865 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Mississauga: Reliance Heating, Air Conditioning & Plumbing, CR Score 67/100; 4.8★ from 20,445 Google reviews; open 24/7.
Best for emergencies (open 24/7): AtlasCare Heating & Cooling, posts 24/7 hours; ranked #2 of 865.
Most-reviewed: Reliance Heating, Air Conditioning & Plumbing, 27,515 Google reviews at 4.8★, the most of 865 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
865 Mississauga HVAC contractors are ranked here by CR Score, from ten published factors. 373 are open 24/7, 665 open Saturdays and 543 open Sundays, based on posted hours. The median Google rating is 4.9★ across 865 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Reliance Heating, Air Conditioning & Plumbing | 67 | 4.8★ (20,445) | Mississauga | 24/7 | Overall |
| 2 | AtlasCare Heating & Cooling | 65 | 4.8★ (6,594) | Oakville, 8 km away | 24/7 | Emergencies |
| 3 | Enercare | 64 | 4.9★ (6,242) | Brampton, 13 km away | 24/7 | — |
| 4 | Enercare | 64 | 4.7★ (2,722) | Mississauga | 24/7 | — |
| 5 | Enercare | 64 | 4.9★ (4,281) | Etobicoke, 12 km away | 24/7 | — |
| 6 | Enercare | 64 | 4.9★ (7,135) | Brampton, 18 km away | 24/7 | — |
| 7 | Furnace King Home Services | 64 | 4.9★ (701) | Mississauga | 24/7 | — |
| 8 | Reliance Heating, Air Conditioning & Plumbing | 63 | 4.8★ (27,515) | Burlington, 27 km away | 24/7 | Most reviews |
| 9 | Aire One Peel | Furnace Repair Mississauga, Heat Pump Installation & AC Service | 63 | 4.9★ (549) | Mississauga | 24/7 | — |
| 10 | Enercare | 63 | 4.9★ (9,609) | Vaughan, 24 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: 4.8★ from 20,445 Google reviews, listed on Google as “HVAC contractor”.
Based in Oakville, 8 km away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 6,594 Google reviews, listed on Google as “HVAC contractor”.
Based in Brampton, 13 km away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 6,242 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #4 because of its Google rating and trade focus: 4.7★ from 2,722 Google reviews, listed on Google as “HVAC contractor”.
Based in Etobicoke, 12 km away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 4,281 Google reviews, listed on Google as “HVAC contractor”.
Based in Brampton, 18 km away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 7,135 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #7 because of its Google rating and trade focus: 4.9★ from 701 Google reviews, listed on Google as “HVAC contractor”.
Based in Burlington, 27 km away
Ranked #8 because of its Google rating and review volume: 4.8★ from 27,515 Google reviews, the most in Mississauga.
Based in Mississauga
Ranked #9 because of its Google rating and trade focus: 4.9★ from 549 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Vaughan, 24 km away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 9,609 Google reviews, listed on Google as “HVAC contractor”.
Based in North York, 22 km away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 11,186 Google reviews, listed on Google as “HVAC contractor”.
Based in Brampton, 12 km away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 3,190 Google reviews, listed on Google as “HVAC contractor”.
Based in Oakville, 11 km away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 1,749 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #14 because of its Google rating and trade focus: 5.0★ from 205 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #15 because of its Google rating and trade focus: 5.0★ from 143 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #16 because of its Google rating and trade focus: 4.9★ from 186 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #17 because of its Google rating and trade focus: 5.0★ from 125 Google reviews, listed on Google as “HVAC contractor”.
Based in Milton, 2 km away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 139 Google reviews, listed on Google as “HVAC contractor”.
Based in Brampton, 13 km away
Ranked #19 because of its Google rating and trade focus: 4.7★ from 1,957 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #20 because of its Google rating and trade focus: 5.0★ from 120 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #21 because of its Google rating and trade focus: 4.9★ from 148 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #22 because of its Google rating and trade focus: 4.9★ from 158 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #23 because of its Google rating and trade focus: 4.9★ from 487 Google reviews, listed on Google as “HVAC contractor”.
Based in Mississauga
Ranked #24 because of its Google rating and trade focus: 5.0★ from 104 Google reviews, listed on Google as “HVAC contractor”.
Based in Oakville, 17 km away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 1,639 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 865 ranked HVAC contractors here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Evam Canada Inc. | 61 | 4.9★ (125) | In Mississauga |
| 27 | Reliance Heating, Air Conditioning & Plumbing | 61 | 4.9★ (10,870) | 37 km |
| 28 | Convertible Heating and Air Conditioning | 61 | 5.0★ (88) | In Mississauga |
| 29 | HVAC-Group | 61 | 5.0★ (237) | In Mississauga |
| 30 | heavenlyair.ca | 61 | 5.0★ (76) | In Mississauga |
| 31 | Maher Heating & Cooling | 61 | 4.7★ (197) | In Mississauga |
| 32 | Airmaxx heating & airconditioning inc | 61 | 4.9★ (87) | In Mississauga |
| 33 | Hudson Condominium Solutions Inc | 61 | 5.0★ (694) | 22 km |
| 34 | Leite Group - Hvac & Hydronics | 61 | 5.0★ (64) | In Mississauga |
| 35 | QuickFast Service Company | 61 | 4.7★ (157) | In Mississauga |
| 36 | The Heatman Heating and Cooling | 61 | 4.9★ (78) | In Mississauga |
| 37 | Furnace & AC Experts | 61 | 4.8★ (362) | In Mississauga |
| 38 | Go Lime | 60 | 4.8★ (6,512) | 34 km |
| 39 | Smile HVAC | 60 | 5.0★ (1,314) | 29 km |
| 40 | Air Factor | 60 | 4.9★ (65) | In Mississauga |
| 41 | Bullet Proof Heating & Cooling | 60 | 4.9★ (168) | 9 km |
| 42 | Northwest Gas Ltd | 60 | 5.0★ (187) | 13 km |
| 43 | Ontario Energy Care HVAC Services | 60 | 4.6★ (168) | In Mississauga |
| 44 | Atomic Air - Etobicoke | 60 | 5.0★ (148) | 12 km |
| 45 | Reliance Heating, Air Conditioning & Plumbing | 60 | 4.7★ (9,158) | 34 km |
| 46 | Brooks Heating & Air | 60 | 4.9★ (537) | 21 km |
| 47 | Reliable HVAC Canada | 60 | 4.9★ (50) | In Mississauga |
| 48 | Creature Comforts HVAC | 60 | 5.0★ (941) | 30 km |
| 49 | Flashe Gas | 60 | 5.0★ (567) | 26 km |
| 50 | Home Trade Standards - Condo HVAC Specialists | 60 | 5.0★ (464) | 25 km |
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 |
|---|---|---|
| 3D AIR LTD LLC | 5.0★ (2) | In Mississauga |
| A-SUN- TECH AIR SYSTEM | 5.0★ (2) | 20 km |
| A&J Mechanical Systems Inc | 5.0★ (1) | In Mississauga |
| Air In Motion | 5.0★ (2) | 8 km |
| Airmaxx Heating & Airconditioning | 5.0★ (2) | 13 km |
| Cambridge Heating and Home Services | 3.0★ (2) | In Mississauga |
| Dasstab | 5.0★ (2) | 12 km |
| Enercare | 4.8★ (1,154) | 26 km |
| ERM Commercial Construction Management | In Mississauga | |
| For Saving Heating & Cooling | 4.9★ (36) | In Mississauga |
| Grand Oak Heating and Cooling | 5.0★ (2) | 15 km |
| K & D HVAC & Construction | 5.0★ (2) | In Mississauga |
| Maple Air - Heating, Cooling & Electrical | 4.8★ (1,309) | 26 km |
| Mr HVAC Services Inc | In Mississauga | |
| MYKO Mechanical Ltd. | 1.0★ (2) | 13 km |
| On-Demand HVAC Solutions | 5.0★ (1) | In Mississauga |
| Precision HVAC Mech Inc | 4.9★ (429) | 20 km |
| Reliance Heating, Air Conditioning & Plumbing | 4.7★ (1,854) | 25 km |
| Sentral HVAC | 5.0★ (1) | In Mississauga |
| Simco Inc | 5.0★ (2) | 11 km |
US national ranges converted to CAD, not adjusted for Mississauga. 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 865 Mississauga 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 Mississauga 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 |