Top 28 of 46 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank
16 of the 28 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 Corunna: Reliance Home Comfort, 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 Home Comfort | 94 | 4.8★ (3,256) | Sarnia, 10 km away | 24/7 |
| 2 | It's Your Heating And Cooling Guy | 93 | 4.9★ (739) | Port Huron, 9 km away | 24/7 |
| 3 | Vincent's Heating & Plumbing Inc | 93 | 4.8★ (997) | Port Huron, 9 km away | 24/7 |
| 4 | Dependable Heating Cooling & Refrigeration | 92 | 4.9★ (707) | Sarnia, 13 km away | 24/7 |
| 5 | Handy Bros. HVAC Sarnia (AC and Furnace Repair) | 91 | 4.9★ (312) | Sarnia, 10 km away | 24/7 |
| 6 | Stewart Adams & Son Heating & Air Conditioning LLC | 91 | 5.0★ (200) | Port Huron, 11 km away | 24/7 |
| 7 | Superior Heating & Cooling Inc. | 90 | 4.9★ (191) | Port Huron, 11 km away | 24/7 |
| 8 | Bright's Grove Heating & Cooling (AC and Furnace Repair) | 89 | 5.0★ (166) | Sarnia, 22 km away | 24/7 |
| 9 | Superior Plumbing & Heating of Sarnia | 87 | 5.0★ (20) | Sarnia, 10 km away | 24/7 |
| 10 | ASM - All Systems Mechanical | 85 | 4.8★ (37) | Petrolia, 23 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.
Open 24/7 · 4.8 from 3,256 Google reviews
#2It's Your Heating And Cooling Guy
Open 24/7 · 4.9 from 739 Google reviews
#3Vincent's Heating & Plumbing Inc
Open 24/7 · 4.8 from 997 Google reviews
#4Dependable Heating Cooling & Refrigeration
Open 24/7 · 4.9 from 707 Google reviews
#5Handy Bros. HVAC Sarnia (AC and Furnace Repair)
Open 24/7 · 4.9 from 312 Google reviews
#6Stewart Adams & Son Heating & Air Conditioning LLC
Open 24/7 · 5.0 from 200 Google reviews
#7Superior Heating & Cooling Inc.
Open 24/7 · 4.9 from 191 Google reviews
#8Bright's Grove Heating & Cooling (AC and Furnace Repair)
Open 24/7 · 5.0 from 166 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 46 is on the HVAC contractors page.
Ranked #1 because of its Google rating and review volume: 4.8★ from 3,256 Google reviews, 3,256 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Port Huron, 9 km away
Ranked #2 because of its Google rating and availability: 4.9★ from 739 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Port Huron, 9 km away
Ranked #3 because of its Google rating and availability: 4.8★ from 997 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sarnia, 13 km away
Ranked #4 because of its Google rating and availability: 4.9★ from 707 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sarnia, 10 km away
Ranked #5 because of its Google rating and availability: 4.9★ from 312 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Port Huron, 11 km away
Ranked #6 because of its Google rating and availability: 5.0★ from 200 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Port Huron, 11 km away
Ranked #7 because of its Google rating and availability: 4.9★ from 191 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sarnia, 22 km away
Ranked #8 because of its Google rating and availability: 5.0★ from 166 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sarnia, 10 km away
Ranked #9 because of its Google rating and availability: 5.0★ from 20 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Petrolia, 23 km away
Ranked #10 because of its Google rating and availability: 4.8★ from 37 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Richmond, 27 km away
Ranked #11 because of its Google rating and availability: 5.0★ from 29 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in New Baltimore, 40 km away
Ranked #12 because of its Google rating and availability: 5.0★ from 21 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Petrolia, 23 km away
Ranked #13 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Richmond, 28 km away
Ranked #14 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in New Baltimore, 36 km away
Ranked #15 because of its Google rating and availability: 4.6★ from 10 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Richmond, 28 km away
Ranked #16 because of its Google rating and availability: 3.5★ from 4 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Port Huron, 22 km away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 71 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Marysville, 6 km away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Heating contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Camlachie, 28 km away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “HVAC contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Richmond, 28 km away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “HVAC contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Port Huron, 22 km away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “HVAC contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Sarnia, 26 km away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Corunna
Ranked #23 because of its Google rating and trade focus: 5.0★ from 73 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sarnia, 13 km away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 134 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sarnia, 10 km away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 76 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #28, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | A & C Heating & Cooling | 61 | 4.9★ (491) | 33 km |
| 27 | Superior HVAC Service, Heating & Air Conditioning | 61 | 4.9★ (62) | 12 km |
| 28 | Tocco Heating and Cooling | 59 | 5.0★ (111) | 36 km |
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.
| Factor | Weight | Computed from |
|---|---|---|
| Reputation | 25% | Bayesian-adjusted Google star rating |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 |
| Review volume | 10% | log10(reviews + 1) against the list maximum |
| Recency | 10% | Share of reviews from the last 12 months |
| Availability | 20% | Weekly open hours, Saturday, Sunday, 24/7 or same-day |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) |