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Emergency HVAC Contractors in Milton, ON (2026)

Top 50 of 651 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank

25 of the 50 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.

If you smell gas, leave the building now and call your gas utility or 911 from outside.

The short answer

  1. 1

    #1 for emergency heating and cooling in Milton: Reliance Heating, Air Conditioning & Plumbing, open 24/7.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

Top emergency HVAC contractors in Milton at a glance

Top emergency HVAC contractors in Milton at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Reliance Heating, Air Conditioning & Plumbing934.8★ (27,515)Burlington, 19 km away24/7
2Reliance Heating, Air Conditioning & Plumbing924.8★ (20,445)Mississauga, 21 km away24/7
3AtlasCare Heating & Cooling914.8★ (6,594)Oakville, 16 km away24/7
4Enercare914.9★ (7,135)Brampton, 21 km away24/7
5Enercare914.9★ (6,242)Brampton, 23 km away24/7
6Coretemp Heating and Air905.0★ (139)Milton24/7
7Enercare904.7★ (2,722)Mississauga, 13 km away24/7
8A1 Air Conditioning & Heating904.9★ (1,749)Oakville, 19 km away24/7
9Abbey Air Home Services by Enercare904.8★ (1,639)Oakville, 17 km away24/7
10Flashe Gas905.0★ (567)Burlington, 15 km away24/7

Call an emergency HVAC contractor in Milton now

24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.

The 50 emergency HVAC contractors in Milton, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 651 is on the HVAC contractors page.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  4. #4 Enercare

    Based in Brampton, 21 km away

    91/100CR Score

    Ranked #4 because of its Google rating and availability: 4.9★ from 7,135 Google reviews, open 24/7.

    • 4.9★ from 7,135 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5 Lowry Dr, Brampton, ON L7A 1A3
    View profile for Enercare(905) 488-2186

  5. #5 Enercare

    Based in Brampton, 23 km away

    91/100CR Score

    Ranked #5 because of its Google rating and availability: 4.9★ from 6,242 Google reviews, open 24/7.

    • 4.9★ from 6,242 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    278 Rutherford Rd S, Brampton, ON L6W 3K7
    View profile for Enercare(905) 488-2187

  7. #7 Enercare

    Based in Mississauga, 13 km away

    90/100CR Score

    Ranked #7 because of its Google rating and availability: 4.7★ from 2,722 Google reviews, open 24/7.

    • 4.7★ from 2,722 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    4020 B Sladeview Crescent, Mississauga, ON L5L 6B1
    View profile for Enercare(905) 234-1578

  10. #10 Flashe Gas

    Based in Burlington, 15 km away

    90/100CR Score

    Ranked #10 because of its Google rating and availability: 5.0★ from 567 Google reviews, open 24/7.

    • 5.0★ from 567 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for Flashe Gas(289) 244-2084

  15. #15 Enercare

    Based in Etobicoke, 31 km away

    89/100CR Score

    Ranked #15 because of its Google rating and availability: 4.9★ from 4,281 Google reviews, open 24/7.

    • 4.9★ from 4,281 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    123 Judge Rd, Etobicoke, ON M8Z 3L2
    View profile for Enercare(416) 849-6579

  17. #17 Enercare

    Based in Vaughan, 40 km away

    89/100CR Score

    Ranked #17 because of its Google rating and availability: 4.9★ from 9,609 Google reviews, open 24/7.

    • 4.9★ from 9,609 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    261 Trowers Rd, Vaughan, ON L4L 5Z8
    View profile for Enercare(905) 266-0219

  18. #18 Enercare

    Based in Burlington, 20 km away

    89/100CR Score

    Ranked #18 because of its Google rating and availability: 4.7★ from 1,905 Google reviews, open 24/7.

    • 4.7★ from 1,905 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for Enercare(905) 538-1102

  23. #23 Real Deal HVAC

    Based in Mississauga, 11 km away

    88/100CR Score

    Ranked #23 because of its Google rating and availability: 5.0★ from 143 Google reviews, open 24/7.

    • 5.0★ from 143 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5625 Topaz Pl, Mississauga, ON L5M 7B7
    View profile for Real Deal HVAC(647) 280-6626

  25. #25 Dr HVAC

    Based in Brampton, 24 km away

    88/100CR Score

    Ranked #25 because of its Google rating and availability: 4.7★ from 1,957 Google reviews, open 24/7.

    • 4.7★ from 1,957 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    215 Advance Blvd #1, Brampton, ON L6T 4V9
    View profile for Dr HVAC(905) 927-5581

Top 50 of 651 HVAC contractors by emergency score

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.

HVAC contractors in Milton, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Oosterveld Heating & Air Conditioning884.8★ (1,575)27 km
27Modern Mechanical Solutions885.0★ (33)In Milton
28Halton HVAC Services884.7★ (62)In Milton
29Constant Breeze HVAC885.0★ (71)In Milton
30Aire One Heating & Cooling Cambridge884.9★ (2,155)36 km
31Aire One Peel | Furnace Repair Mississauga, Heat Pump Installation & AC Service874.9★ (549)25 km
32Infinite Home Comfort875.0★ (148)17 km
33Danlex Gas875.0★ (89)13 km
34Furnace King Home Services874.9★ (701)27 km
35KMC Heating and Cooling Services Inc. Ontario, Canada875.0★ (118)16 km
36Shipton's Heating & Cooling Ltd874.8★ (2,204)33 km
37AirTemp HVAC Furnace and Air Conditioner of Hamilton875.0★ (164)19 km
38Boonstra Heating and Air Conditioning874.7★ (4,641)36 km
39Hy-Mark Home Comfort874.8★ (450)22 km
40Appleby Systems Heating & Cooling874.8★ (241)17 km
41Aido Climate Solutions Inc.874.9★ (529)28 km
42Balanced Heating Cooling & Refrigeration Limited875.0★ (37)7 km
43Longhouse Electric875.0★ (120)19 km
44Tamas Mechanical874.9★ (158)18 km
45Absolute Comfort Heating & Air Conditioning874.9★ (186)20 km
46Dynamic Heating & Cooling875.0★ (742)36 km
47North Star HVAC874.9★ (270)24 km
48Spurr Heating & Air Conditioning874.9★ (1,184)36 km
49BreezeCome Home Services/Quality Breeze清风到家 服务到家874.8★ (112)14 km
50Family HVAC Inc874.9★ (136)19 km

How we ranked emergency HVAC contractors in Milton

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed from
Reputation25%Bayesian-adjusted Google star rating
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2
Review volume10%log10(reviews + 1) against the list maximum
Recency10%Share of reviews from the last 12 months
Availability20%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radius
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)

Emergency HVAC contractors in Milton: questions

Which HVAC contractors in Milton are open 24/7?

25 on this list post 24/7 hours, including Reliance Heating, Air Conditioning & Plumbing, Reliance Heating, Air Conditioning & Plumbing, AtlasCare Heating & Cooling, Enercare and Enercare.

Who is ranked #1 for emergency heating and cooling in Milton, ON?

Reliance Heating, Air Conditioning & Plumbing is #1, with a CR Score of 93 out of 100 on emergency weights.

How are emergency HVAC contractors in Milton ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

What should I do before the HVAC contractor arrives?

If you smell gas, leave the building now and call your gas utility or 911 from outside.

How many emergency HVAC contractors here list a phone number?

25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Milton

  1. October 2026: CR Scores recalculated for 651 hvac contractors serving Milton.
  2. October 2026: 4 duplicate listings merged.

More emergency and heating and cooling pages