651 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Milton: Reliance Heating, Air Conditioning & Plumbing, CR Score 92/100; 4.8★ from 27,515 Google reviews; open 24/7.
Best for emergencies (open 24/7): Reliance Heating, Air Conditioning & Plumbing, posts 24/7 hours; ranked #2 of 651.
Most-reviewed: Reliance Heating, Air Conditioning & Plumbing, 20,445 Google reviews at 4.8★, the most of 651 ranked after Reliance Heating, Air Conditioning & Plumbing; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
651 Milton HVAC contractors are ranked here by CR Score, from 8 published factors. 287 are open 24/7, 491 open Saturdays and 399 open Sundays, based on posted hours. The median Google rating is 4.9★ across 651 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Reliance Heating, Air Conditioning & Plumbing | 92 | 4.8★ (27,515) | Burlington, 19 km away | 24/7 | Overall |
| 2 | Reliance Heating, Air Conditioning & Plumbing | 92 | 4.8★ (20,445) | Mississauga, 21 km away | 24/7 | Emergencies, Most reviews |
| 3 | Enercare | 91 | 4.9★ (7,135) | Brampton, 21 km away | 24/7 | — |
| 4 | AtlasCare Heating & Cooling | 91 | 4.8★ (6,594) | Oakville, 16 km away | 24/7 | — |
| 5 | Enercare | 91 | 4.9★ (6,242) | Brampton, 23 km away | 24/7 | — |
| 6 | Coretemp Heating and Air | 90 | 5.0★ (139) | Milton | 24/7 | — |
| 7 | A1 Air Conditioning & Heating | 90 | 4.9★ (1,749) | Oakville, 19 km away | 24/7 | — |
| 8 | Flashe Gas | 90 | 5.0★ (567) | Burlington, 15 km away | 24/7 | — |
| 9 | Creature Comforts HVAC | 89 | 5.0★ (941) | Burlington, 21 km away | 24/7 | — |
| 10 | Enercare | 89 | 4.7★ (2,722) | Mississauga, 13 km away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 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: 4.8★ from 27,515 Google reviews, the most Google reviews on this list (27,515).
Based in Mississauga, 21 km away
Ranked #2 because of its Google rating and availability: 4.8★ from 20,445 Google reviews, open 24/7.
Based in Brampton, 21 km away
Ranked #3 because of its Google rating and availability: 4.9★ from 7,135 Google reviews, open 24/7.
Based in Oakville, 16 km away
Ranked #4 because of its Google rating and availability: 4.8★ from 6,594 Google reviews, open 24/7.
Based in Brampton, 23 km away
Ranked #5 because of its Google rating and availability: 4.9★ from 6,242 Google reviews, open 24/7.
Based in Milton
Ranked #6 because of its Google rating and availability: 5.0★ from 139 Google reviews, open 24/7.
Based in Oakville, 19 km away
Ranked #7 because of its Google rating and availability: 4.9★ from 1,749 Google reviews, open 24/7.
Based in Burlington, 15 km away
Ranked #8 because of its Google rating and availability: 5.0★ from 567 Google reviews, open 24/7.
Based in Burlington, 21 km away
Ranked #9 because of its Google rating and availability: 5.0★ from 941 Google reviews, open 24/7.
Based in Mississauga, 13 km away
Ranked #10 because of its Google rating and availability: 4.7★ from 2,722 Google reviews, open 24/7.
Based in Milton
Ranked #11 because of its Google rating and availability: 5.0★ from 92 Google reviews, open 24/7.
Based in Oakville, 17 km away
Ranked #12 because of its Google rating and availability: 4.8★ from 1,639 Google reviews, open 24/7.
Based in Burlington, 13 km away
Ranked #13 because of its Google rating and availability: 5.0★ from 285 Google reviews, open 24/7.
Based in Etobicoke, 31 km away
Ranked #14 because of its Google rating and availability: 4.9★ from 4,281 Google reviews, open 24/7.
Based in Brampton, 15 km away
Ranked #15 because of its Google rating and availability: 4.9★ from 537 Google reviews, open 24/7.
Based in Brampton, 24 km away
Ranked #16 because of its Google rating and availability: 4.8★ from 3,190 Google reviews, open 24/7.
Based in Vaughan, 40 km away
Ranked #17 because of its Google rating and availability: 4.9★ from 9,609 Google reviews, open 24/7.
Based in Mississauga, 13 km away
Ranked #18 because of its Google rating and availability: 5.0★ from 205 Google reviews, open 24/7.
Based in Milton
Ranked #19 because of its Google rating and availability: 4.9★ from 70 Google reviews, open 24/7.
Based in Burlington, 18 km away
Ranked #20 because of its Google rating and availability: 4.9★ from 503 Google reviews, open 24/7.
Based in Mississauga, 11 km away
Ranked #21 because of its Google rating and availability: 5.0★ from 143 Google reviews, open 24/7.
Based in Burlington, 20 km away
Ranked #22 because of its Google rating and availability: 4.7★ from 1,905 Google reviews, open 24/7.
Based in Milton
Ranked #23 because of its Google rating and availability: 5.0★ from 33 Google reviews, open 24/7.
Based in Milton
Ranked #24 because of its Google rating and availability: 5.0★ from 71 Google reviews, open 24/7.
Based in Burlington, 17 km away
Ranked #25 because of its Google rating and availability: 5.0★ from 148 Google reviews, open 24/7.
#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 651 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 |
|---|---|---|
| 3D AIR LTD LLC | 5.0★ (2) | 22 km |
| A-SUN- TECH AIR SYSTEM | 5.0★ (2) | 27 km |
| Active Air Heating and Air Conditioning | 1.0★ (2) | 15 km |
| Air In Motion | 5.0★ (2) | 18 km |
| Aire One Milton | Furnace Repair & Heat Pump Installation | In Milton | |
| Boonstra Heating and Air Conditioning | 4.7★ (4,641) | 36 km |
| BreezeCome Home Services/Quality Breeze清风到家 服务到家 | 4.8★ (112) | 14 km |
| Cambridge Heating and Home Services | 3.0★ (2) | 19 km |
| Canadian Breeze Inc. | In Milton | |
| Family HVAC Inc | 4.9★ (136) | 19 km |
| Grand Oak Heating and Cooling | 5.0★ (2) | 22 km |
| Hy-Pro Plumbing & Drain Cleaning of Milton | 4.8★ (225) | In Milton |
| Jess-Don Dunford Ltd | 5.0★ (2) | 27 km |
| Northshore Inc. | 5.0★ (2) | In Milton |
| Ontario In-Floor Heating | 1.0★ (2) | 19 km |
| Precision HVAC Mech Inc | 4.9★ (429) | 17 km |
| TEMPTAMER HVAC CANADA INC. | In Milton | |
| Thermal Group Services | In Milton | |
| Westend Air Systems Inc. | 5.0★ (2) | 22 km |
| Worry Free Maintenance and Mechanical Inc. | 5.0★ (2) | 18 km |
US national ranges converted to CAD, not adjusted for Milton. 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 651 Milton 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 Milton 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 |