16 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Perth: Hemlock Heating and Cooling, CR Score 65/100; 5.0★ from 61 Google reviews; open 24/7.
Best for emergencies (open 24/7): Capital City Heating and Cooling Inc., posts 24/7 hours; ranked #2 of 16.
Most-reviewed: Capital City Heating and Cooling Inc., 341 Google reviews at 5.0★, the most of 16 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
16 Perth HVAC contractors are ranked here by CR Score, from ten published factors. 4 are open 24/7, 4 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.8★ across 16 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Hemlock Heating and Cooling | 65 | 5.0★ (61) | Perth | 24/7 | Overall |
| 2 | Capital City Heating and Cooling Inc. | 63 | 5.0★ (341) | Ottawa, 39 km away | 24/7 | Emergencies, Most reviews |
| 3 | ServicePlus Heating and Cooling | 62 | 5.0★ (70) | Smiths Falls, 18 km away | 24/7 | — |
| 4 | HonestAir & Home Solutions | 61 | 5.0★ (9) | Perth | 24/7 | — |
| 5 | Comfort Pro Ltd. | 59 | 5.0★ (317) | Carleton Place, 27 km away | — | — |
| 6 | J & C Heating & Cooling | 59 | 4.5★ (20) | Perth | — | — |
| 7 | Carleton Refrigeration Heating & Air Conditioning Ltd | 56 | 4.7★ (218) | Carleton Place, 29 km away | — | — |
| 8 | Denoco Energy Systems Ltd | 56 | 4.6★ (102) | Smiths Falls, 19 km away | — | — |
| 9 | McNamee Plumbing & Heating | 56 | 4.2★ (34) | Perth | — | — |
| 10 | TBG Mechanical Solutions Limited | 55 | 4.8★ (91) | Carleton Place, 29 km away | — | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 61 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ottawa, 39 km away
Ranked #2 because of its Google rating and review volume: 5.0★ from 341 Google reviews, the most in Perth.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Smiths Falls, 18 km away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 70 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Perth
Ranked #4 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Carleton Place, 27 km away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 317 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Perth
Ranked #6 because of its Google rating and trade focus: 4.5★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Carleton Place, 29 km away
Ranked #7 because of its Google rating and trade focus: 4.7★ from 218 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Smiths Falls, 19 km away
Ranked #8 because of its Google rating and trade focus: 4.6★ from 102 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Perth
Ranked #9 because of its Google rating and trade focus: 4.2★ from 34 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Carleton Place, 29 km away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 91 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Perth
Ranked #11 because of its Google rating and trade focus: 4.9★ from 27 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Smiths Falls, 18 km away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Smiths Falls, 19 km away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Carleton Place, 29 km away
Ranked #14 because of its Google rating and trade focus: 4.7★ from 26 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Carleton Place, 28 km away
Ranked #15 because of its Google rating and trade focus: 4.2★ from 15 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Carleton Place, 29 km away
Ranked #16 because of its Google rating and review volume: 4.7★ from 23 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
7 more HVAC contractors within 40 km that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| BC Mechanical Services | 5.0★ (2) | In Perth |
| Hawco Heating and Air Conditioning | 5.0★ (2) | 19 km |
| Pro Desk at RONA | 28 km | |
| Stanzel B W Heating & Plumbing | 18 km | |
| Swallow Heating & Cooling Contractors Drummond | In Perth | |
| X-Cel Home Comfort | 18 km | |
| Your Choice HVAC | 39 km |
US national ranges converted to CAD, not adjusted for Perth. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| AC replacement | CA$5,460 | CA$8,400 | CA$11,350 | Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
| Furnace replacement | CA$3,970 | CA$6,770 | CA$9,690 | Per system, installed; typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
In Ontario, furnace and heat pump calls peak in the coldest winter weeks and AC calls in summer heat waves. Spring and fall are the easiest times to book maintenance or a replacement.
We scored 16 Perth HVAC contractors on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.
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 | In Perth data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |