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Best heating and air conditioning pros near Fairfield, NJ

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TRUSTED BY FAIRFIELD, NJ HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon332
    Verified heating and air conditioning services reviews

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

Air Temp Service Company, Inc.
4.2(
143
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceGas Furnace / Forced Air Heating System - Install+5 more

Serving Fairfield, NJ and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"Air Temp worked with me on my request to coordinate the replacement of my furnace and water heater with a minor home repair job (flooring) over the course of two days. The two gentlemen who did the job were courteous, efficient, and professional. I was charged a fair price, and I was pleased with the results."
Weil Mclane bolier
 Rheem hot air furnace
 Buderus Boiler & ht wtr
 15 zone radiant heat
 Rheem A/C install

+1

Response time1 day
23 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Celestial  Air HVAC, LLC
Celestial Air HVAC, LLC
4.3(
82
)
Central A/C - Service or Repair

Serving Fairfield, NJ and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"Anthony the service tech was great, he took time to explain everything to my mom and was super courteous. Who ever was on the service desk and took my mom's phone call and walked her through the steps on how to set up the fan control was super patient and very pleasant do deal with. We will definitely be using you guys for all our HVAC work in the future."
Williamson Oil Boiler
Unit Replacements
Hier Oil Furnace
Unit Replacements
York Gas Furnace

+10

Response time6 hrs
Response rate85%
5 neighbors recently requested a quote
Avatar for Ray's HVAC
Ray's HVAC
4.7(
268
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairGas Boiler or Radiator Heating System - Repair+14 more

Serving Fairfield, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"⭐⭐⭐⭐⭐ Excellent service! Ray responded quickly, diagnosed the issue with my thermostat, and had it fixed in no time. He was professional, knowledgeable, and efficient throughout the entire process. I really appreciate his prompt response and quality work. I highly recommend Ray’s HVAC Service to anyone looking for reliable and dependable HVAC service!"
New heating system with steam humidifier
Expert equipment rigging
Packaged Trane high efficiency equipment
Emergency replacements
Piping

+1

Response time6 hrs
Response rate89%
110 neighbors recently requested a quote
Avatar for Speer Air
Speer Air
4.6(
165
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+7 more

Serving Fairfield, NJ and surrounding areas

Approved

In business since 1958

Free estimates

Emergency services offered

"Speer Air just completed a complete overhaul of my existing HVAC including an upgrade of part of our system. The entire experience from initial sales visit to completion was great. Throughout the installation, the team was friendly, always available to answer a question, clean and respectful of my 3 young children (making sure nothing was left behind or any debris that could hurt them). System is operational and very satisfied. Highly recommend them."
Residential Attic Install
Commercial Multi Unit Install
Guardian Series
Response time2 days
Response rate100%
6 neighbors recently requested a quote
Avatar for Phase II Development, LLC
Phase II Development, LLC
4.5(
47
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceGas Furnace / Forced Air Heating System - Install+7 more

Serving Fairfield, NJ and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"My tenant reported an issue with the HVAC on a Sunday. I called Robert @ Phase II at noon on a Sunday and he had someone over to resolve the issue within a couple of hours. Great customer service. I will definitely use Phase II in the future. Thank you!"
Furnace Heaating Repair
Commercial Ice Machine
Commercial Ice Machine Service
Commercial Ice Machine Cleaning
Deli Case Repair

+12

Response time3 hrs
16 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Dawson Mechanical Contracting
Dawson Mechanical Contracting
4.8(
136
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+29 more

Serving Fairfield, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1988

Free estimates

Emergency services offered

"We recently had the pleasure of hiring Dawson Mechanical to have a new Navien tankless water heater installed. This was a little more than a straightforward job since the water heater was being relocated from a utility closet to the garage which was about 20 feet away. From the time I made the first call to Dawson, I had a good feeling about this company. Dave came over within a few days on a Saturday to look the job over and give me an estimate. He is very knowledgeable and took the time to answer any questions we had. When the day came for the installation, a crew of 3 workmen arrived around 9:00 AM and did not stop until the job was finished around 5:00 PM. They did an excellent job, were very good about keeping everything clean and neat, and the workmanship was top notch. In short, we were very happy with everything and would not hesitate to use Dawson for our future plumbing/HVAC needs."
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+20

Response time7 hrs
Response rate99%
Recommended by92%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

If you have central air conditioning, it’s fine to run your AC all day if that’s what you want—as long as the AC unit is in good condition. But if your AC runs constantly when you don’t want it to, there may be a problem with your system (like the ones we’ve mentioned above). Window AC units and wall air conditioners aren’t as powerful as central AC, so you should only run those kinds of air conditioners for eight to 12 hours at a time.

Here’s how AC professionals will clean your AC coils:

  1. Unplug the AC unit or turn off the breaker to the unit in your circuit breaker box.

  2. Remove the faceplate.

  3. Spray a vacuum hose attachment or compressed air can to remove debris, dust, dirt, and grime.

  4. Use a soft-bristled fin comb to remove stubborn caked-on debris.

  5. Use the vacuum hose to suck up any extra debris.

  6. Take a coil-safe cleaning solution and spray it onto the coils. Try to choose a no-rinse solution.

  7. Let the solution sit for at least 15 minutes.

  8. Gently wipe away loosened grime and debris with a microfiber cloth.

  9. Reattach the faceplate, plug in your AC system, or turn the breaker back on.

If your AC condenser is nearing the end of its life, it might leak fluid or make loud or unusual sounds (like grinding or hissing). You might also notice that it isn’t heating your home as evenly or effectively as it once did. Also, an aging condenser will have to work harder to cool your home, which may force it to use more power and drive up your utility bills.

Most HVAC companies recommend against setting your AC below 70 as it could freeze up the system and cause more problems. Regardless of how hot it is outside, there is generally a 20 degree difference between the outside and inside temperatures, so even if it’s 100 degrees outside, your AC will likely not be able to cool your home to 70 degrees.

Yes, government incentives and programs are available to encourage energy-efficient upgrades in many regions. These incentives may include tax credits, rebates, grants, and low-interest loans for homeowners who invest in energy-efficient improvements such as HVAC system upgrades, insulation, and efficient windows. The availability and specific details of these incentives can vary by location, so check with your local government or utility company to explore your options.

The Fairfield, NJ 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.