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Best heating and air conditioning pros near Frankfort, IL

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TRUSTED BY FRANKFORT, IL HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon876
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Frankfort - Updated Nov 2026

Avatar for Porterhouse Heating & Cooling
Porterhouse Heating & Cooling
4.8(
218
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Repair+16 more

Serving Frankfort, IL and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Porterhouse Heating and Cooling was very professional and knowledgeable on the service provided. I used them to install my air conditioner unit. Eventhough, the unit was not my issue, they still came out and was able to find the issue and fix it. They were friendly, professional, and reasonably priced. I will definitely use again for any of my HVAC concerns."
Work truck
Certification
Business card
Response time9 hrs
17 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for TR Miller Heating, Cooling, Plumbing and Electrical
TR Miller Heating, Cooling, Plumbing and Electrical
4.5(
112
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+47 more

Serving Frankfort, IL and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"We were having issues with our current furnace and decided to purchase new equipment versus putting repair money into an obsolete one. Due to the unreliability of the old unit, we wanted the new furnace/AC installed before we went on vacation.  They arrived on time, and completed the work in the time frame promised. All the work was done to the highest quality, and exactly as promised. This work was done on a cold day, and with over a foot of snow around the house, including around the old air conditioner. With the cold temps, we were very happy the total job was done in about 6 hours. The equipment is working extremely well. TR Miller took away all the old equipment, and did a good job of explaining the operation of the new furnace, thermostat, humidifier, and air cleaner. I would highly recommend this company for any heating and cooling work.
"
Additional Photos
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Additional Photos
Additional Photos
Additional Photos

+1

5 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for Regional Plumbing Heating & Air
Regional Plumbing Heating & Air
5.0(
15
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+47 more

Serving Frankfort, IL and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

We are family owned and operated. We service all brands, makes and models. From furnace and water heater repair and replacements, all the way to a leaking kitchen faucet or bathroom toilet. One call REALLY does it all. Faucets, toilets, sinks, drain rodding, water heaters, boilers, furnaces, air conditioners and humidifiers. New construction to radiant heat. You know you called the pros the first time. Licensed, bonded and insured, we offer easy approval and affordable financing as well!

16 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for United Heating and Air Conditioning, Inc.
United Heating and Air Conditioning, Inc.
4.4(
224
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairElectrical Baseboard or Wall Heater - Install+5 more

Serving Frankfort, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"Francisco of United Heating and Air Conditioning is the greatest, and I will hire him again happily and hope to have him service my system yearly going forward. He came today as promised and found that my thermostat only needed batteries, but my system was otherwise fine. He is very good and extremely honest and informative."
INSTALLATIONS
INSTALLATIONS
INSTALLATIONS
INSTALLATIONS
INSTALLATIONS

+25

Response time7 hrs
Response rate96%
2 neighbors recently requested a quote
Avatar for AWE Air Water Energy
AWE Air Water Energy
4.7(
588
)
Gas Furnace / Forced Air Heating System - InstallDuctless Mini-split A/C - Install or ReplaceGas Furnace / Forced Air Heating System - Repair+2 more

Serving Frankfort, IL and surrounding areas

Approved (Corporate)

In business since 1911

Free estimates

Emergency services offered

"AWE promptly responded to my work request and kept me informed about my appointment status. Peter came to perform the work. He was very thorough and even discovered that the HVAC contractor on our new home installed 2 furnaces: a current year model as well as a prior year model that was more prone to breakdowns. Provided great information and would definitely hire again. Thanks!"
Owner Ray Grimm
We're the ones with the yellow trucks, and cars, too!
Expert service keeps your home healthy
Solar Power
Regular Maintenance

+10

10 neighbors recently requested a quote
Recommended by92%of homeowners
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Showing 1-10 of 529
Heating and Air Conditioning FAQs, answered by experts

A blockage in the ductwork may prevent air from flowing through the vent. If some rooms in your home are very hot or cold and another isn't, that can be a sign that a vent is blocked. Another sign of a blockage is a buildup of dirt or dust around the vent. In either case, a duct installer or cleaning service can investigate the issue for you and recommend a course of action.

If the air coming from your AC unit is cool but never quite cold, there are a few reasons this might be happening. For starters, it could signal that your refrigerant levels are low. If there are no other indications of this particular issue, like hissing noises or frozen refrigerant lines, anything from dirty filters to damaged condenser or evaporator coils could be responsible for the problem.

Florida rooms can have heat or air conditioning, although not all do. These rooms can be added to the existing HVAC system or use a mini-split system, or they may just use a ceiling fan or the breeze from the windows for cooling. Florida rooms with air conditioning often have glass windows to keep the cool inside instead of just mesh screens.

Swamp coolers cost approximately 50 percent less to install than central air conditioners and cost less to run. Operation costs depend on the size of the unit and home, your climate, utility rates in your area, and the system’s efficiency. Swamp coolers use 15 to 35 percent less power than air conditioners.

Setting your AC unit to 78 degrees can, indeed, help you save energy. In fact, according to experts, every degree you turn the unit up could save you between 1% and 3% on your energy bills. That said, turning your unit off entirely while you’re out might actually be less efficient than keeping it on at a higher temperature. Why? The unit will need to work extra hard to cool the house back off again after all those hot hours. 

The Frankfort, IL homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.