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Best heating and air conditioning pros near Dunellen, NJ

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    Average homeowner rating
  • Verified reviews icon648
    Verified heating and air conditioning services reviews

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

Avatar for LIV AIR
LIV AIR
5.0(
14
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or Replace+22 more

Serving Dunellen, NJ and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Staff is very friendly and helpful and well-trained professionals. They serviced my appliances and solved my issues on the same day whereas other service companies would not. Liv Air is the best HVAC service provider and I highly recommend their services."
Heating & A/C Project
Heating and Air Conditioning Project
Heating and Air Conditioning Project
Heating & A/C Project
Heating & A/C Project

+46

Response time1 day
Response rate100%
2 neighbors recently requested a quote
Avatar for Challenger Heating & Air Condition Corporation
Challenger Heating & Air Condition Corporation
4.8(
454
)
Central A/C - Service or RepairGas Boiler or Radiator Heating System - RepairGas Furnace / Forced Air Heating System - Repair+3 more

Serving Dunellen, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"I spoke with Jorge about a gas leak coming from my furnace. He was so honest with me and recommended that I call the utility company to come fix it instead. PSEG came within an hour and fixed it for free. I had another company come out yesterday and they told me that I needed to change the gas value, so Jorge was able to save me hundreds of dollars. If I ever have any future HVAC issues, I will definitely trust Challenger to do the right thing and not scam me. Thank you so much!!"
Furnace & water tank
Furnace & water tank
Coil Replacement
Coil Replacement
Boiler replacements

+11

Response time3 hrs
44 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Speer Air
Speer Air
4.6(
165
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+7 more

Serving Dunellen, 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%
5 neighbors recently requested a quote
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 Dunellen, 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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

Response time7 hrs
Response rate99%
Recommended by92%of homeowners
Avatar for Homelux, LLC
Homelux, LLC
5.0(
39
)
Air Ducts & Vents - Clean

Serving Dunellen, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"Thanks Mark for cleaning my dryer, air vents and ducts. You were very respectful of my house, thorough and explains to me what you were doing and helping me understand what you’re trying to accomplish. I think you worked above and beyond. You even made a video because obviously I cannot be watching you and be at the attic where my HVAC unit. And I thank you for that- you are trustworthy!"
Air Duct & Vent Cleaning
Air Duct & Vent Cleaning
Air Duct & Vent Cleaning
Air Duct & Vent Cleaning
Professional Carpet

+19

Response time8 hrs
Response rate100%
6 neighbors recently requested a quote
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Heating and Air Conditioning FAQs, answered by experts

You need to know the square footage of your home first. Multiply that number by 20, which will get you the BTUs (British Thermal Units) needed to cool your home efficiently. Homes up to 1,000 square feet usually need a 1.5-ton unit; homes 1,000 to 1,200 square feet usually need a 1.75-ton unit, and homes 1,200 to 1,400 square feet usually need a 1.9-ton unit. Talk to a local pro for more specific advice on your home. 

It depends on the specifics of your warranty. The motor is likely not covered if you’re working with a limited warranty. The same goes for other components like the compressor and evaporator coil. Some extended warranties will cover the blower and fan motor, so read the fine print before signing up. Additionally, the manufacturer may offer a warranty for the parts, including the motor, though there’s likely to be a strict time limit for this coverage.

Many HVAC companies offer free quotes and free estimates for repairs and new HVAC systems. Others offer low-cost quotes or apply the cost of the estimates or diagnostics to your final bill if you hire them. Be aware that some companies advertise free HVAC quotes and recoup the costs by charging more for their services. Free HVAC quotes are never truly free—they cost the company time and effort—so be a good customer. Also understand that you may end up paying for free quotes in another way if you don’t hire a reputable company.

To keep a window air conditioner in good working order, you should clean the filter regularly, inspect the seals, and store the unit properly during the off-season.

This depends on the extent of the freezing. Some ACs only need an hour or two to thaw out, but others may need a full day to completely unfreeze. Once you turn off the system to let it unfreeze, check it periodically to make sure the drain pan doesn’t overflow. When you turn the system back on, keep an eye on it to ensure it doesn’t start freezing again.

The Dunellen, 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.