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TRUSTED BY PRINCETON, NC HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon149
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Princeton

Avatar for Carolina Comfort Air Inc
Carolina Comfort Air Inc
4.7(
270
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallDucts & Vents - Install or Replace+10 more

Serving Princeton, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Emergency services offered

"Tracy and Darren are excellent workmen for a great value. We had the best experience with Carolina Comfort Air Inc with these two workmen replaced our HVAC. Our response time was excellent and the job was completed within 24 hours. Tracy was very knowledgeable and teachable about our new HVAC. Definitely, would recommend them to others."
Every great HVAC install starts with a solid plan. 📍🛠
Here’s a behind-the-scenes look at one of our walkthroughs—because comfort starts long before the system’s running.
From classroom to career path! 🚀
We love helping students connect the dots between what they learn and where it can take them in the real world.
We’re not just hiring—we’re building careers. 🔧📋
Thanks to everyone who stopped by our booth to learn more about joining the coolest team in HVAC!
Fore the love of HVAC—and a little friendly competition ⛳️
Our Carolina Comfort Air crew hit the greens for a great cause and even better camaraderie.
Our team had a blast showing future HVAC pros how systems work at this outdoor demo. Hands-on learning = lasting impact!

+50

Response time1 day
Response rate100%
31 neighbors recently requested a quote
Avatar for Air Quality Concepts
Air Quality Concepts
4.9(
260
)
Air Ducts & Vents - Clean

Serving Princeton, NC and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"Ducts were cleaned as we contracted for. When they finished the HVAC ducts they said they would do the dryer vent as a complimentary service. I told them I had recently cleaned it and they would probably not get much lint out of the vent. I was amazed at all they got out and it was at no additional charge."
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+6

Response time7 hrs
5 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Cardinal Mechanical NC, LLC
Cardinal Mechanical NC, LLC
5.0(
8
)
Central A/C - Service or RepairCentral Air Cleaner - Repair or ServiceElectric Furnace / Forced Air Heating System - Repair+10 more

Serving Princeton, NC and surrounding areas

Approved

In business since 2018

Emergency services offered

Warranties offered

"On site within 2 hours of us calling. Very fast, professional, and affordable. The large HVAC company in our area was a 4 day wait, $125 just for diagnostics, and we have had repeated issues since they installed the units 2 years ago. Cardinal Mechanical was the opposite experience in every way."
Response time3 hrs
Response rate93%
Recommended by100%of homeowners
NuBlue Electric, Plumbing & Air
5.0(
5
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+30 more

Serving Princeton, NC and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

NuBlue Air serves all of the Lake Norman region's needs. Our team of expert technicians specialize in residential hvac repairs and installations such as ac units, furnaces, indoor air quality products, vent/duct cleaning, and much more. We are your HVAC technicians of choice. NuBlue Electric Plumbing & Air is Redefining Service Excellence in the Lake Norman region! \n\nHave an Electrical OR Plumbing OR Air issue? Our NuBlue team can help with those! A one-stop-shop, the NuBlue team is able to take care of all Electric, Plumbing, and Air needs.\n\nVisit our website for coupons and specials!

11 neighbors recently requested a quote
Avatar for UPKEEPER SERVICES INC
UPKEEPER SERVICES INC
5.0(
8
)
Air Ducts & Vents - Clean

Serving Princeton, NC and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"Mr. Dixon was very professional. He got to our iob quickly. He did a very good and thorough job. He went above and beyond and even helped us remove an old refrigerator."
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+2

Response time10 hrs
5 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for NC Fresh Air Solutions
NC Fresh Air Solutions
4.7(
19
)
Air Ducts & Vents - Clean

Serving Princeton, NC and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Shonn the owner, was very professional! He did an excellent job on cleaning our vents and duct work. I would highly recommend this company. Very meticulous and you would never know they were here. Nothing to clean up when they were done."
Skyscraper signs
Skyscraper signs
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+442

Response time1 day
Response rate92%
47 neighbors recently requested a quote
Avatar for JR Electrical & General Service, Inc.
JR Electrical & General Service, Inc.
4.8(
7
)
Thermostat - Install or Replace

Serving Princeton, NC and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

Here at, JR Electrical & General Service, Inc., we sustain our business on quality and integrity. We are experts in our trade and our commitment to quality from beginning to end of your project. We look forward to earning your business. Call us anytime with any questions you may have. Thanks for your time and have a great day.

Response time2 days
Recommended by100%of homeowners
Avatar for Aznag Pro Heating & Cooling LLC
Aznag Pro Heating & Cooling LLC
5.0(
3
)
Thermostat - Repair or ReprogramCentral Air Cleaner - Repair or ServiceElectric Furnace / Forced Air Heating System - Repair+7 more

Serving Princeton, NC and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Lahcen is an excellent HVAC technician! He quickly diagnosed the issue with my AC unit and clearly explained what was causing an error in my AC unit and while he was diagnosing the main issue, he checked my filter he found out it was upside down. Professional, knowledgeable, and honest. I highly recommend him to anyone needing HVAC service."
5 neighbors recently requested a quote
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Heating and Air Conditioning questions, answered by experts

A common HVAC rule is that for every 500 to 600 square feet of living space, you need 1 ton of heating or cooling capacity. Now that you know this common rule, you also need to know that it isn’t very accurate, and a dedicated pro wouldn’t use it for your home. If you talk to a pro who won’t or can’t perform a proper Manual J calculation, consider hiring someone more thorough.

You can buy R-22 refrigerant for your home air-conditioning system through your local AC repair specialist, who can also refill your R-22 system as needed. You may find that the cost of R-22 has gone up due to shortages as the EPA banned this refrigerant. Ask your pro to inspect your system for any leaks or issues.

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. 

For the most part, you should leave your AC fan in “auto” mode so that it only runs during a heating or cooling cycle. Keeping it in this position uses less energy, which equals lower utility bills. However, there are some situations where it’s better to leave your AC fan on, including if you have allergies or there are lots of people in your home.

The best way to compare HVAC quotes is getting a few detailed quotes from local companies with good reputations. Then, go over the quotes line by line. Protect yourself by insisting on in-person estimates that include equipment manufacturer names, model numbers, SEER ratings, amounts and numbers of materials, details of warranties on equipment and labor, and other specifics. 

Knowing the exact equipment and materials is the only way that you can fairly compare quotes. Quotes that are much lower than others can be a sign that the company isn’t providing the best quality service or materials.

The Princeton, NC 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.