Top 50 of 847 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 Scarborough: Mersey Heating and Air Conditioning, 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 | Mersey Heating and Air Conditioning | 66 | 4.8★ (3,715) | Scarborough | 24/7 |
| 2 | Reliance Heating, Air Conditioning & Plumbing | 66 | 4.7★ (9,158) | North York, 6 km away | 24/7 |
| 3 | Go Lime | 66 | 4.8★ (6,512) | North York, 6 km away | 24/7 |
| 4 | Reliance Heating, Air Conditioning & Plumbing | 65 | 4.9★ (10,870) | Richmond Hill, 13 km away | 24/7 |
| 5 | Enercare | 64 | 4.8★ (11,186) | North York, 18 km away | 24/7 |
| 6 | Enercare | 64 | 4.8★ (2,085) | Ajax, 6 km away | 24/7 |
| 7 | Enercare | 64 | 4.9★ (9,609) | Vaughan, 24 km away | 24/7 |
| 8 | BreezeCome Home Service/Quality Breeze 清风到家 服务到家 | 63 | 4.8★ (481) | Scarborough | 24/7 |
| 9 | High Efficiency Cooling & Heating Inc. | 63 | 4.8★ (1,319) | Markham, 9 km away | 24/7 |
| 10 | ICare Home Comfort | 63 | 4.9★ (836) | Markham, 8 km 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.
#1Mersey Heating and Air Conditioning
Open 24/7 · 4.8 from 3,715 Google reviews
#2Reliance Heating, Air Conditioning & Plumbing
Open 24/7 · 4.7 from 9,158 Google reviews
#3Go Lime
Open 24/7 · 4.8 from 6,512 Google reviews
#4Reliance Heating, Air Conditioning & Plumbing
Open 24/7 · 4.9 from 10,870 Google reviews
#5Enercare
Open 24/7 · 4.8 from 11,186 Google reviews
#6Enercare
Open 24/7 · 4.8 from 2,085 Google reviews
#7Enercare
Open 24/7 · 4.9 from 9,609 Google reviews
#8BreezeCome Home Service/Quality Breeze 清风到家 服务到家
Open 24/7 · 4.8 from 481 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 847 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: 4.8★ from 3,715 Google reviews, listed on Google as “HVAC contractor”.
Based in North York, 6 km away
Ranked #2 because of its Google rating and trade focus: 4.7★ from 9,158 Google reviews, listed on Google as “HVAC contractor”.
Based in North York, 6 km away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 6,512 Google reviews, listed on Google as “HVAC contractor”.
Based in Richmond Hill, 13 km away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 10,870 Google reviews, listed on Google as “HVAC contractor”.
Based in North York, 18 km away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 11,186 Google reviews, listed on Google as “HVAC contractor”.
Based in Ajax, 6 km away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 2,085 Google reviews, listed on Google as “HVAC contractor”.
Based in Vaughan, 24 km away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 9,609 Google reviews, listed on Google as “HVAC contractor”.
Based in Scarborough
Ranked #8 because of its Google rating and trade focus: 4.8★ from 481 Google reviews, listed on Google as “HVAC contractor”.
Based in Markham, 9 km away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 1,319 Google reviews, listed on Google as “HVAC contractor”.
Based in Markham, 8 km away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 836 Google reviews, listed on Google as “HVAC contractor”.
Based in Scarborough
Ranked #11 because of its Google rating and trade focus: 5.0★ from 165 Google reviews, listed on Google as “HVAC contractor”.
Based in North York, 8 km away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 529 Google reviews, listed on Google as “HVAC contractor”.
Based in North York, 11 km away
Ranked #13 because of its Google rating and trade focus: 4.7★ from 1,470 Google reviews, listed on Google as “HVAC contractor”.
Based in Pickering, 17 km away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 1,570 Google reviews, listed on Google as “HVAC contractor”.
Based in Etobicoke, 27 km away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 4,281 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga, 37 km away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 20,445 Google reviews, listed on Google as “HVAC contractor”.
Based in East York, 10 km away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 490 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Pickering, 17 km away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 1,230 Google reviews, listed on Google as “HVAC contractor”.
Based in Markham, 9 km away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 583 Google reviews, listed on Google as “HVAC contractor”.
Based in Oshawa, 33 km away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 8,942 Google reviews, listed on Google as “HVAC contractor”.
Based in North York, 15 km away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 1,154 Google reviews, listed on Google as “HVAC contractor”.
Based in Markham, 8 km away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 366 Google reviews, listed on Google as “HVAC contractor”.
Based in Toronto, 16 km away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 1,854 Google reviews, listed on Google as “HVAC contractor”.
Based in Markham, 9 km away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 384 Google reviews, listed on Google as “HVAC contractor”.
Based in Vaughan, 21 km away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 1,314 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 |