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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 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 Carolina Comfort Air Inc
Carolina Comfort Air Inc
4.7(
271
)
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%
28 neighbors recently requested a quote
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
6 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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+447

Response time1 day
Response rate92%
57 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

It is normal for the attic to be hotter than the rest of the house in the summer, but only by about 10 or 20 degrees. Attics that aren’t properly insulated or ventilated can reach temperatures of 130 degrees or more which can cause damage to the home’s structure, including the roof, wood framing, and HVAC system.

High humidity, bad insulation, warmth from sunlight, and poor circulation are all reasons your home’s hotter inside than out. While this is what you want in the colder months, summer can become unbearable if this is a constant. Try to find the cause, but you need to remember that issues like this require a permanent fix (unless you want to bear down during the summer months).

Indications of an HVAC problem include inconsistent heating or cooling throughout your home, unpredictable temperature changes, or inadequate air flow from vents. Abnormal sounds such as grinding, banging, or hissing, and unpleasant smells like mustiness or burning are also potential warning signs. A rise in energy costs without an increase in usage may also imply decreased efficiency. An HVAC system that frequently cycles on and off or cannot maintain a stable temperature is malfunctioning.

Replacing an HVAC system does not always include new ductwork. The decision depends on the condition of your existing ducts. If they are in good shape, correctly sized for the new unit, and meet current standards, they can often be reused. However, if the ducts are damaged, poorly designed, or improperly sized, they will likely need to be replaced or upgraded to ensure the new system operates efficiently. An HVAC contractor will assess your ductwork and recommend the best course of action. Typically, ductwork is purchased separately, and a full replacement will add to the overall project cost.

The length of an AC cycle depends on the settings in your thermostat and the unit you have. Central AC doesn't constantly run at full blast the way that a window unit does. A cooling cycle in most homes is 15 to 20 minutes. Then, the unit stays off for seven to 10 minutes to circulate the cold air in the house before the cycle repeats. It should repeat two or three times per hour. A short cycle lasts less than 10 minutes and then turns off.

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.