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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 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 No 1 Cleaners
No 1 Cleaners
4.8(
295
)
Air Ducts & Vents - Clean

Serving Princeton, NJ and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"I needed a whole house cleaning from the vents to the floors in the new home I bought. No. 1 provided all the services in one and they seemed reasonably priced. Vincent came on time and we went through all the things I wanted done in detail. He quoted me a price and he got to work. Many hours later, the house is amazingly clean and the dryer and HVAC unit is more efficient. The stains came out of the carpet and the tile was returned to original. The dust in the duct was also removed. In regards to the tile floor, I thought the grout was black, but after the cleaning it turned out that the original color was gray. Amazing! We also looked in the dryer vent and realized it had never been cleaned. I can't believe how much stuff came out of a short vent hose. I'm really glad I had it done. As to the professional who came to the house, Vincent was outstanding. He explained everything clearly, was very professional and did the work to the best of his abilities paying attention to detail. I couldn't have asked for more. I would definitely recommend No. 1 and Vincent to others who need the service."
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+13

Response time9 hrs
Response rate100%
16 neighbors recently requested a quote
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

Replacing both an AC and a furnace takes a full day on average, ranging from eight to 12 hours. The process involves removing the old units, installing the new ones, and ensuring all connections are properly made. If both systems are being replaced simultaneously, it can take longer than installing a furnace alone, so plan accordingly.

No, it's not safe to keep using your unit when it's frozen. Not only can running a frozen unit lead to damage, but it can also potentially overheat, making it a fire hazard. Therefore, it's always best to turn off the AC unit as soon as you notice any ice.

A calculation method that your HVAC contractor will use to ensure your system does what it's supposed to is measuring duct output, or its CFM. The calculation requires knowing the cross-sectional area of the ductwork and determining the air speed past any given point within it.

Your central A/C unit should be professionally serviced and inspected at least once a year to ensure it operates properly and efficiently. This is best done before the peak cooling season. A full-service inspection by a qualified pro will typically include checking safety components for issues like carbon monoxide leaks, verifying cooling components and coolant levels, and inspecting electrical parts like fuses and wiring. Regular servicing enhances efficiency, mitigates potential problems, and maintains optimal performance. Because AC systems contain hazardous refrigerant, professional handling is essential.

Air conditioners can stop working in the middle of the night for many reasons. Your local power grid might shut down late at night. Power surges can also trip your breakers if too much power is being used in the area at the time. If your AC is connected to a digital thermostat, it gets naturally cooler at night, so the outdoor temperature might dip below the automated setting to turn the cooling system off.

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.