Top 50 of 865 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 Mississauga: Reliance Heating, Air Conditioning & 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 | Reliance Heating, Air Conditioning & Plumbing | 68 | 4.8★ (20,445) | Mississauga | 24/7 |
| 2 | AtlasCare Heating & Cooling | 65 | 4.8★ (6,594) | Oakville, 8 km away | 24/7 |
| 3 | Enercare | 65 | 4.7★ (2,722) | Mississauga | 24/7 |
| 4 | Enercare | 65 | 4.9★ (6,242) | Brampton, 13 km away | 24/7 |
| 5 | Enercare | 64 | 4.9★ (4,281) | Etobicoke, 12 km away | 24/7 |
| 6 | Enercare | 64 | 4.9★ (7,135) | Brampton, 18 km away | 24/7 |
| 7 | Furnace King Home Services | 64 | 4.9★ (701) | Mississauga | 24/7 |
| 8 | Reliance Heating, Air Conditioning & Plumbing | 64 | 4.8★ (27,515) | Burlington, 27 km away | 24/7 |
| 9 | Aire One Peel | Furnace Repair Mississauga, Heat Pump Installation & AC Service | 64 | 4.9★ (549) | Mississauga | 24/7 |
| 10 | Enercare | 64 | 4.8★ (11,186) | North York, 22 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.
#1Reliance Heating, Air Conditioning & Plumbing
Open 24/7 · 4.8 from 20,445 Google reviews
Open 24/7 · 4.8 from 6,594 Google reviews
#3Enercare
Open 24/7 · 4.7 from 2,722 Google reviews
#4Enercare
Open 24/7 · 4.9 from 6,242 Google reviews
#5Enercare
Open 24/7 · 4.9 from 4,281 Google reviews
#6Enercare
Open 24/7 · 4.9 from 7,135 Google reviews
Open 24/7 · 4.9 from 701 Google reviews
#8Reliance Heating, Air Conditioning & Plumbing
Open 24/7 · 4.8 from 27,515 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 865 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 20,445 Google reviews, listed on Google as “HVAC contractor”.
Based in Oakville, 8 km away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 6,594 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #3 because of its Google rating and trade focus: 4.7★ from 2,722 Google reviews, listed on Google as “HVAC contractor”.
Based in Brampton, 13 km away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 6,242 Google reviews, listed on Google as “HVAC contractor”.
Based in Etobicoke, 12 km away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 4,281 Google reviews, listed on Google as “HVAC contractor”.
Based in Brampton, 18 km away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 7,135 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #7 because of its Google rating and trade focus: 4.9★ from 701 Google reviews, listed on Google as “HVAC contractor”.
Based in Burlington, 27 km away
Ranked #8 because of its Google rating and review volume: 4.8★ from 27,515 Google reviews.
Based in Mississauga
Ranked #9 because of its Google rating and trade focus: 4.9★ from 549 Google reviews, listed on Google as “Air conditioning contractor”.
Based in North York, 22 km away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 11,186 Google reviews, listed on Google as “HVAC contractor”.
Based in Brampton, 12 km away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 3,190 Google reviews, listed on Google as “HVAC contractor”.
Based in Vaughan, 24 km away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 9,609 Google reviews, listed on Google as “HVAC contractor”.
Based in Oakville, 11 km away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 1,749 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #14 because of its Google rating and trade focus: 5.0★ from 205 Google reviews, listed on Google as “HVAC contractor”.
Based in Brampton, 13 km away
Ranked #15 because of its Google rating and trade focus: 4.7★ from 1,957 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #16 because of its Google rating and trade focus: 4.9★ from 186 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #17 because of its Google rating and trade focus: 5.0★ from 143 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #18 because of its Google rating and trade focus: 4.9★ from 158 Google reviews, listed on Google as “HVAC contractor”.
Based in Oakville, 17 km away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 1,639 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #20 because of its Google rating and trade focus: 4.9★ from 148 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #21 because of its Google rating and trade focus: 5.0★ from 120 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #22 because of its Google rating and trade focus: 5.0★ from 125 Google reviews, listed on Google as “HVAC contractor”.
Based in Milton, 2 km away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 139 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #24 because of its Google rating and trade focus: 5.0★ from 104 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #25 because of its Google rating and trade focus: 4.9★ from 125 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.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Maher Heating & Cooling | 62 | 4.7★ (197) | In Mississauga |
| 27 | Reliance Heating, Air Conditioning & Plumbing | 62 | 4.9★ (10,870) | 37 km |
| 28 | Convertible Heating and Air Conditioning | 61 | 5.0★ (88) | In Mississauga |
| 29 | QuickFast Service Company | 61 | 4.7★ (157) | In Mississauga |
| 30 | Airmaxx heating & airconditioning inc | 61 | 4.9★ (87) | In Mississauga |
| 31 | heavenlyair.ca | 61 | 5.0★ (76) | In Mississauga |
| 32 | Ontario Energy Care HVAC Services | 61 | 4.6★ (168) | In Mississauga |
| 33 | Leite Group - Hvac & Hydronics | 61 | 5.0★ (64) | In Mississauga |
| 34 | The Heatman Heating and Cooling | 61 | 4.9★ (78) | In Mississauga |
| 35 | Go Lime | 61 | 4.8★ (6,512) | 34 km |
| 36 | Reliance Heating, Air Conditioning & Plumbing | 61 | 4.7★ (9,158) | 34 km |
| 37 | Hudson Condominium Solutions Inc | 61 | 5.0★ (694) | 22 km |
| 38 | Air Factor | 61 | 4.9★ (65) | In Mississauga |
| 39 | Bullet Proof Heating & Cooling | 61 | 4.9★ (168) | 9 km |
| 40 | Northwest Gas Ltd | 61 | 5.0★ (187) | 13 km |
| 41 | Reliable HVAC Canada | 61 | 4.9★ (50) | In Mississauga |
| 42 | Reliance Heating, Air Conditioning & Plumbing | 61 | 4.7★ (1,854) | 25 km |
| 43 | Smile HVAC | 60 | 5.0★ (1,314) | 29 km |
| 44 | Atomic Air - Etobicoke | 60 | 5.0★ (148) | 12 km |
| 45 | Brooks Heating & Air | 60 | 4.9★ (537) | 21 km |
| 46 | Maple Air - Heating, Cooling & Electrical | 60 | 4.8★ (1,309) | 26 km |
| 47 | Precision HVAC Mech Inc | 60 | 4.9★ (429) | 20 km |
| 48 | Enercare | 60 | 4.8★ (1,154) | 26 km |
| 49 | For Saving Heating & Cooling | 60 | 4.9★ (36) | In Mississauga |
| 50 | Creature Comforts HVAC | 60 | 5.0★ (941) | 30 km |
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 |