92/100CR Score
Ranked #1 because of its Google rating and availability: 5.0★ from 61 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 61 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Emergency HVAC Contractors in Perth, ON (2026)
16 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank
4 of the 16 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.
If you smell gas, leave the building now and call your gas utility or 911 from outside.
The short answer
- 1
#1 for emergency heating and cooling in Perth: Hemlock Heating and Cooling, open 24/7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
Top emergency HVAC contractors in Perth at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours |
|---|---|---|---|---|---|
| 1 | Hemlock Heating and Cooling | 92 | 5.0★ (61) | Perth | 24/7 |
| 2 | Capital City Heating and Cooling Inc. | 91 | 5.0★ (341) | Ottawa, 39 km away | 24/7 |
| 3 | ServicePlus Heating and Cooling | 90 | 5.0★ (70) | Smiths Falls, 18 km away | 24/7 |
| 4 | HonestAir & Home Solutions | 89 | 5.0★ (9) | Perth | 24/7 |
| 5 | J & C Heating & Cooling | 82 | 4.5★ (20) | Perth | — |
| 6 | Comfort Pro Ltd. | 66 | 5.0★ (317) | Carleton Place, 27 km away | — |
| 7 | Carleton Refrigeration Heating & Air Conditioning Ltd | 63 | 4.7★ (218) | Carleton Place, 29 km away | — |
| 8 | Denoco Energy Systems Ltd | 63 | 4.6★ (102) | Smiths Falls, 19 km away | — |
| 9 | McNamee Plumbing & Heating | 63 | 4.2★ (34) | Perth | — |
| 10 | TBG Mechanical Solutions Limited | 62 | 4.8★ (91) | Carleton Place, 29 km away | — |
Call an emergency HVAC contractor in Perth now
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.
- #1Call (613) 869-0910
Open 24/7 · 5.0 from 61 Google reviews
- #2Call (613) 274-0220
#2Capital City Heating and Cooling Inc.
Open 24/7 · 5.0 from 341 Google reviews
- #3Call (613) 801-2041
#3ServicePlus Heating and Cooling
Open 24/7 · 5.0 from 70 Google reviews
- #4Call (905) 999-7266
Open 24/7 · 5.0 from 9 Google reviews
The 16 emergency HVAC contractors in Perth, ranked
24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights.
Based in Ottawa, 39 km away
91/100CR ScoreRanked #2 because of its Google rating and review volume: 5.0★ from 341 Google reviews, 341 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 341 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7820 Flewellyn Rd, Ottawa, ON K0A 1B0
Based in Smiths Falls, 18 km away
90/100CR ScoreRanked #3 because of its Google rating and availability: 5.0★ from 70 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 70 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 17 Church St E, Smiths Falls, ON K7A 4S9
Based in Perth
89/100CR ScoreRanked #4 because of its Google rating and availability: 5.0★ from 9 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 9 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2799 Drummond Concession 2, Perth, ON K7H 3C3
Based in Perth
82/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.5★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
- 4.5★ from 20 Google reviews
- Address
- 2595 Rideau Ferry Rd, Perth, ON K7H 0G5
Based in Carleton Place, 27 km away
66/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 317 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 317 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 50 Bennett St Unit 5, Carleton Place, ON K7C 4J9
Based in Carleton Place, 29 km away
63/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.7★ from 218 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.7★ from 218 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 150 Industrial Ave, Carleton Place, ON K7C 3T2
Based in Smiths Falls, 19 km away
63/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.6★ from 102 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.6★ from 102 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 2 Victoria Ave, Smiths Falls, ON K7A 1E3
Based in Perth
63/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.2★ from 34 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.2★ from 34 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 9 Lanark Rd, Perth, ON K7H 2R9
Based in Carleton Place, 29 km away
62/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 91 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.8★ from 91 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 130 Industrial Ave Unit 420, Carleton Place, ON K7C 3C4
Based in Perth
60/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 27 Google reviews, listed on Google as “Insulation contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 27 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 8 Herriott St, Perth, ON K7H 1S9
Based in Smiths Falls, 18 km away
60/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 12 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 14 Marguerite St, Smiths Falls, ON K7A 5H1
Based in Smiths Falls, 19 km away
58/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 11 Google reviews
- Hours
- Mon–Fri 8:30 AM–4:30 PM · Sat–Sun closed
Based in Carleton Place, 29 km away
55/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.7★ from 26 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.7★ from 26 Google reviews
- Hours
- Mon–Fri 7 AM–4 PM · Sat–Sun closed
- Address
- 61 Industrial Ave, Carleton Place, ON K7C 3T2
Based in Carleton Place, 29 km away
52/100CR ScoreRanked #15 because of its Google rating and review volume: 4.7★ from 23 Google reviews, 23 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.7★ from 23 Google reviews
- Hours
- Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
- Address
- 25 Bates Dr, Carleton Place, ON K7C 4J8
Based in Carleton Place, 28 km away
52/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.2★ from 15 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.2★ from 15 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
- Address
- 162 Munro St, Carleton Place, ON K7C 1H1
How we ranked emergency HVAC contractors in Perth
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) |
Emergency HVAC contractors in Perth: questions
Which HVAC contractors in Perth are open 24/7?
4 on this list post 24/7 hours: Hemlock Heating and Cooling, Capital City Heating and Cooling Inc., ServicePlus Heating and Cooling and HonestAir & Home Solutions.
Who is ranked #1 for emergency heating and cooling in Perth, ON?
Hemlock Heating and Cooling is #1, with a CR Score of 92 out of 100 on emergency weights.
How are emergency HVAC contractors in Perth ranked?
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.
What should I do before the HVAC contractor arrives?
If you smell gas, leave the building now and call your gas utility or 911 from outside.
How many emergency HVAC contractors here list a phone number?
16 of the 16 businesses ranked in full list a phone number. Tap Call to dial it.
Update log for Perth
- October 2026: CR Scores recalculated for 16 hvac contractors serving Perth.