Heating and Cooling Service in Elmhurst, IL

SquareHVAC repairs, installs and maintains heating and cooling systems in Elmhurst homes.

Furnace repair in Elmhurst

Call us when the furnace gives no heat or weak heat, starts and stops, or smells or sounds different. We repair furnaces and other heating systems of all major brands, and we service boilers.

A blinking light on the furnace is often a fault code. Our guide to 4 blinks on a furnace explains what you can check safely before you call.

AC installation and repair in Elmhurst

If you need a new air conditioner, we look at the home and the existing system before recommending equipment. We explain the options and provide a written quote before work begins. See our air conditioning installation service for what the work includes. If your current system is not cooling, we also repair air conditioners.

Ducts

Rooms that are always too hot or too cold, weak airflow and dust around the vents often point to the ducts. We repair and seal ducts, install new duct runs when a room is added or changed, and clean ducts.

Plan an Elmhurst equipment visit

For a furnace fault, note the display code before resetting the system again. The code can help direct the first inspection, but it does not identify every cause by itself. For cooling, tell us whether the thermostat is asking for air conditioning, whether the indoor fan moves air and whether the outdoor unit starts. If the complaint is uneven comfort, identify the rooms rather than assuming the air conditioner needs replacement; airflow and duct conditions may matter too.

For a new AC quote, prepare the existing equipment model information if you have it and explain where comfort falls short. The proposed system should be evaluated for this home and its ductwork, not selected only from the capacity of the old unit. Elmhurst manages permit applications and inspection appointments through the City’s Citizen Self-Service Portal. Ask about the steps relevant to the proposed installation before approving work. The City’s process is linked in the local information below.