27 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Chatham: Handy Bros. HVAC Chatham (AC and Furnace Repair), CR Score 96/100; 4.9★ from 2,246 Google reviews; open 24/7.
Best for emergencies (open 24/7): Reliance Heating, Air Conditioning & Plumbing, posts 24/7 hours; ranked #2 of 27.
Most-reviewed: Postma Heating and Cooling, 1,480 Google reviews at 4.9★, the most of 27 ranked after Handy Bros. HVAC Chatham (AC and Furnace Repair); ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
27 Chatham HVAC contractors are ranked here by CR Score, from 8 published factors. 4 are open 24/7, 13 open Saturdays and 10 open Sundays, based on posted hours. The median Google rating is 4.9★ across 27 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Handy Bros. HVAC Chatham (AC and Furnace Repair) | 96 | 4.9★ (2,246) | Chatham | 24/7 | Overall |
| 2 | Reliance Heating, Air Conditioning & Plumbing | 95 | 4.8★ (1,442) | Chatham | 24/7 | Emergencies |
| 3 | Postma Heating and Cooling | 92 | 4.9★ (1,480) | Chatham | Sat · Sun · Evenings | Most reviews |
| 4 | Superior Plumbing & Heating of Chatham | 91 | 4.9★ (84) | Chatham | 24/7 | — |
| 5 | Superior HVAC Service, Heating & Air Conditioning | 87 | 5.0★ (55) | Chatham | Sat · Sun · Evenings | — |
| 6 | Affordable Home Comfort | 84 | 5.0★ (12) | Chatham | Sat · Sun · Evenings | — |
| 7 | McLaughlin & Sons Heating - Paul | 83 | 4.8★ (13) | Chatham | — | — |
| 8 | Habib Mechanical | 83 | 5.0★ (6) | Chatham | Sat · Sun · Evenings | — |
| 9 | Complete Heat & Air conditioning Inc. | 82 | 5.0★ (73) | Corunna, 33 km away | Sat · Sun · Evenings | — |
| 10 | Perry Refrigeration Limited | 81 | 3.5★ (12) | Chatham | — | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.9★ from 2,246 Google reviews, the most Google reviews on this list (2,246).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chatham
Ranked #2 because of its Google rating and availability: 4.8★ from 1,442 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chatham
Ranked #3 because of its Google rating and trade focus: 4.9★ from 1,480 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chatham
Ranked #4 because of its Google rating and availability: 4.9★ from 84 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chatham
Ranked #5 because of its Google rating and trade focus: 5.0★ from 55 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chatham
Ranked #6 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.
Based in Chatham
Ranked #7 because of its Google rating and trade focus: 4.8★ from 13 Google reviews, listed on Google as “HVAC contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Chatham
Ranked #8 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Corunna, 33 km away
Ranked #9 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 Chatham
Ranked #10 because of its Google rating and trade focus: 3.5★ from 12 Google reviews, listed on Google as “HVAC contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Chatham
Ranked #11 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 Chatham
Ranked #12 because of its Google rating and trade focus: 4.8★ from 72 Google reviews, listed on Google as “Heating contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Essex, 26 km away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chatham
Ranked #14 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chatham
Ranked #15 because of its Google rating and trade focus: 4.5★ from 42 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chatham
Ranked #16 because of its Google rating and trade focus: 3.2★ from 13 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chatham
Ranked #17 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chatham
Ranked #18 because of its Google rating and trade focus: 4.3★ from 8 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Chatham
Ranked #19 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chatham
Ranked #20 because of its Google rating and trade focus: 4.0★ from 22 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chatham
Ranked #21 because of its Google rating and trade focus: 4.3★ from 6 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lambton Shores, 32 km away
Ranked #22 because of its Google rating and availability: 5.0★ from 6 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Essex, 26 km away
Ranked #23 because of its Google rating and trade focus: 4.6★ from 79 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Windsor, 30 km away
Ranked #24 because of its Google rating and availability: 5.0★ from 10 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Chatham
Ranked #25 because of its Google rating and trade focus: 4.9★ from 10 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #27, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Mastro's Heating and Cooling Inc. | 72 | 4.4★ (36) | 27 km |
| 27 | Sealed | 58 | 3.1★ (43) | 33 km |
10 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 |
|---|---|---|
| Ampro Electric | 4.6★ (25) | In Chatham |
| Evolved Plumbing & Mechanical | 4.9★ (75) | In Chatham |
| Harper Plumbing and Heating | 5.0★ (1) | In Chatham |
| Justin`s Heating and Cooling | 5.0★ (2) | In Chatham |
| O'Phee Mechanical Ltd | 5.0★ (5) | In Chatham |
| Plumb Tech | 4.4★ (234) | In Chatham |
| Pro Desk at RONA | In Chatham | |
| Shettell Enterprises | In Chatham | |
| The Home Comfort Group | 1.0★ (1) | In Chatham |
| The Service Pros | 9 km |
US national ranges converted to CAD, not adjusted for Chatham. 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 27 Chatham HVAC contractors on 8 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. Unknown factors are left out of the score, 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 Chatham data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |