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Best heating and air conditioning pros near Princeton, NJ

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TRUSTED BY PRINCETON, NJ HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon426
    Verified heating and air conditioning services reviews

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

Avatar for Climate Mechanics LLC
Climate Mechanics LLC
4.9(
53
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+47 more

Serving Princeton, NJ and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"We found CLIMATE MECHANICS from their stellar reviews while searching for a knowledgeable and competent HVAC company. For years, we were dealing with a condensation problem with our LG mini split air conditioner, and no one could find the source of the problem. We can honestly say that we've never experienced a company like CLIMATE MECHANICS so committed to making things right. Nate, the awesome climate mechanic that came to our home, and Robert, the owner of the company, could understandably have walked away because they did not install the system and were not responsible for the problem. Nate worked for hours trying to locate the problem. In the end, after so many years of leaking, CLIMATE MECHANICS went above and beyond and resolved our ongoing problem. Toni, their wonderful contact person, told us repeatedly that Robert just wanted us to be happy in the end. And we are. Totally. Thank you Robert, Nate and Toni."
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+4

Response time1 day
10 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for East Coast Comfort Inc
East Coast Comfort Inc
4.9(
579
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or Replace+33 more

Serving Princeton, NJ and surrounding areas

Approved

In business since 2006

Emergency services offered

Credit card accepted

"ECC installed a new condenser and coil. Tony, who is one of the owners, did the job himself with two assistants. He was very personable, respectful, and thorough in his explanation of the work. The work was done in a timely and efficient manner, the work zone was left in clean condition and the installation itself appears to be very neat and professional. My strong impression is that Tony and his co-owner, Ed, are two highly experienced and professional craftsmen in this business who take pride in their work and I appreciated having the actual owners, not salesmen and crews, developing the proposal and performing the installation. The entire experience, beginning with Lisa at the office, Ed, who developed the proposal, and finally with Tony and his team, was excellent and I will certainly hope to engage them for future HVAC needs."
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Response time2 days
Response rate99%
5 neighbors recently requested a quote
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 Princeton, 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 Arctic Air Conditioning
Arctic Air Conditioning
4.8(
867
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+12 more

Serving Princeton, NJ and surrounding areas

Approved (Corporate)

In business since 1977

Free estimates

Emergency services offered

"The service tech performed the work in a total professional way. Performed a complete analysis of my furnace to ensure all was well. Was extremely friendly and took the time to respond to all my questions. I recommend arctic air to anyone seeking hvac work!"
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+6

14 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for American Air Duct Cleaning & Services
American Air Duct Cleaning & Services
5.0(
61
)
Air Ducts & Vents - Clean

Serving Princeton, NJ and surrounding areas

Approved

In business since 2003

Free estimates

Credit card accepted

"Both Brian and Brian arrived at my home on time. They started with the air duct cleaning, and since my house has centralized heating and air conditioning, they started with the HVAC unit. In addition to their punctuality, I was impressed by the quality and speed of their work. For instance, even though the estimated time frame for the work was 5 hours, the actual length to do this work turned out to be less than 3 hours. In addition, they were very knowledgeable, thorough, helpful, and professional. I would highly consider hiring them for this type of work again."
Dryer vent cleaning
Duct cleaning
Dryer vent cleaning
Duct cleaning
Duct cleaning

+15

Response time4 days
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Raynor Services - HVAC
Raynor Services - HVAC
4.5(
162
)
Air Ducts & Vents - CleanCentral A/C - InstallCentral A/C - Service or Repair+2 more

Serving Princeton, NJ and surrounding areas

Approved

In business since 1993

Free estimates

Credit card accepted

In 1993, Tom Raynor began taking on electrical construction and service jobs across southern New Jersey. With just one assistant and one beat-up truck, Tom crisscrossed the state, building a reputation for his small outfit as one that offered professional, hands-on service and reliable, high-quality results. By 1994, it was official—Raynor Services was born! \n \nSince then, that red pick-up has been upgraded to a fleet of ten fully stocked trucks. We are now a “one-stop shop” service company, specializing in electric, heating, cooling, and generator services. Raynor Services has never lost the spirit of professional, hands-on service that it was founded on. Family-owned and operated, we combine small-business service with big-business expertise. \n \nRaynor technicians are among the best in the industry. Each must complete a rigorous hiring process – including a background check, a drug test, and an HVAC or electrical proficiency examination.

Raynor Tech Homeowner
Raynor Tech Homeowner
Raynor Tech Homeowner
Raynor Tech Homeowner
Raynor Tech Homeowner

+19

Recommended by86%of homeowners
Avatar for Petro Home Services
Petro Home Services
4.4(
1,786
)
Central A/C - InstallOil Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+47 more

Serving Princeton, NJ and surrounding areas

Approved (Corporate)

In business since 1903

Emergency services offered

Warranties offered

With over 100 years experience, we know how to keep you comfortable, safe and help you save on energy costs. Our local 24/7 customer service and support means automatic heating oil deliveries and our service response is always fast. We never run out of heating oil plus our pricing and payment plans are designed to help you manage your costs all year round. Experience the Petro difference today!

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Response time6 days
Response rate100%
18 neighbors recently requested a quote
F.S. Plumbing, Heating, & General Contracting, Inc.
4.6(
145
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+6 more

Serving Princeton, NJ and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"When we were short on hot water and our furnace was on the way out, I contacted the The SaveGreen Project. They provided a list of contractors, and after numerous calls finally got through to a contractor that understood the program. Greg thoroughly explained the process, and even walked me the process, guiding us through from initial application process to final walkthrough. When Greg came out to assess our situation, he was very professional and extremely honest. He offers the best prices and uses high quality brands. His experience speaks for itself, he was the only contractor who told us we can install a tankless water heater. Additionally, he was able to help us with our failing furnace and provided one of the top systems for an extremely reasonable price. His staff is professional and clean. They put cover grip cloths to protect the floors, and were very careful when handling the equipment. Before installing the furnace and air purifier he performed a full duct cleaning. His staff was nothing short of excellent; they team showed up on time, worked efficiently, and the results speak for themselves. The level of communication speaks for itself, any questions or concerns we had Greg took the time to address and ensure we were completely satisfied. For anyone in need of plumbing, electrical work, or for any HVAC service, I highly recommend Greg and his team."
Rinnai Recirculation 95% efficient Tankless
Another Old tank style heater sent to the junkyard
Response time1 day
Recommended by83%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

If possible, avoid placing furniture in front of a return air vent. A blocked air vent can cause your HVAC system to use more energy, which in turn can lower the life span of your unit and raise your energy bill. Furniture can also trap hot or cold air, damaging your furniture or appliances. 

Professional duct installers suggest leaving between six and 12 inches of space in front of an air return vent. If you must place furniture in front of a return air vent, try to aim for putting furniture over a floor vent instead of in front of a wall vent, and avoid draping curtains over any vent system.

Some HVAC systems tend to use R410A refrigerant, although if you have an older model it may be using R22. R22 is banned due to its harmful environmental and health impacts, and it is a sign that your AC unit is old enough to consider a replacement and the significant efficiency gains that could come with it.

Many HVAC manufacturers provide warranties that encompass the cost of a new compressor, with durations ranging from 5 to 10 years, depending on the brand. These warranties cover critical components such as the compressor, condenser, connecting tubing, evaporator, and refrigerant charge. Moreover, they often include the necessary labor for replacement or repairs. Keep in mind that premium-brand compressors may offer lifetime warranty options. It's essential to note that these warranties rarely cover labor costs.

Not if you have a standard unit. Because portable AC units actually work to dehumidify the room, you’ll likely need to drain the unit from time to time—but you won’t have to put water into it. There is, however, another type of air conditioner called a swamp cooler that requires water to operate. If you have a swamp cooler, you may need to fill a reservoir with water and potentially ice. But a swamp cooler is different from a standard portable AC unit.

Yes, a dirty air filter can cause a higher electric bill. That’s because clogged filters make it harder for air to flow through your HVAC system, which forces it to work harder and use more energy. According to the U.S. Department of Energy, replacing dirty filters can save you between 5% and 15% in utility costs.

The Princeton, 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.