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Heating and Cooling Service in Glen Ellyn, IL

Furnace, boiler and air conditioner repair, replacement and maintenance for homes in Glen Ellyn, IL.

Request service Call (708) 673-5633
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SquareHVAC owner inspecting furnace venting in an older Glen Ellyn home

Local service area

Heating and cooling service in Glen Ellyn

Heating, boiler and cooling service with repair and replacement options explained clearly.

Who we serve
Homes and businesses
Confirm your address
Tell us the service address when you call or send a request.
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Service in Glen Ellyn

SquareHVAC is based in Hillside and serves Glen Ellyn. Call to confirm service at your address.

View the complete service area
The highlighted marker shows Glen Ellyn; the navy marker shows the SquareHVAC home base in Hillside. Map locations are approximate.

Choose a service

What do you need in Glen Ellyn?

Choose the system or problem that best matches your property. Open a card to see what the service covers without leaving this city page.

Air conditioning

Repair, replacement and maintenance for central and ductless cooling.

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Available in Glen Ellyn

  • Cooling that will not start or does not cool properly
  • Central air and ductless cooling systems
  • Repair, replacement and seasonal maintenance
See air conditioning repair 

Heating

Furnace and boiler repair, replacement and routine service.

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Available in Glen Ellyn

  • No heat, weak heat or unusual system behavior
  • Furnaces, boilers and related controls
  • Repair, replacement and seasonal maintenance
See heating repair 

Heat pumps

Heating and cooling service for air-source and geothermal systems.

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Available in Glen Ellyn

  • Heating or cooling problems
  • Air-source and geothermal systems
  • Repair, replacement and maintenance
See heat pump service 

Indoor air & ducts

Duct repair, cleaning, humidity control and air-cleaning equipment.

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Available in Glen Ellyn

  • Damaged ducts, weak airflow or dust concerns
  • Duct repair and cleaning
  • Humidity control and air-cleaning equipment
See duct cleaning 

Maintenance

A bookable visit to inspect and maintain heating or cooling equipment.

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Available in Glen Ellyn

  • Seasonal inspection and maintenance
  • Heating and cooling equipment
  • Findings explained before additional work is considered
See maintenance visits 
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Choose your next step

What should you do next?

Not sure if you need service now or can wait? Use these signs to choose a practical next step. Talking through what your system is doing does not commit you to an appointment.

Smell gas? Leave the building and call your gas company first. Then call us.

Emergency service is available 24/7, including Sundays.

Urgent

Call now

Call now if you see smoke, flames or signs of a fire (leave the building, stay out and call 911), water is leaking from the equipment, or the system has stopped and the quick checks below did not help.

Call (708) 673-5633

Within a few days

Request service soon

Arrange a visit when rooms are uneven, performance has changed, or the system repeatedly needs attention.

Send a service request

No rush

Monitor and plan

If the system still works, note changes in noise, comfort or energy use and plan the next maintenance visit.

Plan a maintenance visit

Quick checks before you call

  • Check the thermostat: is it set to heat or cool, and is the set point where you expect?
  • Check the filter: a clogged filter limits airflow. Replace it if it is visibly dirty.
  • Check the power: look at the breaker and the equipment switch near the unit.
  • Check the airflow: hold a hand at a supply register and feel whether air is moving.
  • Check the outdoor unit: clear leaves and debris from around it.

Signs to call us about

  • Ice on the coils, or an outdoor unit that runs without cooling.
  • A breaker that trips repeatedly whenever the system starts.

SquareHVAC looks after the heating and cooling of homes in Glen Ellyn: repairs, new systems and regular maintenance. We are a family-owned company based in Hillside. Serving homeowners and businesses since 2009.

Thinking about a new furnace?

A new furnace is a decision for many years, so it helps to understand the choices first. Our guide to 80 AFUE and 96 AFUE furnaces explains the two common efficiency levels in clear language: what changes in the gas bill, in the venting and in comfort. When you are ready, we look at your home and give you a written quote.

Local information

Local information for Glen Ellyn

What happens next

How service works

From your first call to a written quote and work you approve.

  1. 1

    Tell us what's happening

    Describe the problem and give us the property address.

  2. 2

    We assess the system

    We inspect the equipment and explain what we find.

  3. 3

    Review your written quote

    We explain the proposed work and cost so you can decide.

  4. 4

    We begin after your approval

    Work starts once you approve the quote.

Common questions about HVAC service in Glen Ellyn

Do you work on older heating systems?
Yes. We repair and service furnaces and boilers of all major brands, including older systems. If a part is no longer made, we tell you, and we explain what your options are.
Do you also check ducts and air quality?
Yes. We repair and clean ducts, and we install humidifiers and dehumidifiers and air cleaning products.
How soon can you come to Glen Ellyn?
We aim to arrive within 2 hours from the time you call, depending on the distance to your location and current availability. When we confirm a specific appointment time, we keep it. If an unavoidable delay happens, we'll let you know.
When are you open?
Emergency service is available 24/7, including Sundays. Routine visits are Monday to Friday from 6:00 AM to 8:00 PM and Saturday from 8:00 AM to 5:00 PM. Non-emergency visits outside routine service hours are scheduled for the next working period.
Will I know the cost before the work starts?
Yes. We assess the system, explain what we found and provide a written quote for approval before work begins. Nothing is done until you approve it.

Nearby communities

Service around Glen Ellyn

SquareHVAC also serves nearby communities. Use the full Service Areas page to check the complete list.

Lombard Downers Grove Elmhurst Hillside
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Next step

Request service in Glen Ellyn

SquareHVAC serves Glen Ellyn and the surrounding communities with heating and cooling repair, replacement and maintenance. We inspect the equipment, explain what we find and provide a written quote with parts and labor listed separately. You decide if and when the work happens. Serving homeowners and businesses since 2009.

Request service Call (708) 673-5633