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Emergency HVAC Contractors in Keswick, ON (2026)

Top 50 of 227 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 Keswick: Reliance Yanch 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 Keswick at a glance

Top emergency HVAC contractors in Keswick at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Reliance Yanch Heating, Air Conditioning & Plumbing654.8★ (5,937)Barrie, 18 km away24/7
2Affordable Comfort644.9★ (2,540)Barrie, 19 km away24/7
3Heat and Cool Brothers Inc.635.0★ (162)Keswick24/7
4Enercare634.7★ (2,051)Barrie, 18 km away24/7
5DC Comfort Air635.0★ (145)Oshawa, 4 km away24/7
6Climate Air Heating & Air Conditioning624.8★ (841)Barrie, 19 km away24/7
7Summers and Smith Cooling & Heating Limited624.9★ (1,559)Aurora, 28 km away24/7
8Black Forest624.8★ (532)East Gwillimbury, 17 km away24/7
9Custom Comfort ClimateCare624.9★ (738)Barrie, 23 km away24/7
10Air Source Home Comfort614.9★ (554)Barrie, 23 km away24/7

Call an emergency HVAC contractor in Keswick 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 Keswick, 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 227 is on the HVAC contractors page.

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  2. #2 Affordable Comfort

    Based in Barrie, 19 km away

    64/100CR Score

    Ranked #2 because of its Google rating and trade focus: 4.9★ from 2,540 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 2,540 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    92 Commerce Park Dr Unit 8, Barrie, ON L4N 8W8
    View profile for Affordable Comfort(705) 503-4328

  4. #4 Enercare

    Based in Barrie, 18 km away

    63/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.7★ from 2,051 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 2,051 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    680 Huronia Rd, Barrie, ON L4N 6C6
    View profile for Enercare(705) 408-1098

  5. #5 DC Comfort Air

    Based in Oshawa, 4 km away

    63/100CR Score

    Ranked #5 because of its Google rating and trade focus: 5.0★ from 145 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 145 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for DC Comfort Air(647) 451-6610

  8. #8 Black Forest

    Based in East Gwillimbury, 17 km away

    62/100CR Score

    Ranked #8 because of its Google rating and trade focus: 4.8★ from 532 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 532 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    16 Mt Albert Rd, East Gwillimbury, ON L9N 1K4
    View profile for Black Forest(905) 252-9994

  11. #11 North Wind HVAC

    Based in Innisfil, 10 km away

    61/100CR Score

    Ranked #11 because of its Google rating and trade focus: 4.8★ from 128 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 128 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2223 Willard Ave, Innisfil, ON L9S 2C1
    View profile for North Wind HVAC(705) 828-4482

  12. #12 Central Heating

    Based in Barrie, 19 km away

    61/100CR Score

    Ranked #12 because of its Google rating and trade focus: 4.8★ from 306 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 306 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    647 Welham Rd Unit #2, Barrie, ON L4N 0B7
    View profile for Central Heating(705) 315-8822

  14. #14 Ambient Air Systems

    Based in East Gwillimbury, 10 km away

    61/100CR Score

    Ranked #14 because of its Google rating and trade focus: 4.8★ from 113 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 113 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    157 High St, Sutton, ON L0E 1R0
    View profile for Ambient Air Systems(905) 713-5398

  17. #17 Smile HVAC

    Based in Barrie, 16 km away

    60/100CR Score

    Ranked #17 because of its Google rating and trade focus: 5.0★ from 113 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 113 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    39 Maple Crown Terrace, Barrie, ON L4M 7H4
    View profile for Smile HVAC(437) 777-4555

  22. #22 CORH

    Based in Barrie, 21 km away

    60/100CR Score

    Ranked #22 because of its Google rating and trade focus: 4.9★ from 126 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 126 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    322 King St Unit #3, Barrie, ON L4N 6L2
    View profile for CORH(705) 517-0174

  24. #24 Zeeco Services Ltd

    Based in Barrie, 18 km away

    59/100CR Score

    Ranked #24 because of its Google rating and trade focus: 4.6★ from 140 Google reviews, listed on Google as “HVAC contractor”.

    • 4.6★ from 140 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    21 Fenchurch Manor, Barrie, ON L4N 5X7
    View profile for Zeeco Services Ltd(705) 309-6793

Top 50 of 227 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 Keswick, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26The Shock Doctors Barrie Electricians594.9★ (109)21 km
27Black Forest594.9★ (132)24 km
28Aire One Heating & Cooling | Furnace Installation & Repair Barrie, HVAC, Heat Pump & AC Service594.8★ (117)22 km
29Canadian HVAC and Gas595.0★ (20)10 km
30Superior Plumbing & Heating of Barrie584.7★ (68)19 km
31RK Air Systems585.0★ (38)19 km
32Trade Army Inc.584.9★ (55)21 km
33Barrie Heating & Air Conditioning584.8★ (88)25 km
34Bay Tech Heating and Cooling585.0★ (223)39 km
35Climax Heating & Air Conditioning & Condo HVAC Service584.9★ (40)22 km
36Marx Mechanical Heating and Cooling584.9★ (115)31 km
37Fox Services585.0★ (22)17 km
38Anything Gas Heating & AC584.6★ (31)18 km
39Sabbouh Mechanical585.0★ (32)21 km
40705 HVAC585.0★ (27)20 km
41Superior Plumbing & Heating of Newmarket574.8★ (38)23 km
42Tristar Mechanical Services574.8★ (22)18 km
43Climate Air Heating & Air Conditioning574.7★ (212)38 km
44Don's Heating and Cooling Ltd.574.8★ (139)35 km
45Therwood Heating and Cooling574.8★ (62)28 km
46Barrie Furnace Repair575.0★ (17)18 km
47Blu Hvac Inc575.0★ (32)24 km
48Mr. Song Heating & Cooling Inc.574.6★ (44)23 km
49Garry Mechanical inc575.0★ (27)23 km
50Biznest Canada Inc575.0★ (23)23 km

How we ranked emergency HVAC contractors in Keswick

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. 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
Reputation15%Google star rating, adjusted for how many reviews back it
Credentials15%Active state license, bond and workers’ comp on file
Review volume10%Number of Google reviews, compared with the most-reviewed business on the list
Recency5%Share of reviews from the last 12 months
Availability15%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%How clearly the business does this trade (its Google category and name)
Proximity5%Based in the city scores highest, less the farther away it is
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodically
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there are

Emergency HVAC contractors in Keswick: questions

Which HVAC contractors in Keswick are open 24/7?

25 on this list post 24/7 hours, including Reliance Yanch Heating, Air Conditioning & Plumbing, Affordable Comfort, Heat and Cool Brothers Inc., Enercare and DC Comfort Air.

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

Reliance Yanch Heating, Air Conditioning & Plumbing is #1, with a CR Score of 65 out of 100 on emergency weights.

How are emergency HVAC contractors in Keswick ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. 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 Keswick

  1. October 2026: CR Scores recalculated for 227 hvac contractors serving Keswick.

More emergency and heating and cooling pages