All HVAC contractors in Houston

10 Best 24-Hour in

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Quick answer #1 is Vibrant Mechanical (5.0★, 243 reviews)

The best-rated 24-hour HVAC contractors in Houston, TX are Vibrant Mechanical (5.0★, 243 reviews), Mr. Reliable Heating & Air (4.9★, 867 reviews) and Priority AC & Heat (4.9★, 681 reviews).

  • 4.9★average rating
  • 6,453Google reviews
  • 10open 24/7
  • 8hvac specialists

Checked · How we rank

All HVAC contractors in Houston

  1. Vibrant Mechanical

    5.0243 reviews
    Open 24 hours, every dayHVAC specialistMuseum District · 77004
    Call(281) 436-9758View details

  2. Mr. Reliable Heating & Air

    4.9867 reviews
    Open 24 hours, every dayHVAC specialist77043
    Call(832) 263-3401View details

  3. Priority AC & Heat

    4.9681 reviews
    Open 24 hours, every dayHVAC specialistClear Lake · 77062
    Call(713) 854-2776View details

  4. Hage Energy

    5.0210 reviews
    Open 24 hours, every dayHVAC specialist77057
    Call(713) 560-0600View details

  5. Excel Air

    4.9554 reviews
    Open 24 hours, every dayHVAC specialist77041
    Call(713) 300-2803View details

  6. The Lee Thompson Co

    4.9533 reviews
    Open 24 hours, every dayHVAC specialistSpring Branch · 77080
    Call(713) 869-9895View details

  7. Bellaire Air Conditioning

    4.9528 reviews
    Open 24 hours, every dayHVAC specialist77081
    Call(713) 428-2279View details

  8. Comfort Star Ac Repair

    4.9433 reviews
    Open 24 hours, every dayHVAC specialistSpring Branch · 77055
    Call(713) 999-1900View details

  9. All Star A/C, Plumbing & Electrical

    4.92,020 reviews
    Open 24 hours, every dayMost reviewedAlso does: Electrical and Plumbing77070
    Call(713) 842-9532View details

  10. Punbar Air

    4.9384 reviews
    Open 24 hours, every dayAlso does: Electrical77077
    Call(832) 736-4432View details

About this list

These are the 10 highest-rated HVAC contractors in Houston that are open 24 hours a day, 7 days a week. Out of 52 HVAC contractors in Houston with round-the-clock hours, these average 4.9 stars across 6,453 Google reviews. Vibrant Mechanical ranks first with 5.0 stars from 243 reviews.

Last checked How we rank
Compare all 10 side by side
#BusinessRatingReviews24/7
1Vibrant Mechanical5.0243Yes
2Mr. Reliable Heating & Air4.9867Yes
3Priority AC & Heat4.9681Yes
4Hage Energy5.0210Yes
5Excel Air4.9554Yes
6The Lee Thompson Co4.9533Yes
7Bellaire Air Conditioning4.9528Yes
8Comfort Star Ac Repair4.9433Yes
9All Star A/C, Plumbing & Electrical4.92,020Yes
10Punbar Air4.9384Yes

Before you hire an HVAC contractor

5 quick checks before you call.

  1. Check the license.

    In Texas, look them up with the Texas Department of Licensing and Regulation (TDLR).

  2. Ask for proof of insurance.

    Liability insurance covers damage to your home if something goes wrong.

  3. Get 2 or 3 written quotes.

    Compare what each one includes, not just the price.

  4. Don't pay everything upfront.

    A deposit is normal. Pay the rest when the work is done.

  5. Read the newest reviews.

    Recent reviews say more about the business today than old ones.

Questions people ask

Who is the best-rated 24-hour HVAC contractor in Houston?

Vibrant Mechanical ranks #1 with 5.0 stars from 243 reviews.

How many HVAC contractors in Houston are open 24 hours?

We found 52 HVAC contractors in Houston open 24 hours, 7 days a week. These are the 10 with the best ratings.

Which HVAC contractor in Houston has the most reviews?

All Star A/C, Plumbing & Electrical has the most, with 2,020 Google reviews and a 4.9 rating.

How do I check if an HVAC contractor in Houston is licensed?

Look them up with the Texas Department of Licensing and Regulation (TDLR) at https://www.tdlr.texas.gov/LicenseSearch/. 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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