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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

153 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for One Choice Mechanical
One Choice Mechanical
4.7(
127
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric 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%
11 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

+14

37 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 - InstallGas Furnace / Forced Air Heating System - InstallDucts & Vents - Install or Replace+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
12 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 - InstallElectric Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or Replace+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

13 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

+6

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

It is normal for the attic to be hotter than the rest of the house in the summer, but only by about 10 or 20 degrees. Attics that aren’t properly insulated or ventilated can reach temperatures of 130 degrees or more which can cause damage to the home’s structure, including the roof, wood framing, and HVAC system.

No. Your furnace does not run your air conditioner. Both units use the same system of ductwork to move conditioned air throughout your home, but you can have a furnace without having an air conditioner and vice versa. Furnaces are only for heating your home. You can buy a system that does both, however, like a split system or a heat pump (yes, heat pumps cool, too).

Most HVAC companies charge a flat service call fee of between $75 and $150, which includes traveling to your home and inspecting your system to find the underlying problem. Keep in mind that these prices only include diagnostics and the actual repairs will usually be billed separately. If you’re calling for routine service, the service call will be included in your inspection and tune-up, with the total sitting around $150. Your prices could be a little higher if you have a very large home with multiple condensers and air handlers, as inspections and servicing take longer.

A few drips here and there should not be cause for concern, but if your unit is leaking a large amount of water, then it’s advised that you stop using it until the problem is identified and a solution is determined. The more you use it during a leak, the more issues it will cause.

You should plan to change your AC unit's filter every one to three months, depending on the manufacturer's recommendations. You should also clean the coils at least once per year, but if you have pets or someone in your household has allergies, you might need to clean them more often. Fortunately, many pros will clean the coils and change the filter for you during an inspection, which you should schedule once or twice per year.

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.