Top 50 of 863 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.
#1 for emergency heating and cooling in Missouri City: 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
| Rank | Business | CR Score | Google rating | Based in | Hours |
|---|---|---|---|---|---|
| 1 | Air Tech of Houston AC & Plumbing | 63 | 4.9★ (5,588) | Houston, 15 mi away | 24/7 |
| 2 | One Hour Air Conditioning & Heating® of Houston | 63 | 4.7★ (9,886) | Houston, 15 mi away | 24/7 |
| 3 | ARS / Rescue Rooter | 63 | 4.6★ (11,276) | Houston, 17 mi away | 24/7 |
| 4 | Maxx AC & Heating | 62 | 4.8★ (304) | Stafford, 1 mi away | 24/7 |
| 5 | Nathan Lazarine A/C Heat & Electric | 62 | 5.0★ (145) | Missouri City | 24/7 |
| 6 | Excellence A/C & Heating | 62 | 5.0★ (143) | Missouri City | 24/7 |
| 7 | House Pro Air Conditioning | 62 | 4.7★ (1,336) | Houston, 8 mi away | 24/7 |
| 8 | Air Energy Air conditioning And heating | 62 | 5.0★ (147) | Stafford, 2 mi away | 24/7 |
| 9 | Bellaire Air Conditioning | 62 | 4.9★ (459) | Houston, 8 mi away | 24/7 |
| 10 | Arnett Mechanical | 61 | 5.0★ (290) | Alvin, 9 mi away | 24/7 |
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.
#1Air Tech of Houston AC & Plumbing
Open 24/7 · 4.9 from 5,588 Google reviews
#2One Hour Air Conditioning & Heating® of Houston
Open 24/7 · 4.7 from 9,886 Google reviews
Open 24/7 · 4.6 from 11,276 Google reviews
Open 24/7 · 4.8 from 304 Google reviews
#5Nathan Lazarine A/C Heat & Electric
Open 24/7 · 5.0 from 145 Google reviews
Open 24/7 · 5.0 from 143 Google reviews
Open 24/7 · 4.7 from 1,336 Google reviews
#8Air Energy Air conditioning And heating
Open 24/7 · 5.0 from 147 Google reviews
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 863 is on the HVAC contractors page.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 5,588 Google reviews, listed on Google as “HVAC contractor”.
Based in Houston, 15 mi away
Ranked #2 because of its Google rating and trade focus: 4.7★ from 9,886 Google reviews, listed on Google as “HVAC contractor”.
Based in Houston, 17 mi away
Ranked #3 because of its Google rating and trade focus: 4.6★ from 11,276 Google reviews, listed on Google as “HVAC contractor”.
Based in Stafford, 1 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 304 Google reviews, listed on Google as “HVAC contractor”.
Based in Missouri City
Ranked #5 because of its Google rating and trade focus: 5.0★ from 145 Google reviews, listed on Google as “HVAC contractor”.
Based in Missouri City
Ranked #6 because of its Google rating and trade focus: 5.0★ from 143 Google reviews, listed on Google as “HVAC contractor”.
Based in Houston, 8 mi away
Ranked #7 because of its Google rating and trade focus: 4.7★ from 1,336 Google reviews, listed on Google as “Air conditioning repair service”.
Based in Stafford, 2 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 147 Google reviews, listed on Google as “HVAC contractor”.
Based in Houston, 8 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 459 Google reviews, listed on Google as “HVAC contractor”.
Based in Alvin, 9 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 290 Google reviews, listed on Google as “HVAC contractor”.
Based in Katy, 21 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 3,343 Google reviews, listed on Google as “HVAC contractor”.
Based in Angleton, 6 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 131 Google reviews, listed on Google as “HVAC contractor”.
Based in Pearland, 20 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 1,785 Google reviews, listed on Google as “HVAC contractor”.
Based in Missouri City
Ranked #14 because of its Google rating and trade focus: 4.9★ from 47 Google reviews, listed on Google as “HVAC contractor”.
Based in Missouri City
Ranked #15 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “HVAC contractor”.
Based in Rosenberg, 8 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 173 Google reviews, listed on Google as “HVAC contractor”.
Based in Katy, 21 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 3,047 Google reviews, listed on Google as “HVAC contractor”.
Based in Katy, 17 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 940 Google reviews, listed on Google as “HVAC contractor”.
Based in Houston, 9 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 198 Google reviews, listed on Google as “HVAC contractor”.
Based in Houston, 22 mi away
Ranked #20 because of its Google rating and trade focus: 4.8★ from 3,604 Google reviews, listed on Google as “HVAC contractor”.
Based in Houston, 10 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 203 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Houston, 17 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 646 Google reviews, listed on Google as “HVAC contractor”.
Based in Houston, 13 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 412 Google reviews, listed on Google as “HVAC contractor”.
Based in Houston, 5 mi away
Ranked #24 because of its Google rating and trade focus: 4.7★ from 127 Google reviews, listed on Google as “HVAC contractor”.
Based in Sugar Land, 4 mi away
Ranked #25 because of its Google rating and trade focus: 4.4★ from 200 Google reviews, listed on Google as “HVAC contractor”.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.
Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. 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.
| Factor | Weight | Computed from |
|---|---|---|
| Reputation | 15% | Google star rating, adjusted for how many reviews back it |
| Credentials | 15% | Active state license, bond and workers’ comp on file |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list |
| Recency | 5% | Share of reviews from the last 12 months |
| Availability | 15% | Weekly open hours, Saturday, Sunday, 24/7 or same-day |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) |
| Proximity | 5% | Based in the city scores highest, less the farther away it is |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are |