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HVAC & Plumbing Services in Skokie, IL

Heating and Cooling Services in Skokie

Homeowners in the “Village of Vision.” Skokie’s residential landscape is a unique mix of classic Chicago-style bungalows, mid-century ranches, and contemporary developments. This diversity requires an HVAC company in Skokie that is equally comfortable servicing a 1940s boiler as it is installing the latest smart-home integrated climate technology.

Since 1922, Deljo Heating, Cooling & Plumbing has been a mainstay for Skokie homeowners. Wherever in the community you live or what your needs are, our NATE-certified technicians deliver honest, high-quality HVAC and plumbing services in Skokie.

If you need help heating or cooling your Skokie home or business,

call us at 773-829-4295 to schedule an appointment.

Smart Cooling Solutions for Skokie Neighborhoods

Skokie’s summer weather can be punishing, with high humidity levels that demand more from an air conditioning system than just cold air. We specialize in AC services in Skokie that focus on total indoor air quality and moisture control, ensuring your home remains a sanctuary all summer long.

Our Skokie cooling specializations:

  • Air Conditioner Repair: Rapid diagnostics and 24/7 support to restore cooling and dehumidification during heatwaves.
  • Air Conditioner Installation: Expert sizing of modern AC systems that will reduce utility costs and improve home comfort.
  • Ductless Air Conditioning: These silent, efficient systems are a perfect retrofit for Skokie bungalows with radiant heat, providing modern cooling without ductwork.
  • Air Conditioner Maintenance: Precision tune-ups to extend your unit’s life and prevent seasonal breakdowns.
  • Zone Control Systems: Specialized dampers and thermostats to balance temperatures in split-level and multi-story homes.

HVAC Service & Installation in Skokie, IL

Reliable Heating Services in Skokie

When the winter wind picks up across the North Shore, your heating system becomes your home’s most critical line of defense. As a premier heating company in Skokie, we provide comprehensive heating services for every system type, ensuring your family stays warm through the harshest Illinois winters.

Our heating & furnace services in Skokie include:

  • Furnace Repair: Prompt 24/7 furnace repairs in Skokie, addressing ignition failures, motor issues, safety sensor malfunctions, and more.
  • Boiler Repair & Maintenance: We have the necessary technical knowledge to install, repair, and maintain boilers.
  • Furnace Installation: We professionally install high-efficiency furnaces designed to provide maximum warmth with a smaller carbon footprint, replacing your old unit if necessary.
  • Heat Pump Installation: Heat pumps are versatile, all-electric options that offer efficient heating and cooling in a single high-performance unit.

Trust our Skokie heating experts for everything from quick repairs to intensive system overhauls, all backed by over a century of experience.

Trusted Plumbing Services in Skokie

As a full-service plumbing company in Skokie, we provide the technical mastery needed to protect your home from water damage and ensure your fixtures operate flawlessly.

If you are looking for a licensed plumber in Skokie, our team offers:

  • Sump Pumps: Installation of primary and battery-backup pumps to protect your basement from water intrusion caused by Skokie’s high water table.
  • Sewer Line Services: We perform camera inspections and root clearing to prevent major main-line backups and property damage.
  • Water Heaters: Expert plumbing services in Skokie for same-day repair or installation of tank and tankless models.
  • Drain Cleaning: Advanced clearing of kitchen and bath lines to restore proper flow and hygiene.

Our knowledge of Skokie’s underground infrastructure and specific regional challenges allows us to handle plumbing jobs in the area with ease.

The Value of Local Expertise in Skokie

Skokie is famous for its mid-century modern aesthetic and the iconic bungalows that border the city of Chicago. However, these architectural styles present distinct HVAC challenges. For example, many homes in Skokie were built with heating systems that weren’t designed for modern high-efficiency cooling.

Standard AC services often overlook the “static pressure” issues found in older ductwork, which can lead to noisy operation and premature equipment failure. Our technicians are trained to calibrate airflow specifically for these older layouts.

Additionally, the area’s clay-rich soil tends to retain moisture, placing immense hydrostatic pressure on basements. We provide specialized flood control and sump pump configurations that account for these local geological factors.

24/7 Emergency Services in Skokie

We provide rapid-response emergency services in Skokie to mitigate property damage and restore your home’s essential safety. Our emergency HVAC service and emergency plumbing specialists remain on standby 24/7/365, arriving with the high-level diagnostic equipment and replacement parts required to fix the issue immediately. We prioritize our Skokie neighbors to ensure that no home is left without heat, cooling, or water for longer than necessary.

Schedule Your Plumbing or HVAC Services in Skokie Today

Our Gold Star Maintenance Program, our 104-year history of honesty, and our “fix it first” philosophy set us apart from other HVAC and plumbing companies that serve Skokie. We respect your property, your time, and your budget, delivering professional results without high-pressure sales tactics.

Call us today or contact us online to schedule your Skokie service today.

Recent Jobs and Reviews in Skokie, IL

Skokie, IL at a glance

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

The most recent job was on June 10, 2026.

Deljo Heating, Cooling & Plumbing has completed 70 jobs in Skokie, IL in the last 12 months.

Job Locations and Reviews

Responded to no cooling complaint on residential HVAC system. Upon arrival, confirmed unit was blowing warm air when thermostat set to cooling mode with display reading 91°F. Inspected indoor air handler components including blower motor, control board, and electrical connections, all of which appeared properly wired and in functional condition. Based on initial assessment of indoor unit showing no obvious electrical faults or mechanical issues, further diagnostic testing of outdoor condensing unit and refrigerant system would be required to isolate root cause of cooling failure.
Responded to no cooling complaint on residential HVAC system. Upon arrival, confirmed unit was blowing warm air when thermostat set to cooling mode with display reading 91°F. Inspected indoor air handler components including blower motor, control board, and electrical connections, all of which appeared properly wired and in functional condition. Based on initial assessment of indoor unit showing no obvious electrical faults or mechanical issues, further diagnostic testing of outdoor condensing unit and refrigerant system would be required to isolate root cause of cooling failure.
Sal C.
Sal C. Checked in
Responded to no cooling complaint on residential HVAC system. Upon arrival, confirmed unit was blowing warm air when thermostat set to cooling mode with display reading 91°F. Inspected indoor air handler components including blower motor, control board, and electrical connections, all of which appeared properly wired and in functional condition. Based on initial assessment of indoor unit showing no obvious electrical faults or mechanical issues, further diagnostic testing of outdoor condensing unit and refrigerant system would be required to isolate root cause of cooling failure.
Skokie, IL 60077
Responded to callback for recently installed AC system not maintaining desired temperature setpoint. Inspected ductwork and air handler components, documented insulation liner condition and UL-listed foil tape applications at seams and joints. Verified air filter installation and condition, confirmed proper pleated media filter in place with clean airflow surface. System operational upon departure.
Responded to callback for recently installed AC system not maintaining desired temperature setpoint. Inspected ductwork and air handler components, documented insulation liner condition and UL-listed foil tape applications at seams and joints. Verified air filter installation and condition, confirmed proper pleated media filter in place with clean airflow surface. System operational upon departure.
Gerardo M.
Gerardo M. Checked in
Responded to callback for recently installed AC system not maintaining desired temperature setpoint. Inspected ductwork and air handler components, documented insulation liner condition and UL-listed foil tape applications at seams and joints. Verified air filter installation and condition, confirmed proper pleated media filter in place with clean airflow surface. System operational upon departure.
Skokie, IL 60077
Conducted comprehensive evaluation of existing 20+ year old HVAC system located in attic utility space with confirmed refrigerant leak previously diagnosed by another contractor. Assessed cramped installation area with sloped ceiling and limited access for equipment removal and replacement considerations. Inspected current heating and cooling unit, blower assembly, copper refrigerant lines with service valves, and associated ductwork connections. Documented existing system configuration including electrical wiring, condensate drainage, and mechanical room plumbing components. Provided detailed estimate for complete HVAC system replacement including new air handler, condensing unit, refrigerant line set, electrical connections, thermostat, and all necessary accessories to restore reliable climate control operation.
Conducted comprehensive evaluation of existing 20+ year old HVAC system located in attic utility space with confirmed refrigerant leak previously diagnosed by another contractor. Assessed cramped installation area with sloped ceiling and limited access for equipment removal and replacement considerations. Inspected current heating and cooling unit, blower assembly, copper refrigerant lines with service valves, and associated ductwork connections. Documented existing system configuration including electrical wiring, condensate drainage, and mechanical room plumbing components. Provided detailed estimate for complete HVAC system replacement including new air handler, condensing unit, refrigerant line set, electrical connections, thermostat, and all necessary accessories to restore reliable climate control operation.
John T.
John T. Checked in
Conducted comprehensive evaluation of existing 20+ year old HVAC system located in attic utility space with confirmed refrigerant leak previously diagnosed by another contractor. Assessed cramped installation area with sloped ceiling and limited access for equipment removal and replacement considerations. Inspected current heating and cooling unit, blower assembly, copper refrigerant lines with service valves, and associated ductwork connections. Documented existing system configuration including electrical wiring, condensate drainage, and mechanical room plumbing components. Provided detailed estimate for complete HVAC system replacement including new air handler, condensing unit, refrigerant line set, electrical connections, thermostat, and all necessary accessories to restore reliable climate control operation.
Skokie, IL 60076
Completed routine HVAC maintenance agreement service on split system including outdoor condensing unit and indoor air handler/furnace. Performed comprehensive system inspection, verified proper operation of all components, and documented equipment condition with photos showing outdoor unit positioned against brick wall with moss growth on surrounding surfaces and indoor equipment installation in utility closet with connected ductwork and piping.
Completed routine HVAC maintenance agreement service on split system including outdoor condensing unit and indoor air handler/furnace. Performed comprehensive system inspection, verified proper operation of all components, and documented equipment condition with photos showing outdoor unit positioned against brick wall with moss growth on surrounding surfaces and indoor equipment installation in utility closet with connected ductwork and piping.
Gabe G.
Gabe G. Checked in
Completed routine HVAC maintenance agreement service on split system including outdoor condensing unit and indoor air handler/furnace. Performed comprehensive system inspection, verified proper operation of all components, and documented equipment condition with photos showing outdoor unit positioned against brick wall with moss growth on surrounding surfaces and indoor equipment installation in utility closet with connected ductwork and piping.
Skokie, IL 60076
Completed inspection of 8-year-old frost-free hose bib requiring replacement at residential property. Examined exterior wall-mounted fixtures on red brick facade and assessed interior plumbing access point. Documented existing hose bib condition, wall penetration location, and surrounding infrastructure including downspout proximity to replacement area.
Completed inspection of 8-year-old frost-free hose bib requiring replacement at residential property. Examined exterior wall-mounted fixtures on red brick facade and assessed interior plumbing access point. Documented existing hose bib condition, wall penetration location, and surrounding infrastructure including downspout proximity to replacement area.
Donny G.
Donny G. Checked in
Completed inspection of 8-year-old frost-free hose bib requiring replacement at residential property. Examined exterior wall-mounted fixtures on red brick facade and assessed interior plumbing access point. Documented existing hose bib condition, wall penetration location, and surrounding infrastructure including downspout proximity to replacement area.
Skokie, IL 60076
Performed preventive maintenance on boiler system under service agreement. Removed and inspected inlet water filter screen, which showed debris accumulation. Cleaned filter component by soaking in solution to remove sediment and mineral deposits. Reinstalled filter with proper threading and verified secure connection. Inspected all associated plumbing connections, brass fittings, shut-off valves, and flexible supply lines for signs of wear or leakage. Confirmed system integrity and proper operation upon completion.
Performed preventive maintenance on boiler system under service agreement. Removed and inspected inlet water filter screen, which showed debris accumulation. Cleaned filter component by soaking in solution to remove sediment and mineral deposits. Reinstalled filter with proper threading and verified secure connection. Inspected all associated plumbing connections, brass fittings, shut-off valves, and flexible supply lines for signs of wear or leakage. Confirmed system integrity and proper operation upon completion.
Sam A.
Sam A. Checked in
Performed preventive maintenance on boiler system under service agreement. Removed and inspected inlet water filter screen, which showed debris accumulation. Cleaned filter component by soaking in solution to remove sediment and mineral deposits. Reinstalled filter with proper threading and verified secure connection. Inspected all associated plumbing connections, brass fittings, shut-off valves, and flexible supply lines for signs of wear or leakage. Confirmed system integrity and proper operation upon completion.
Skokie, IL 60077
Completed routine HVAC maintenance agreement service on residential air handler system with condensate pump. Performed standard inspection of unit components, verified proper operation of drainage system and PVC piping connections, and confirmed condensate pump functionality. System operating within normal parameters upon completion of maintenance visit.
Completed routine HVAC maintenance agreement service on residential air handler system with condensate pump. Performed standard inspection of unit components, verified proper operation of drainage system and PVC piping connections, and confirmed condensate pump functionality. System operating within normal parameters upon completion of maintenance visit.
Jay L.
Jay L. Checked in
Completed routine HVAC maintenance agreement service on residential air handler system with condensate pump. Performed standard inspection of unit components, verified proper operation of drainage system and PVC piping connections, and confirmed condensate pump functionality. System operating within normal parameters upon completion of maintenance visit.
Skokie, IL 60077
Completed air conditioning system installation in residential setting with one lead technician and one helper in half-day timeframe. Installed new air handler unit in utility closet with proper mounting and secured all electrical connections including control board with indicator lights and power supply. Ran and connected copper refrigerant lines with brass shut-off valves and installed filter-drier component in refrigerant circuit. Properly insulated suction line with foam insulation and secured all piping to exterior wall using cable ties for professional appearance and code compliance. Verified all connections, tested system operation, and confirmed proper functionality of all components.
Completed air conditioning system installation in residential setting with one lead technician and one helper in half-day timeframe. Installed new air handler unit in utility closet with proper mounting and secured all electrical connections including control board with indicator lights and power supply. Ran and connected copper refrigerant lines with brass shut-off valves and installed filter-drier component in refrigerant circuit. Properly insulated suction line with foam insulation and secured all piping to exterior wall using cable ties for professional appearance and code compliance. Verified all connections, tested system operation, and confirmed proper functionality of all components.
Richard G.
Richard G. Checked in
Completed air conditioning system installation in residential setting with one lead technician and one helper in half-day timeframe. Installed new air handler unit in utility closet with proper mounting and secured all electrical connections including control board with indicator lights and power supply. Ran and connected copper refrigerant lines with brass shut-off valves and installed filter-drier component in refrigerant circuit. Properly insulated suction line with foam insulation and secured all piping to exterior wall using cable ties for professional appearance and code compliance. Verified all connections, tested system operation, and confirmed proper functionality of all components.
Skokie, IL 60077
Conducted comprehensive site assessment of residential plumbing system with original galvanized piping requiring conversion to copper. Inspected dual water heater installation in utility area, evaluating existing gas valve assemblies, ventilation configurations, and connection points. Assessed routing pathways through walls and ceiling cavities where existing black iron and galvanized supply lines will require replacement. Documented congested mechanical chase areas containing multiple utility runs that will need coordination during repipe execution. Photographed water heater setup including control mechanisms, brass fittings, and venting arrangements to ensure proper integration with new copper distribution system. Evaluated water filtration system requirements and optimal placement locations. Prepared estimate for complete galvanized-to-copper repipe project including water treatment system installation.
Conducted comprehensive site assessment of residential plumbing system with original galvanized piping requiring conversion to copper. Inspected dual water heater installation in utility area, evaluating existing gas valve assemblies, ventilation configurations, and connection points. Assessed routing pathways through walls and ceiling cavities where existing black iron and galvanized supply lines will require replacement. Documented congested mechanical chase areas containing multiple utility runs that will need coordination during repipe execution. Photographed water heater setup including control mechanisms, brass fittings, and venting arrangements to ensure proper integration with new copper distribution system. Evaluated water filtration system requirements and optimal placement locations. Prepared estimate for complete galvanized-to-copper repipe project including water treatment system installation.
Bashar D.
Bashar D. Checked in
Conducted comprehensive site assessment of residential plumbing system with original galvanized piping requiring conversion to copper. Inspected dual water heater installation in utility area, evaluating existing gas valve assemblies, ventilation configurations, and connection points. Assessed routing pathways through walls and ceiling cavities where existing black iron and galvanized supply lines will require replacement. Documented congested mechanical chase areas containing multiple utility runs that will need coordination during repipe execution. Photographed water heater setup including control mechanisms, brass fittings, and venting arrangements to ensure proper integration with new copper distribution system. Evaluated water filtration system requirements and optimal placement locations. Prepared estimate for complete galvanized-to-copper repipe project including water treatment system installation.
Skokie, IL 60076
Performed routine HVAC maintenance agreement service on system with two condensers. Inspected control board and electrical connections within the unit, verifying proper wiring harness connections and component operation. Replaced two air filters: one 16x25x1 and one 14x25x1, removing old filters and installing new pleated media filters to maintain proper airflow and system efficiency.
Performed routine HVAC maintenance agreement service on system with two condensers. Inspected control board and electrical connections within the unit, verifying proper wiring harness connections and component operation. Replaced two air filters: one 16x25x1 and one 14x25x1, removing old filters and installing new pleated media filters to maintain proper airflow and system efficiency.
Gerardo M.
Gerardo M. Checked in
Performed routine HVAC maintenance agreement service on system with two condensers. Inspected control board and electrical connections within the unit, verifying proper wiring harness connections and component operation. Replaced two air filters: one 16x25x1 and one 14x25x1, removing old filters and installing new pleated media filters to maintain proper airflow and system efficiency.
Skokie, IL 60076
Performed comprehensive site assessment for complete air conditioning system replacement at residential property. Evaluated existing outdoor condenser unit and measured installation space to determine equipment specifications and clearance requirements. Provided three-tier replacement options featuring Carrier AC systems with matching evaporator coils: Good tier offering up to 14 SEER nominal efficiency, Better tier with up to 17 SEER nominal efficiency, and Best tier achieving up to 19 SEER nominal efficiency.
Performed comprehensive site assessment for complete air conditioning system replacement at residential property. Evaluated existing outdoor condenser unit and measured installation space to determine equipment specifications and clearance requirements. Provided three-tier replacement options featuring Carrier AC systems with matching evaporator coils: Good tier offering up to 14 SEER nominal efficiency, Better tier with up to 17 SEER nominal efficiency, and Best tier achieving up to 19 SEER nominal efficiency.
Jim C.
Jim C. Checked in
Performed comprehensive site assessment for complete air conditioning system replacement at residential property. Evaluated existing outdoor condenser unit and measured installation space to determine equipment specifications and clearance requirements. Provided three-tier replacement options featuring Carrier AC systems with matching evaporator coils: Good tier offering up to 14 SEER nominal efficiency, Better tier with up to 17 SEER nominal efficiency, and Best tier achieving up to 19 SEER nominal efficiency.
Skokie, IL 60077
Completed preventive maintenance agreement service on residential HVAC system including Carrier furnace and Bosch condenser unit. Performed comprehensive inspection of indoor air handler, verified proper operation of all mechanical components, and inspected outdoor condensing unit for proper airflow and clearances. Documented equipment condition with photos and confirmed system operating within manufacturer specifications per agreement terms.
Completed preventive maintenance agreement service on residential HVAC system including Carrier furnace and Bosch condenser unit. Performed comprehensive inspection of indoor air handler, verified proper operation of all mechanical components, and inspected outdoor condensing unit for proper airflow and clearances. Documented equipment condition with photos and confirmed system operating within manufacturer specifications per agreement terms.
Jay L.
Jay L. Checked in
Completed preventive maintenance agreement service on residential HVAC system including Carrier furnace and Bosch condenser unit. Performed comprehensive inspection of indoor air handler, verified proper operation of all mechanical components, and inspected outdoor condensing unit for proper airflow and clearances. Documented equipment condition with photos and confirmed system operating within manufacturer specifications per agreement terms.
Skokie, IL 60077
Conducted comprehensive assessment of existing residential HVAC system for replacement estimate. Inspected and documented current air handler unit and ductwork configuration in mechanical space, measuring existing equipment dimensions and clearances to determine proper replacement unit sizing. Evaluated copper refrigerant lines, insulated piping, and rigid metal ductwork connections for compatibility with new system installation. Photographed existing equipment setup including vertical duct runs, flexible aluminum ducting, and current air handler positioning to ensure accurate replacement specifications. Assessed electrical connections, mounting locations, and accessibility for future installation work.
Conducted comprehensive assessment of existing residential HVAC system for replacement estimate. Inspected and documented current air handler unit and ductwork configuration in mechanical space, measuring existing equipment dimensions and clearances to determine proper replacement unit sizing. Evaluated copper refrigerant lines, insulated piping, and rigid metal ductwork connections for compatibility with new system installation. Photographed existing equipment setup including vertical duct runs, flexible aluminum ducting, and current air handler positioning to ensure accurate replacement specifications. Assessed electrical connections, mounting locations, and accessibility for future installation work.
Matthew A.
Matthew A. Checked in
Conducted comprehensive assessment of existing residential HVAC system for replacement estimate. Inspected and documented current air handler unit and ductwork configuration in mechanical space, measuring existing equipment dimensions and clearances to determine proper replacement unit sizing. Evaluated copper refrigerant lines, insulated piping, and rigid metal ductwork connections for compatibility with new system installation. Photographed existing equipment setup including vertical duct runs, flexible aluminum ducting, and current air handler positioning to ensure accurate replacement specifications. Assessed electrical connections, mounting locations, and accessibility for future installation work.
Skokie, IL 60077
Completed cooling check, air conditioning general service, and maintenance agreement inspection. Verified thermostat operation and calibration, confirmed proper temperature display and control functionality. Inspected HVAC system components including Carrier humidifier unit, ductwork connections, refrigerant lines, and electrical wiring connections. All equipment operating within normal parameters, system maintaining proper temperature control and humidity levels.
Completed cooling check, air conditioning general service, and maintenance agreement inspection. Verified thermostat operation and calibration, confirmed proper temperature display and control functionality. Inspected HVAC system components including Carrier humidifier unit, ductwork connections, refrigerant lines, and electrical wiring connections. All equipment operating within normal parameters, system maintaining proper temperature control and humidity levels.
Jay L.
Jay L. Checked in
Completed cooling check, air conditioning general service, and maintenance agreement inspection. Verified thermostat operation and calibration, confirmed proper temperature display and control functionality. Inspected HVAC system components including Carrier humidifier unit, ductwork connections, refrigerant lines, and electrical wiring connections. All equipment operating within normal parameters, system maintaining proper temperature control and humidity levels.
Skokie, IL 60077
Completed comprehensive air conditioning maintenance agreement inspection on outdoor HVAC system. Performed thorough examination of condenser coil for cleanliness and potential leaks, inspected blower motor and wheel for debris accumulation, and tested indoor relative humidity levels. Measured refrigerant levels and cycled all operating controls to verify proper functionality. Conducted electrical safety inspection including line voltage switch, wiring connections, and checked for any deterioration or loose connections. Inspected condensate drainage system for proper operation and verified refrigerant lines for visible leaks and insulation integrity. All components functioning within normal parameters upon completion of inspection protocol.
Completed comprehensive air conditioning maintenance agreement inspection on outdoor HVAC system. Performed thorough examination of condenser coil for cleanliness and potential leaks, inspected blower motor and wheel for debris accumulation, and tested indoor relative humidity levels. Measured refrigerant levels and cycled all operating controls to verify proper functionality. Conducted electrical safety inspection including line voltage switch, wiring connections, and checked for any deterioration or loose connections. Inspected condensate drainage system for proper operation and verified refrigerant lines for visible leaks and insulation integrity. All components functioning within normal parameters upon completion of inspection protocol.
Angel C.
Angel C. Checked in
Completed comprehensive air conditioning maintenance agreement inspection on outdoor HVAC system. Performed thorough examination of condenser coil for cleanliness and potential leaks, inspected blower motor and wheel for debris accumulation, and tested indoor relative humidity levels. Measured refrigerant levels and cycled all operating controls to verify proper functionality. Conducted electrical safety inspection including line voltage switch, wiring connections, and checked for any deterioration or loose connections. Inspected condensate drainage system for proper operation and verified refrigerant lines for visible leaks and insulation integrity. All components functioning within normal parameters upon completion of inspection protocol.
Skokie, IL 60076
# HVAC Maintenance Agreement Service

Completed comprehensive preventive maintenance inspection on residential air conditioning system. Performed electrical component evaluation including capacitor and contactor testing with proper voltage and amperage readings. Inspected and documented all electrical connections, refrigerant line sets, and outdoor condenser unit condition. All components found operating within manufacturer specifications. System tested and confirmed functioning properly upon completion of maintenance protocol.
# HVAC Maintenance Agreement Service

Completed comprehensive preventive maintenance inspection on residential air conditioning system. Performed electrical component evaluation including capacitor and contactor testing with proper voltage and amperage readings. Inspected and documented all electrical connections, refrigerant line sets, and outdoor condenser unit condition. All components found operating within manufacturer specifications. System tested and confirmed functioning properly upon completion of maintenance protocol.
Jay L.
Jay L. Checked in
# HVAC Maintenance Agreement Service Completed comprehensive preventive maintenance inspection on residential air conditioning system. Performed electrical component evaluation including capacitor and contactor testing with proper voltage and amperage readings. Inspected and documented all electrical connections, refrigerant line sets, and outdoor condenser unit condition. All components found operating within manufacturer specifications. System tested and confirmed functioning properly upon completion of maintenance protocol.
Skokie, IL 60076
Completed AC tune-up on outdoor unit located in patio closet with indoor air handler. Inspected air return vent and filter, which customer maintains regularly. Performed comprehensive system inspection including electrical components, capacitors, pressure gauges, blower motor assembly, and all wiring connections. Documented system condition with photos showing filter status and internal components in functional condition with normal dust accumulation.
Completed AC tune-up on outdoor unit located in patio closet with indoor air handler. Inspected air return vent and filter, which customer maintains regularly. Performed comprehensive system inspection including electrical components, capacitors, pressure gauges, blower motor assembly, and all wiring connections. Documented system condition with photos showing filter status and internal components in functional condition with normal dust accumulation.
Gerardo M.
Gerardo M. Checked in
Completed AC tune-up on outdoor unit located in patio closet with indoor air handler. Inspected air return vent and filter, which customer maintains regularly. Performed comprehensive system inspection including electrical components, capacitors, pressure gauges, blower motor assembly, and all wiring connections. Documented system condition with photos showing filter status and internal components in functional condition with normal dust accumulation.
Skokie, IL 60077
# HVAC Service Report

Responded to service call for Carrier furnace making loud noise during startup cycle. Upon arrival, confirmed system was powered off by homeowner. Performed complete system inspection and operational testing. Thermostat verified functioning properly in auto mode with heating setpoint at 68°F. Cycled furnace through multiple startup sequences to diagnose noise concern. Inspected blower assembly, inducer motor, and ignition components for mechanical issues or loose hardware. Checked all access panels and cabinet fasteners for vibration or rattling. Verified proper gas ignition sequence and burner operation. System restored to normal operation with no abnormal sounds detected during testing. Educated homeowner on normal operational sounds versus potential mechanical concerns requiring attention.
# HVAC Service Report

Responded to service call for Carrier furnace making loud noise during startup cycle. Upon arrival, confirmed system was powered off by homeowner. Performed complete system inspection and operational testing. Thermostat verified functioning properly in auto mode with heating setpoint at 68°F. Cycled furnace through multiple startup sequences to diagnose noise concern. Inspected blower assembly, inducer motor, and ignition components for mechanical issues or loose hardware. Checked all access panels and cabinet fasteners for vibration or rattling. Verified proper gas ignition sequence and burner operation. System restored to normal operation with no abnormal sounds detected during testing. Educated homeowner on normal operational sounds versus potential mechanical concerns requiring attention.
Matt B.
Matt B. Checked in
# HVAC Service Report Responded to service call for Carrier furnace making loud noise during startup cycle. Upon arrival, confirmed system was powered off by homeowner. Performed complete system inspection and operational testing. Thermostat verified functioning properly in auto mode with heating setpoint at 68°F. Cycled furnace through multiple startup sequences to diagnose noise concern. Inspected blower assembly, inducer motor, and ignition components for mechanical issues or loose hardware. Checked all access panels and cabinet fasteners for vibration or rattling. Verified proper gas ignition sequence and burner operation. System restored to normal operation with no abnormal sounds detected during testing. Educated homeowner on normal operational sounds versus potential mechanical concerns requiring attention.
Skokie, IL 60077
Completed commercial HVAC maintenance agreement service on air conditioning system. Inspected ductwork, electrical connections, and thermostat operation; confirmed system functional with thermostat displaying proper temperature readings. Note: CC AC 201 media filter replacement not included in this service visit, scheduled for fall general service.
Completed commercial HVAC maintenance agreement service on air conditioning system. Inspected ductwork, electrical connections, and thermostat operation; confirmed system functional with thermostat displaying proper temperature readings. Note: CC AC 201 media filter replacement not included in this service visit, scheduled for fall general service.
Gregory Z.
Gregory Z. Checked in
Completed commercial HVAC maintenance agreement service on air conditioning system. Inspected ductwork, electrical connections, and thermostat operation; confirmed system functional with thermostat displaying proper temperature readings. Note: CC AC 201 media filter replacement not included in this service visit, scheduled for fall general service.
Skokie, IL 60076
Completed return visit to install compressor hard start kit and AC breakdown prevention components. Performed thorough blower wheel cleaning to remove accumulated dust and debris from squirrel cage fan assembly using power drill with brush attachment. Installed compressor saver capacitor to reduce startup amperage and extend compressor lifespan. Applied preventative maintenance measures to improve system efficiency and reduce risk of future breakdowns during peak cooling season.
Completed return visit to install compressor hard start kit and AC breakdown prevention components. Performed thorough blower wheel cleaning to remove accumulated dust and debris from squirrel cage fan assembly using power drill with brush attachment. Installed compressor saver capacitor to reduce startup amperage and extend compressor lifespan. Applied preventative maintenance measures to improve system efficiency and reduce risk of future breakdowns during peak cooling season.
Gerardo M.
Gerardo M. Checked in
Completed return visit to install compressor hard start kit and AC breakdown prevention components. Performed thorough blower wheel cleaning to remove accumulated dust and debris from squirrel cage fan assembly using power drill with brush attachment. Installed compressor saver capacitor to reduce startup amperage and extend compressor lifespan. Applied preventative maintenance measures to improve system efficiency and reduce risk of future breakdowns during peak cooling season.
Skokie, IL 60076

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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