636 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Newmarket: Summers and Smith Cooling & Heating Limited, CR Score 64/100; 4.9★ from 1,559 Google reviews; open 24/7.
Best for emergencies (open 24/7): Reliance Heating, Air Conditioning & Plumbing, posts 24/7 hours; ranked #2 of 636.
Most-reviewed: Enercare, 11,186 Google reviews at 4.8★, the most of 636 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
636 Newmarket HVAC contractors are ranked here by CR Score, from ten published factors. 257 are open 24/7, 477 open Saturdays and 389 open Sundays, based on posted hours. The median Google rating is 4.9★ across 636 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Summers and Smith Cooling & Heating Limited | 64 | 4.9★ (1,559) | Aurora, 6 km away | 24/7 | Overall |
| 2 | Reliance Heating, Air Conditioning & Plumbing | 64 | 4.9★ (10,870) | Richmond Hill, 24 km away | 24/7 | Emergencies |
| 3 | Enercare | 62 | 4.9★ (9,609) | Vaughan, 30 km away | 24/7 | — |
| 4 | Black Forest | 62 | 4.8★ (532) | East Gwillimbury, 5 km away | 24/7 | — |
| 5 | Infiniti Air Conditioning & Heating | 62 | 4.9★ (181) | Newmarket | 24/7 | — |
| 6 | Smile HVAC | 61 | 5.0★ (1,314) | Vaughan, 26 km away | 24/7 | — |
| 7 | Everest Climate Solutions Inc. | 61 | 4.9★ (261) | Newmarket | Sat · Sun · Evenings | — |
| 8 | Enercare | 61 | 4.8★ (11,186) | North York, 37 km away | 24/7 | Most reviews |
| 9 | Go Lime | 61 | 4.8★ (6,512) | North York, 33 km away | 24/7 | — |
| 10 | Reliance Heating, Air Conditioning & Plumbing | 61 | 4.7★ (9,158) | North York, 33 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 trade focus: 4.9★ from 1,559 Google reviews, listed on Google as “HVAC contractor”.
Based in Richmond Hill, 24 km away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 10,870 Google reviews, listed on Google as “HVAC contractor”.
Based in Vaughan, 30 km away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 9,609 Google reviews, listed on Google as “HVAC contractor”.
Based in East Gwillimbury, 5 km away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 532 Google reviews, listed on Google as “HVAC contractor”.
Based in Newmarket
Ranked #5 because of its Google rating and trade focus: 4.9★ from 181 Google reviews, listed on Google as “HVAC contractor”.
Based in Vaughan, 26 km away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 1,314 Google reviews, listed on Google as “HVAC contractor”.
Based in Newmarket
Ranked #7 because of its Google rating and trade focus: 4.9★ from 261 Google reviews, listed on Google as “HVAC contractor”.
Based in North York, 37 km away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 11,186 Google reviews, listed on Google as “HVAC contractor”.
Based in North York, 33 km away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 6,512 Google reviews, listed on Google as “HVAC contractor”.
Based in North York, 33 km away
Ranked #10 because of its Google rating and trade focus: 4.7★ from 9,158 Google reviews, listed on Google as “HVAC contractor”.
Based in Barrie, 35 km away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 5,937 Google reviews, listed on Google as “HVAC contractor”.
Based in Richmond Hill, 16 km away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 223 Google reviews, listed on Google as “HVAC contractor”.
Based in King, 22 km away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 391 Google reviews, listed on Google as “HVAC contractor”.
Based in Markham, 26 km away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 1,319 Google reviews, listed on Google as “HVAC contractor”.
Based in Barrie, 35 km away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 2,540 Google reviews, listed on Google as “HVAC contractor”.
Based in Newmarket
Ranked #16 because of its Google rating and trade focus: 4.9★ from 40 Google reviews, listed on Google as “HVAC contractor”.
Based in Vaughan, 25 km away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 431 Google reviews, listed on Google as “HVAC contractor”.
Based in Newmarket
Ranked #18 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “HVAC contractor”.
Based in Markham, 27 km away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 836 Google reviews, listed on Google as “HVAC contractor”.
Based in Scarborough, 36 km away
Ranked #20 because of its Google rating and trade focus: 4.8★ from 3,715 Google reviews, listed on Google as “HVAC contractor”.
Based in Newmarket
Ranked #21 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Heating contractor”.
Based in East Gwillimbury, 4 km away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 137 Google reviews, listed on Google as “HVAC contractor”.
Based in Richmond Hill, 23 km away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 435 Google reviews, listed on Google as “HVAC contractor”.
Based in Richmond Hill, 24 km away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 465 Google reviews, listed on Google as “HVAC contractor”.
Based in Newmarket
Ranked #25 because of its Google rating and trade focus: 4.9★ from 103 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 636 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 |
|---|---|---|
| Ace air heating &A/C inc | In Newmarket | |
| Air Benders Mechanical Inc. | 5.0★ (2) | 21 km |
| Aire One North Heating & Cooling | In Newmarket | |
| Apadana Building Inc.: Home | In Newmarket | |
| BreezeCome Home Service/Quality Breeze 清风到家 服务到家 | 4.8★ (481) | 29 km |
| Caspian Breeze Heating and Air Conditioning | 5.0★ (2) | 20 km |
| Central Climate Control Inc. | In Newmarket | |
| Climate Air Heating & Air Conditioning | 4.8★ (841) | 36 km |
| Constant Home Comfort | 4.6★ (301) | 21 km |
| Eco Star Home Services Co. | 4.7★ (490) | 25 km |
| Elbo Mechanical Inc. | In Newmarket | |
| Enercare | 4.7★ (1,470) | 37 km |
| JJ HVAC Care Newmarket | 5.0★ (2) | In Newmarket |
| NT Mechanical - HVAC Licensed Contractors (Newmarket) | In Newmarket | |
| One Heating & Cooling | 5.0★ (16) | In Newmarket |
| Persi Air - Cooling and Heating Solutions | In Newmarket | |
| PRO CLIMATE | 4.9★ (242) | 27 km |
| Samcor Mechanical Inc | 5.0★ (1) | In Newmarket |
| TECHNO AIR HEAT | In Newmarket | |
| Toronto Heat Exchanger | 5.0★ (1) | In Newmarket |
US national ranges converted to CAD, not adjusted for Newmarket. 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 636 Newmarket 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 Newmarket 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 |