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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon1k+
    Verified heating and air conditioning services reviews

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

Avatar for Comfort Louisville HVAC
Comfort Louisville HVAC
4.5(
114
)
Central A/C - InstallCentral A/C - Service or RepairGas Furnace / Forced Air Heating System - Install+5 more

Serving Northfield, KY and surrounding areas

Approved (Corporate)

In business since 2001

Free estimates

Emergency services offered

"My a/c hadn't worked for two days, it was 90 degrees in the house. our go to hvac company is comfort heating and air, we called them, and a gentlemen named Taylor Burton showed up and promptly got to work. He was able to fix the issue within 10 minutes. He told us what was wrong, and even changed the filter to the unit. I highly recommend this company. I've used them before for my hvac needs, and both times they were able to fix whatever problem I had. 5/5 stars."
Comfort Tech
Technicians
HVAC
HVAC Tech
HVAC Tech

+1

141 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for One Choice Mechanical
One Choice Mechanical
4.7(
127
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+47 more

Serving Northfield, KY and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"Extremely professional and thorough. I was delighted with the service. Two other HVAC companies had tried and failed to fix the problem I was having. Lucas quickly identified the problem and solved it with minimal cost. I would very highly recommend this company. NOTE -- cost of service represents only my out of pocket cost through my home warranty service.
"
Lucas Parker -Owner
Response time1 day
Response rate100%
8 neighbors recently requested a quote
Avatar for Aire Serv of Louisville
Aire Serv of Louisville
4.7(
559
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+44 more

Serving Northfield, KY and surrounding areas

Approved

Super Service Award Winner

In business since 1977

Free estimates

Emergency services offered

"We had recently purchased a home and had reason to be believe it had been some time since the HVAC was serviced.  Aire Serv came out and performed a cleaning and inspection of the system.  The technician was punctual and polite.  He did a good job and fixed a minor leak we had in the condensation line. 



They offered some recommendations for improvements, but did not try to upsell us on anything.



We will be using Aire Serv again.
"
Additional Photos
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Additional Photos
Additional Photos
Additional Photos

+14

43 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Comfort Zone Heating & Air
Comfort Zone Heating & Air
4.6(
19
)
Central A/C - InstallDucts & Vents - Install or ReplaceElectric Furnace / Forced Air Heating System - Repair+47 more

Serving Northfield, KY and surrounding areas

Approved

In business since 1981

Free estimates

Emergency services offered

"This is a great company and I am glad they are around. Extremely professional, detail oriented, hard working and honest. I needed to replace my ancient HVAC system and I was fortunate to have had this company help me with that. I ended up with a couple of bids for the same brand and model and Comfort Zone gave me an honest price which was thousands less than a competitor (Again, same brand and model number). Equally important is that they know what they are doing and they do the job right unlike many of the less knowledgeable competitors. Honest, knowledgable, hard working, great to deal with! They have earned my business for sure."
Electrical Project
Additional Photos
Additional Photos
Additional Photos
Response time7 hrs
10 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Greenwell Plumbing Heating & Air
Greenwell Plumbing Heating & Air
4.4(
107
)
Central A/C - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+47 more

Serving Northfield, KY and surrounding areas

Approved (Corporate)

In business since 1994

Free estimates

Emergency services offered

"The office people were nice very and responsive. I needed installation in a hurry and they scheduled me promptly. The technician wasn't too friendly but he did the job. I had to ask alot of questions because he wasn't forthcoming with any information. Other than that I would definitely use them again. Since I am a member of The REMC, I didn't have to pay Greenwell anything, It was all done through my electric company.
"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

9 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Red White and Cool Heating and Air
Red White and Cool Heating and Air
5.0(
12
)
Gas Furnace / Forced Air Heating System - InstallCentral A/C - InstallElectric Furnace / Forced Air Heating System - Install+12 more

Serving Northfield, KY and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Red White and Cool Heating and Air LLC is our absolute go-to for our personal home and investment properties. They are incredibly quick to respond, and we fully trust and rely on them for all new HVAC installations and maintenance needs. We have used them numerous times and are always impressed by their high standard of work and straightforward honesty. We confidently recommend them to friends, and everyone has a great experience. Bailey is an exceptional, trustworthy technician who knows his craft. He never pressures you into unnecessary repairs, taking the time to explain the issue and provide fair options. On the administrative side, Cheyenne is a pleasure to work with. She is highly responsive, organized, and ensures the process runs seamlessly from scheduling to completion. It is refreshing to find a family-owned company that truly prioritizes integrity, fair pricing, and customer service. We highly recommend them!"
Ductless mini splits
Ductless mini splits
Ductless mini splits
Heatpump system
Heatpump system

+9

28 neighbors recently requested a quote
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Heating and Air Conditioning FAQs, answered by experts

Whether an HVAC damper should be open or closed depends on the season, the zone it controls, and the temperature in that zone. In the summer, open upstairs dampers and close lower-level dampers to get the most efficient cooling possible. In the winter, do the opposite. Cool air will naturally flow down to lower levels, while warm air will rise. This keeps your system from working harder and helps prevent common AC problems.

Your AC might not cool after a power outage because of a tripped circuit breaker, blown fuse, or damage to the compressor or capacitor. If you notice your AC not working after a power outage, in most cases, the breaker has tripped or the system has built-in brownout and blackout protection. Reboot the AC by turning it off at the thermostat, resetting the circuit breaker, and waiting 30 minutes to turn the AC on again. 

Winterizing can still help you save money on energy costs and help prepare your AC for its work next year when you turn it back on. We suggest planning for at least some maintenance, even if winters are mild in your area.

You can buy R-22 refrigerant for your home air-conditioning system through your local AC repair specialist, who can also refill your R-22 system as needed. You may find that the cost of R-22 has gone up due to shortages as the EPA banned this refrigerant. Ask your pro to inspect your system for any leaks or issues.

Yes, scorpions can enter a home through AC vents, especially if the system is not well-sealed. As excellent climbers, they can scale a home's exterior and squeeze through gaps as small as 1/16 of an inch. Scorpions are often attracted to the moisture around air conditioning ducts or seek cooler areas during hot weather, using vents as a pathway inside. They may slip through small openings where the duct meets the vent cover and travel within walls before emerging. To prevent this, inspect your vents, seal any gaps, and consider installing fine mesh screens.

The Northfield, KY 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.