblies for debris accumulation, cycled all operating controls, and verified proper function of line voltage switches and wiring connections. Examined electrical components including capacitors and contactors for tight connections and signs of deterioration, confirmed condensate drainage system operating properly, and inspected refrigerant lines for visible leaks and insulation integrity. Both units found in good operating condition with all safety and performance parameters within manufacturer specifications.
Sam A.
Sam A. Checked in
Completed comprehensive spring cooling tune-up on two air conditioning systems per maintenance agreement protocol. Performed thorough inspection of condenser coils for cleanliness and leaks, verified refrigerant charge levels, and tested indoor relative humidity levels. Inspected blower motor and wheel assemblies for debris accumulation, cycled all operating controls, and verified proper function of line voltage switches and wiring connections. Examined electrical components including capacitors and contactors for tight connections and signs of deterioration, confirmed condensate drainage system operating properly, and inspected refrigerant lines for visible leaks and insulation integrity. Both units found in good operating condition with all safety and performance parameters within manufacturer specifications.
Winnetka, IL 60093
Replaced condenser unit and evaporator coil for upper level HVAC system. Installation completed by two-person crew in approximately four hours, including electrical disconnect box mounting, refrigerant line connections, and system startup. Thermostat displayed software upgrade error requiring USB flash drive troubleshooting during commissioning process.
Replaced condenser unit and evaporator coil for upper level HVAC system. Installation completed by two-person crew in approximately four hours, including electrical disconnect box mounting, refrigerant line connections, and system startup. Thermostat displayed software upgrade error requiring USB flash drive troubleshooting during commissioning process.
Marek S.
Marek S. Checked in
Replaced condenser unit and evaporator coil for upper level HVAC system. Installation completed by two-person crew in approximately four hours, including electrical disconnect box mounting, refrigerant line connections, and system startup. Thermostat displayed software upgrade error requiring USB flash drive troubleshooting during commissioning process.
Winnetka, IL 60093
Responded to no cooling complaint with unit unable to maintain temperature below 80 degrees and low airflow. Performed diagnostic evaluation using manifold gauge set to check refrigerant pressures and system performance. Inspected electrical components including capacitor and contactor, verified wiring connections, and assessed overall system operation to identify root cause of cooling deficiency.
Responded to no cooling complaint with unit unable to maintain temperature below 80 degrees and low airflow. Performed diagnostic evaluation using manifold gauge set to check refrigerant pressures and system performance. Inspected electrical components including capacitor and contactor, verified wiring connections, and assessed overall system operation to identify root cause of cooling deficiency.
Sam A.
Sam A. Checked in
Responded to no cooling complaint with unit unable to maintain temperature below 80 degrees and low airflow. Performed diagnostic evaluation using manifold gauge set to check refrigerant pressures and system performance. Inspected electrical components including capacitor and contactor, verified wiring connections, and assessed overall system operation to identify root cause of cooling deficiency.
Winnetka, IL 60093
Completed comprehensive cooling and heating maintenance agreement service on residential HVAC system. Performed routine inspection of outdoor condenser units, verified proper operation of all equipment components, and documented existing conditions with photographic evidence. Inspected locking mechanism hardware and confirmed all units are functioning within normal parameters.
Completed comprehensive cooling and heating maintenance agreement service on residential HVAC system. Performed routine inspection of outdoor condenser units, verified proper operation of all equipment components, and documented existing conditions with photographic evidence. Inspected locking mechanism hardware and confirmed all units are functioning within normal parameters.
Gabe G.
Gabe G. Checked in
Completed comprehensive cooling and heating maintenance agreement service on residential HVAC system. Performed routine inspection of outdoor condenser units, verified proper operation of all equipment components, and documented existing conditions with photographic evidence. Inspected locking mechanism hardware and confirmed all units are functioning within normal parameters.
Winnetka, IL 60093
Winnetka, IL - Responded to no cooling complaint on recently installed AC system. Performed diagnostic testing on Carrier furnace and air handler assembly using multimeter to verify electrical connections and system operation. Confirmed all installation components including venting, drainage lines, and humidifier integration were properly installed and functioning as designed, with system now operating within manufacturer specifications and delivering proper cooling performance.
Gerardo M.
Gerardo M. Checked in
Responded to no cooling complaint on recently installed AC system. Performed diagnostic testing on Carrier furnace and air handler assembly using multimeter to verify electrical connections and system operation. Confirmed all installation components including venting, drainage lines, and humidifier integration were properly installed and functioning as designed, with system now operating within manufacturer specifications and delivering proper cooling performance.
Winnetka, IL 60093
Returned to property to complete warranty work on HVAC system by connecting low voltage wire that was left disconnected on previous visit. Located electrical panel serving dual-zone HVAC system with Lenox upstairs AC condenser and Bosch downstairs AC condenser circuits clearly labeled. Accessed control board assembly and verified proper wire termination at terminal blocks. Connected low voltage control wire to appropriate terminal on circuit board, ensuring secure connection at screw terminal. Verified all wire connections were properly seated and tightened at both the control board and central relay component. Tested system operation to confirm proper communication between thermostat and equipment. System now operating as designed with all control wiring properly connected and functional.
Returned to property to complete warranty work on HVAC system by connecting low voltage wire that was left disconnected on previous visit. Located electrical panel serving dual-zone HVAC system with Lenox upstairs AC condenser and Bosch downstairs AC condenser circuits clearly labeled. Accessed control board assembly and verified proper wire termination at terminal blocks. Connected low voltage control wire to appropriate terminal on circuit board, ensuring secure connection at screw terminal. Verified all wire connections were properly seated and tightened at both the control board and central relay component. Tested system operation to confirm proper communication between thermostat and equipment. System now operating as designed with all control wiring properly connected and functional.
Paul M.
Paul M. Checked in
Returned to property to complete warranty work on HVAC system by connecting low voltage wire that was left disconnected on previous visit. Located electrical panel serving dual-zone HVAC system with Lenox upstairs AC condenser and Bosch downstairs AC condenser circuits clearly labeled. Accessed control board assembly and verified proper wire termination at terminal blocks. Connected low voltage control wire to appropriate terminal on circuit board, ensuring secure connection at screw terminal. Verified all wire connections were properly seated and tightened at both the control board and central relay component. Tested system operation to confirm proper communication between thermostat and equipment. System now operating as designed with all control wiring properly connected and functional.
Winnetka, IL 60093
Performed comprehensive maintenance inspection on dual HVAC system consisting of two air handlers and two condensing units. Investigated reported issue of system shutting off and tripping breaker despite recent electrical rewiring by electrician. Conducted diagnostic testing including airflow measurements at supply registers and thorough visual inspection of both air handler units in attic mechanical space, checking electrical connections, refrigerant lines, condensate drainage, and all safety controls to identify source of electrical short occurring when system operates.
Performed comprehensive maintenance inspection on dual HVAC system consisting of two air handlers and two condensing units. Investigated reported issue of system shutting off and tripping breaker despite recent electrical rewiring by electrician. Conducted diagnostic testing including airflow measurements at supply registers and thorough visual inspection of both air handler units in attic mechanical space, checking electrical connections, refrigerant lines, condensate drainage, and all safety controls to identify source of electrical short occurring when system operates.
Angel G.
Angel G. Checked in
Performed comprehensive maintenance inspection on dual HVAC system consisting of two air handlers and two condensing units. Investigated reported issue of system shutting off and tripping breaker despite recent electrical rewiring by electrician. Conducted diagnostic testing including airflow measurements at supply registers and thorough visual inspection of both air handler units in attic mechanical space, checking electrical connections, refrigerant lines, condensate drainage, and all safety controls to identify source of electrical short occurring when system operates.
Winnetka, IL 60093

Client Testimonials

Read the opinions of our satisfied customers.

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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