Top 50 of 281 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 Buffalo: Zenner & Ritter Home Services, 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 | Zenner & Ritter Home Services | 68 | 4.9★ (5,592) | Buffalo | 24/7 |
| 2 | T-Mark Plumbing, Heating & Cooling- Buffalo | 67 | 4.9★ (3,978) | Buffalo | 24/7 |
| 3 | Reimer Heating, Cooling & Plumbing | 67 | 4.9★ (8,360) | Cheektowaga, 5 mi away | 24/7 |
| 4 | Isaac Heating and Air Conditioning | 65 | 4.9★ (863) | Buffalo | 24/7 |
| 5 | Roy's Plumbing, Heating, Cooling & Electrical | 65 | 4.8★ (3,074) | Tonawanda, 7 mi away | 24/7 |
| 6 | Adema Heating & Air Conditioning Inc | 64 | 4.8★ (403) | Buffalo | 24/7 |
| 7 | O'Donnell Heating & Air Conditioning Inc - Buffalo | 64 | 4.7★ (430) | Buffalo | 24/7 |
| 8 | Sunbeam Service Experts | 64 | 4.9★ (1,083) | Depew, 8 mi away | 24/7 |
| 9 | Emerald Heating & Cooling | 64 | 4.9★ (1,391) | Depew, 10 mi away | 24/7 |
| 10 | Heatwave Heating & Cooling | 63 | 4.9★ (1,236) | Amherst, 11 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.
#1Zenner & Ritter Home Services
Open 24/7 · 4.9 from 5,592 Google reviews
#2T-Mark Plumbing, Heating & Cooling- Buffalo
Open 24/7 · 4.9 from 3,978 Google reviews
#3Reimer Heating, Cooling & Plumbing
Open 24/7 · 4.9 from 8,360 Google reviews
#4Isaac Heating and Air Conditioning
Open 24/7 · 4.9 from 863 Google reviews
#5Roy's Plumbing, Heating, Cooling & Electrical
Open 24/7 · 4.8 from 3,074 Google reviews
#6Adema Heating & Air Conditioning Inc
Open 24/7 · 4.8 from 403 Google reviews
#7O'Donnell Heating & Air Conditioning Inc - Buffalo
Open 24/7 · 4.7 from 430 Google reviews
Open 24/7 · 4.9 from 1,083 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 281 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 5,592 Google reviews, listed on Google as “HVAC contractor”.
Based in Buffalo
Ranked #2 because of its Google rating and trade focus: 4.9★ from 3,978 Google reviews, listed on Google as “HVAC contractor”.
Based in Cheektowaga, 5 mi away
Ranked #3 because of its Google rating and review volume: 4.9★ from 8,360 Google reviews.
Based in Buffalo
Ranked #4 because of its Google rating and trade focus: 4.9★ from 863 Google reviews, listed on Google as “HVAC contractor”.
Based in Tonawanda, 7 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 3,074 Google reviews, listed on Google as “HVAC contractor”.
Based in Buffalo
Ranked #6 because of its Google rating and trade focus: 4.8★ from 403 Google reviews, listed on Google as “HVAC contractor”.
Based in Buffalo
Ranked #7 because of its Google rating and trade focus: 4.7★ from 430 Google reviews, listed on Google as “HVAC contractor”.
Based in Depew, 8 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 1,083 Google reviews, listed on Google as “HVAC contractor”.
Based in Depew, 10 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 1,391 Google reviews, listed on Google as “HVAC contractor”.
Based in Amherst, 11 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 1,236 Google reviews, listed on Google as “HVAC contractor”.
Based in Depew, 8 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 899 Google reviews, listed on Google as “HVAC contractor”.
Based in Kenmore, 6 mi away
Ranked #12 because of its Google rating and trade focus: 4.7★ from 796 Google reviews, listed on Google as “HVAC contractor”.
Based in Depew, 10 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 567 Google reviews, listed on Google as “HVAC contractor”.
Based in Buffalo
Ranked #14 because of its Google rating and trade focus: 5.0★ from 91 Google reviews, listed on Google as “HVAC contractor”.
Based in Buffalo
Ranked #15 because of its Google rating and trade focus: 5.0★ from 66 Google reviews, listed on Google as “HVAC contractor”.
Based in Buffalo
Ranked #16 because of its Google rating and review volume: 4.9★ from 1,036 Google reviews.
Based in Grand Island, 13 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 384 Google reviews, listed on Google as “HVAC contractor”.
Based in West Seneca, 8 mi away
Ranked #18 because of its Google rating and review volume: 4.9★ from 2,699 Google reviews.
Based in Fort Erie, 6 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 108 Google reviews, listed on Google as “HVAC contractor”.
Based in Cheektowaga, 6 mi away
Ranked #20 because of its Google rating and trade focus: 4.7★ from 140 Google reviews, listed on Google as “HVAC contractor”.
Based in Lackawanna, 10 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 175 Google reviews, listed on Google as “HVAC contractor”.
Based in Hamburg, 11 mi away
Ranked #22 because of its Google rating and trade focus: 4.7★ from 300 Google reviews, listed on Google as “HVAC contractor”.
Based in Tonawanda, 9 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 103 Google reviews, listed on Google as “HVAC contractor”.
Based in Fort Erie, 5 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 50 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Niagara Falls, 19 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 822 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 |