249 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Port Colborne: Reimer Heating, Cooling & Plumbing, CR Score 62/100; 4.9★ from 8,360 Google reviews; open 24/7.
Best for emergencies (open 24/7): Zenner & Ritter Home Services, posts 24/7 hours; ranked #2 of 249.
Most-reviewed: Zenner & Ritter Home Services, 5,592 Google reviews at 4.9★, the most of 249 ranked after Reimer Heating, Cooling & Plumbing; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
249 Port Colborne HVAC contractors are ranked here by CR Score, from ten published factors. 104 are open 24/7, 158 open Saturdays and 130 open Sundays, based on posted hours. The median Google rating is 4.8★ across 249 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Reimer Heating, Cooling & Plumbing | 62 | 4.9★ (8,360) | Cheektowaga, 37 km away | 24/7 | Overall |
| 2 | Zenner & Ritter Home Services | 62 | 4.9★ (5,592) | Buffalo, 34 km away | 24/7 | Emergencies, Most reviews |
| 3 | T-Mark Plumbing, Heating & Cooling- Buffalo | 62 | 4.9★ (3,978) | Buffalo, 33 km away | 24/7 | — |
| 4 | Roy's Plumbing, Heating, Cooling & Electrical | 62 | 4.8★ (3,074) | Tonawanda, 28 km away | 24/7 | — |
| 5 | Reliance Heating, Air Conditioning & Plumbing | 61 | 4.8★ (2,986) | St. Catharines, 30 km away | 24/7 | — |
| 6 | Holley Home Comfort | 61 | 5.0★ (53) | Port Colborne | 24/7 | — |
| 7 | Mr. Furnace Heating and Air Conditioning | 61 | 4.8★ (2,672) | St. Catharines, 30 km away | 24/7 | — |
| 8 | Williams Kool Heat | 61 | 4.9★ (560) | Welland, 11 km away | Sat · Sun · Evenings | — |
| 9 | Thermal Comfort Solutions Heating and Cooling | 61 | 5.0★ (38) | Port Colborne | 24/7 | — |
| 10 | Just Right Heating & Cooling | 60 | 5.0★ (384) | Grand Island, 26 km away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
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 review volume: 4.9★ from 8,360 Google reviews, the most in Port Colborne.
Based in Buffalo, 34 km away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 5,592 Google reviews, listed on Google as “HVAC contractor”.
Based in Buffalo, 33 km away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 3,978 Google reviews, listed on Google as “HVAC contractor”.
Based in Tonawanda, 28 km away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 3,074 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Catharines, 30 km away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 2,986 Google reviews, listed on Google as “HVAC contractor”.
Based in Port Colborne
Ranked #6 because of its Google rating and trade focus: 5.0★ from 53 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Catharines, 30 km away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 2,672 Google reviews, listed on Google as “HVAC contractor”.
Based in Welland, 11 km away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 560 Google reviews, listed on Google as “HVAC contractor”.
Based in Port Colborne
Ranked #9 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “HVAC contractor”.
Based in Grand Island, 26 km away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 384 Google reviews, listed on Google as “HVAC contractor”.
Based in Niagara Falls, 27 km away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 822 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Catharines, 31 km away
Ranked #12 because of its Google rating and trade focus: 4.6★ from 2,788 Google reviews, listed on Google as “HVAC contractor”.
Based in Port Colborne
Ranked #13 because of its Google rating and trade focus: 4.8★ from 34 Google reviews, listed on Google as “HVAC contractor”.
Based in Amherst, 38 km away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 1,236 Google reviews, listed on Google as “HVAC contractor”.
Based in Niagara Falls, 29 km away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 405 Google reviews, listed on Google as “HVAC contractor”.
Based in Kenmore, 29 km away
Ranked #16 because of its Google rating and trade focus: 4.7★ from 796 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Catharines, 26 km away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 349 Google reviews, listed on Google as “HVAC contractor”.
Based in Niagara Falls, 23 km away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 336 Google reviews, listed on Google as “HVAC contractor”.
Based in Niagara Falls, 21 km away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 123 Google reviews, listed on Google as “HVAC contractor”.
Based in Niagara Falls, 32 km away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 877 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Welland, 11 km away
Ranked #21 because of its Google rating and trade focus: 4.6★ from 56 Google reviews, listed on Google as “HVAC contractor”.
Based in Port Colborne
Ranked #22 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “HVAC contractor”.
Based in Buffalo, 33 km away
Ranked #23 because of its Google rating and trade focus: 4.8★ from 403 Google reviews, listed on Google as “HVAC contractor”.
Based in Welland, 11 km away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 88 Google reviews, listed on Google as “HVAC contractor”.
Based in Fort Erie, 17 km away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 28 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. We publish the top 50 of 249 ranked HVAC contractors here; the rest are on their profiles.
20 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 |
|---|---|---|
| AIR 1 HEATING AND COOLING | 5.0★ (1) | 21 km |
| AIR 1 HEATING AND COOLING | 1.0★ (1) | 26 km |
| Air In Motion | 5.0★ (1) | 23 km |
| Air In Motion HVAC Systems | 4.2★ (5) | 9 km |
| All Star Mechanical | 1.0★ (1) | 26 km |
| Anticolas Heat & Cool | 5.0★ (2) | 37 km |
| Climate Diagnostics | 5.0★ (66) | 35 km |
| EAS Heating & Air Cond | 2.5★ (2) | 31 km |
| H.W. Bryk and Sons | 4.3★ (75) | 30 km |
| Heatech Mechanical | 3.0★ (2) | 27 km |
| Ideal Plumbing & Heating | 4.3★ (39) | 25 km |
| JKJ Heating | 5.0★ (1) | 5 km |
| Jm Refrigeration Heating & AC | 5.0★ (1) | 26 km |
| John Lock Air Conditioning & Heating Service Inc. | 4.7★ (140) | 38 km |
| Lennox | 4.0★ (2) | 35 km |
| Pro Desk at RONA | 4.5★ (2) | 13 km |
| R. J. Dippold HomeWorks INC Heating and Air | 4.9★ (63) | 37 km |
| Red Seal Mechanical | 5.0★ (1) | 22 km |
| Superior Plumbing & Heating of Welland | 4.7★ (87) | 8 km |
| The Enviro-Niagara Group | 4.3★ (96) | 26 km |
US national ranges converted to CAD, not adjusted for Port Colborne. 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 249 Port Colborne 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 Port Colborne 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 |