When the Weather’s at its Worst. We’re at our Best.

Air Conditioning Repair in Libertyville & Lake County, IL

AC Not Cooling?
We'll Get It Running Again.

Common AC Problems We Repair

Here’s what we see most often across Lake County and the North Shore, and what’s usually behind it.

Blowing warm air. Usually a refrigerant leak, failed capacitor, dirty condenser coil, or a compressor that won’t engage.

Won’t turn on. Often a tripped breaker, blown capacitor, or a float switch that shut the unit down after the drain backed up.

Ice on the coils or refrigerant line. Low refrigerant or restricted airflow. Shut the system off and let it thaw, running it iced over can destroy the compressor.

Short cycling. Switching on and off every few minutes without finishing a cycle. Burns electricity and wears out the compressor early.

Loud or unusual noises. Screeching means a failing blower bearing, grinding means metal on metal, hissing points to a refrigerant leak.

Water pooling around the indoor unit. Nearly always a clogged condensate drain or cracked drain pan. Cheap to fix, expensive to ignore.

Weak airflow. A dirty filter is the easy answer, but leaking ducts and a failing blower motor look the same from the vent.

Burning or musty odors. Musty usually means mold in the drain pan or ducts. A burning smell means kill the breaker and call us now, that’s electrical.

We repair every major brand, whether or not we installed it. If a repair truly doesn’t pencil out, we’ll show you the numbers and let you decide.

Technician repairing furnace with a screwdriver
Technician repairing heating and cooling vent

Schedule Your Appointment

Thornton Provides:

Guardian Home Comfort Protection Program Logo

Become a Member: Guardian Home Comfort Protection Program

As a member, you’ll enjoy benefits like matching labor and parts warranties on new equipment installed by Thornton Heating Service, Inc. Stay comfortable, save money, and enjoy peace of mind.

New Air Conditioner Installations for Your Home

Want to Conserve Energy and Save Money?

As much as half of the energy used in your home goes to cooling and heating. New residential cooling systems are designed to provide you with high-efficiency air conditioning. Since your comfort system is most likely the single biggest energy use in your home, properly designed and installed cooling will have the most significant impact on your monthly utility costs.

Looking at Upgrading or Replacing Your Existing System?

Here’s why you should upgrade now. Some of the ways a poorly functioning system can impact you and your home include:

4 Reasons Why All Equipment and Labor Should Be Covered by An Extended Warranty:

Extended warranties help you manage your ongoing costs for greater long-term savings. Since you use your system 24/7 all year round, it’s a valuable way to maintain long-term performance.

Schedule Your Appointment

From heating to cooling and beyond, get reliable HVAC services from Thornton Heating. Book your appointment today!