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Emergency HVAC Contractors in Houston, TX (2026)

Top 50 of 1,058 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank

25 of the 50 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.

If you smell gas, leave the building now and call your gas utility or 911 from outside.

The short answer

  1. 1

    #1 for emergency heating and cooling in Houston: Air Tech of Houston AC & Plumbing, open 24/7.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

Top emergency HVAC contractors in Houston at a glance

Top emergency HVAC contractors in Houston at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Air Tech of Houston AC & Plumbing954.9★ (5,588)Houston24/7
2Abacus Plumbing, Air Conditioning, & Electrical954.7★ (11,737)Houston24/7
3One Hour Air Conditioning & Heating® of Houston954.7★ (9,886)Houston24/7
4ARS / Rescue Rooter944.6★ (11,276)Houston24/7
5Service Experts Houston944.8★ (4,419)Houston24/7
6Airtron Heating & Air Conditioning944.8★ (3,604)Houston24/7
7All Star A/C, Plumbing & Electrical934.9★ (1,765)Houston24/7
8Air Star Now935.0★ (646)Houston24/7
9Priority AC & Heat935.0★ (627)Houston24/7
10House Pro Air Conditioning924.7★ (1,336)Houston24/7

Call an emergency HVAC contractor in Houston now

24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.

The 50 emergency HVAC contractors in Houston, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 1,058 is on the HVAC contractors page.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  8. #8 Air Star Now

    Based in Houston

    93/100CR Score

    Ranked #8 because of its Google rating and availability: 5.0★ from 646 Google reviews, open 24/7.

    • 5.0★ from 646 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    6607 Flintlock Rd, Houston, TX 77040
    View profile for Air Star Now(713) 597-4457

  12. #12 Excel Air

    Based in Houston

    92/100CR Score

    Ranked #12 because of its Google rating and availability: 4.9★ from 442 Google reviews, open 24/7.

    • 4.9★ from 442 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    6125 W Sam Houston Pkwy N Suite 301, Houston, TX 77041
    View profile for Excel Air(713) 300-2803

  16. #16 Hage Energy

    Based in Houston

    91/100CR Score

    Ranked #16 because of its Google rating and availability: 5.0★ from 203 Google reviews, open 24/7.

    • 5.0★ from 203 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5773 Woodway Dr # 217, Houston, TX 77057
    View profile for Hage Energy(713) 560-0600

  20. #20 Service Company

    Based in Houston

    90/100CR Score

    Ranked #20 because of its Google rating and availability: 4.7★ from 474 Google reviews, open 24/7.

    • 4.7★ from 474 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    16628 Sea Lark Rd, Houston, TX 77062
    View profile for Service Company(281) 297-8486

Top 50 of 1,058 HVAC contractors by emergency score

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.

HVAC contractors in Houston, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Windsanity Mini Split904.8★ (206)In Houston
27Air Tech of Humble - Elite Comfort904.9★ (2,937)18 mi
28Air Tech of Pasadena - Miles Service904.9★ (1,334)13 mi
29Master AC and Heat, LLC- The Heights904.8★ (165)In Houston
30Covar Aircare LLC894.8★ (150)In Houston
31Champion and Nash894.9★ (1,006)13 mi
32AirSol Air Conditioning and Heating895.0★ (58)In Houston
33Alief Ultra Mechanical894.7★ (127)In Houston
34Revolution Air894.7★ (123)In Houston
35John Moore Services894.7★ (18,868)In Houston
36Space City Mechanical894.9★ (67)In Houston
37Houston A/C and Heating Pros895.0★ (52)In Houston
38Clear the Air Cooling & Heating894.9★ (1,785)19 mi
39Daryl's A/C & Heating, LLC894.9★ (489)12 mi
40Air American Solution LLC894.9★ (59)In Houston
41Village Plumbing, Air & Electric884.8★ (9,335)In Houston
42AAD Heating & Air Conditioning885.0★ (43)In Houston
43Du-West Air Conditioning885.0★ (160)10 mi
44Excellence A/C & Heating885.0★ (143)9 mi
45LMH Services885.0★ (348)15 mi
46M&S Mechanical for AC and Heating884.6★ (89)In Houston
47Sherman Air Conditioning Experts885.0★ (33)In Houston
48All American GC & AC884.9★ (139)8 mi
49Master Air Inc.884.9★ (656)16 mi
50Newmark Air Conditioning885.0★ (30)In Houston

How we ranked emergency HVAC contractors in Houston

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed from
Reputation25%Bayesian-adjusted Google star rating
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2
Review volume10%log10(reviews + 1) against the list maximum
Recency10%Share of reviews from the last 12 months
Availability20%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radius
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)

Emergency HVAC contractors in Houston: questions

Which HVAC contractors in Houston are open 24/7?

25 on this list post 24/7 hours, including Air Tech of Houston AC & Plumbing, Abacus Plumbing, Air Conditioning, & Electrical, One Hour Air Conditioning & Heating® of Houston, ARS / Rescue Rooter and Service Experts Houston.

Who is ranked #1 for emergency heating and cooling in Houston, TX?

Air Tech of Houston AC & Plumbing is #1, with a CR Score of 95 out of 100 on emergency weights.

How are emergency HVAC contractors in Houston ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

What should I do before the HVAC contractor arrives?

If you smell gas, leave the building now and call your gas utility or 911 from outside.

How many emergency HVAC contractors here list a phone number?

25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Houston

  1. October 2026: CR Scores recalculated for 1,058 hvac contractors serving Houston.
  2. October 2026: 6 duplicate listings merged.

More emergency and heating and cooling pages