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Heating

Furnace Repair and Heating Repair

Furnace, boiler and heat pump repair for Hillside, IL.

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SquareHVAC technician testing the controls of a gas furnace with a meter

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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

For smoke or flames, leave the building, stay out and call 911. Call us for water leaking from equipment, or if 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 your heating system is working normally, follow its routine care schedule and plan a visit when needed. If new symptoms appear, request service sooner.

Plan a heating maintenance visit

Quick checks before you call

  • Check the thermostat: is it set to heat, and is the set point above the room temperature?
  • Check the filter: a clogged filter limits airflow. Replace it if it is visibly dirty.
  • Check the power: look at the breaker and the switch on or near the furnace.
  • Check the furnace door: the front panel must be fully closed for the furnace to start.
  • Check the airflow: hold a hand at a supply register and feel whether warm air is moving.

Signs to call us about

Warning signs your heating system needs repair

  • Uneven heating some rooms are warmer than others
  • Strange noises banging, squealing or rattling sounds
  • Rising energy use bills climbing without a rate change
  • Frequent cycling the system turns on and off constantly
  • Yellow pilot light it should be blue; yellow indicates combustion issues
  • Poor airflow from the vents

When the heat stops in an Illinois winter, you need the problem found and fixed. SquareHVAC is based in Hillside and serves communities within approximately 30 road miles. We repair gas furnaces, boilers and heat pumps for homes and businesses. Every technician holds EPA Section 608 Universal certification.

American Standard furnace diagnostic board tested with a digital meter in a townhouse utility closet

What heating repair covers

Furnace repair

Furnaces are the most common heating systems in Hillside homes. We repair all makes and models: a furnace that will not turn on or blows cold air, pilot light or ignition problems, strange noises such as banging, squealing or rattling, constant cycling on and off, thermostat problems and poor airflow from the vents.

Boiler repair

Hydronic heating systems need their own expertise. We repair boiler issues including kettling noises and pressure problems, radiator cold spots, leaks, valve failures and circulator pump problems.

Heat pump service

Heat pumps work year-round in this climate. We repair refrigerant leaks, compressor issues, defrost cycle problems and reversing valve failures that stop proper heating. See heat pump service.

If the furnace light is flashing a code or the vents blow cold air, see furnace blinking 4 times or blowing cold air for the safe checks to do first.

Call us when your furnace or boiler stops. We aim to arrive within 2 hours from the time you call, depending on the distance to your location and current availability. Emergency service is available 24/7, including Sundays. Non-emergency visits outside routine service hours are scheduled for the next working period.

Repair or replacement

A repair is usually enough. Consider replacement when the system is old and a main part has failed, when it needs one repair after another, or when the system cannot keep the home comfortable. We explain both options and what each involves, and you decide.

Prevent breakdowns with a maintenance visit

One bookable maintenance visit a year helps prevent breakdowns. The visit includes a safety inspection, a heat-exchanger check, burner cleaning and adjustment, electrical connection checks, filter replacement, thermostat calibration and blower motor care.

Schedule your maintenance appointment.

The written quote

We explain what we found and what it costs, in writing, with parts and labor listed separately. You review it; you decide. Work only begins once you approve.

All services

What happens during the visit

  1. Step 1

    Request

    You call or send a request to ask for service.

  2. Step 2

    Inspection

    The technician performs a complete inspection and identifies the cause.

  3. Step 3

    Explanation

    We explain what we found in clear language and present the repair options.

  4. Step 4

    Written quote

    We provide a written quote for approval before work begins, with parts and labor listed separately.

  5. Step 5

    Approved work

    We complete the approved work, test the system and clean the work area. If we find additional work after approval, we stop, explain it, supply the added cost in writing and obtain approval before continuing.

More services and guides

Common questions about heating repair

What does furnace repair cost?
The cost depends on the fault, the parts needed, system access and labor time. We assess the system, explain what we found and provide a written quote for approval before work begins.
Is a yellow pilot light dangerous?
It can be. A yellow or orange pilot light means incomplete combustion, which can produce carbon monoxide. Switch the furnace off and request service.
Why is my furnace blowing cold air?
Common causes are thermostat settings, a dirty filter restricting airflow, ignition problems or a fault limit switch. If the furnace light is flashing a code, our guide to a furnace blinking 4 times explains the safe checks to do first.

Service area

Areas we serve

We serve Hillside and communities within approximately 30 road miles.

All service areas

Next step

Request furnace and heating repair

Tell us what is happening at your property. We will arrange a visit, explain what we find and give you a written quote with parts and labor listed separately. Nothing starts until you say go.

Request service Call (708) 673-5633