10 Best in
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Quick answer #1 is Reliance Heating & Air Conditioning (5.0★, 1,027 reviews)
The best-rated HVAC contractors in Phoenix, AZ are Reliance Heating & Air Conditioning (5.0★, 1,027 reviews), Island Breeze Air Conditioning & Heating LLC (5.0★, 663 reviews) and Mountainside Air Conditioning Repair (5.0★, 649 reviews).
- 5.0★average rating
- 19,156Google reviews
- 6open 24/7
- 8hvac specialists
Checked · How we rank
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About this list
We compared HVAC contractors across Phoenix by star rating and review volume. These 10 average 5.0 stars across 19,156 Google reviews, and 6 of them are open 24 hours. 8 of them are open on weekends.
Compare all 10 side by side
| # | Business | Rating | Reviews | 24/7 |
|---|---|---|---|---|
| 1 | Reliance Heating & Air Conditioning | 5.0 | 1,027 | No |
| 2 | Island Breeze Air Conditioning & Heating LLC | 5.0 | 663 | No |
| 3 | Mountainside Air Conditioning Repair | 5.0 | 649 | Yes |
| 4 | One Hour Heating & Air Conditioning | 5.0 | 514 | Yes |
| 5 | L J Refrigeration Co Inc | 5.0 | 354 | No |
| 6 | Ideal Air Conditioning and Insulation | 4.9 | 1,550 | Yes |
| 7 | Legendary Energy | 5.0 | 262 | No |
| 8 | Day & Night Air Conditioning, Heating, & Plumbing | 4.9 | 9,878 | Yes |
| 9 | American Home Water & Air | 4.9 | 3,449 | Yes |
| 10 | AZ Perfect Comfort Heating & Cooling | 4.9 | 810 | Yes |
Before you hire an HVAC contractor
5 quick checks before you call.
- Check the license.
In Arizona, look them up with the Arizona Registrar of Contractors (ROC).
- 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 Phoenix?
Reliance Heating & Air Conditioning ranks #1 with 5.0 stars from 1,027 reviews.
Which HVAC contractors in Phoenix are open 24 hours?
Mountainside Air Conditioning Repair, One Hour Heating & Air Conditioning, Ideal Air Conditioning and Insulation, Day & Night Air Conditioning, Heating, & Plumbing, American Home Water & Air and AZ Perfect Comfort Heating & Cooling are open 24 hours, 7 days a week.
Which HVAC contractor in Phoenix has the most reviews?
Day & Night Air Conditioning, Heating, & Plumbing has the most, with 9,878 Google reviews and a 4.9 rating.
How do I check if an HVAC contractor in Phoenix is licensed?
Look them up with the Arizona Registrar of Contractors (ROC) at https://roc.az.gov/. 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.
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