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Quick answer #1 is CWJ Heating & Air Conditioning (4.9★, 827 reviews)
The best-rated HVAC contractors in Durham, NC are CWJ Heating & Air Conditioning (4.9★, 827 reviews), Alternative Aire Inc (4.9★, 1,022 reviews) and JD Service Now (4.9★, 5,798 reviews).
- 4.9★average rating
- 13,136Google reviews
- 3open 24/7
- 7hvac specialists
Checked · How we rank
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About this list
Looking for an HVAC contractor in Durham? Start with these 10. Ratings average 4.9 stars over 13,136 reviews, and the most-reviewed, JD Service Now, has 5,798 reviews.
Compare all 10 side by side
| # | Business | Rating | Reviews | 24/7 |
|---|---|---|---|---|
| 1 | CWJ Heating & Air Conditioning | 4.9 | 827 | No |
| 2 | Alternative Aire Inc | 4.9 | 1,022 | No |
| 3 | JD Service Now | 4.9 | 5,798 | No |
| 4 | Green Horizon One Hour Heating & Air Conditioning | 4.8 | 949 | No |
| 5 | Happy Home Services | 4.8 | 3,424 | Yes |
| 6 | Hay's Heating And Air Conditioning Inc | 4.8 | 492 | No |
| 7 | Air Innovations Heating and Cooling, LLC. | 4.9 | 169 | No |
| 8 | Sunny Heating and Air | 5.0 | 97 | No |
| 9 | All Weather Heating & Cooling Inc. | 4.8 | 275 | Yes |
| 10 | First RespondAir HVAC | 5.0 | 83 | Yes |
Before you hire an HVAC contractor
5 quick checks before you call.
- Check the license.
In North Carolina, look them up with the NC State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors.
- Ask for proof of insurance.
Liability insurance covers damage to your home if something goes wrong.
- Get 2 or 3 written quotes.
Compare what each one includes, not just the price.
- Don't pay everything upfront.
A deposit is normal. Pay the rest when the work is done.
- Read the newest reviews.
Recent reviews say more about the business today than old ones.
Questions people ask
Who is the best-rated HVAC contractor in Durham?
CWJ Heating & Air Conditioning ranks #1 with 4.9 stars from 827 reviews.
Which HVAC contractors in Durham are open 24 hours?
Happy Home Services, All Weather Heating & Cooling Inc. and First RespondAir HVAC are open 24 hours, 7 days a week.
Which HVAC contractor in Durham has the most reviews?
JD Service Now has the most, with 5,798 Google reviews and a 4.9 rating.
How do I check if an HVAC contractor in Durham is licensed?
Look them up with the NC State Board of Examiners of Plumbing, Heating and Fire Sprinkler Contractors at https://www.nclicensing.org/. Also ask for proof of insurance before work starts.
How is this list ranked?
We rank by Google star rating weighted by review count, so a 4.9 with 400 reviews beats a 5.0 with 8. HVAC specialists get a small edge over companies that also list other trades. Details were last checked Nov 2, 2026.