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Emergency HVAC Contractors in Cambridge, ON (2026)

Top 50 of 374 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 Cambridge: 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 Cambridge at a glance

Top emergency HVAC contractors in Cambridge at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Reliance Heating, Air Conditioning & Plumbing684.7★ (9,230)Cambridge24/7
2Aire One Heating & Cooling Cambridge664.9★ (2,155)Cambridge24/7
3Boehmers/Cronin Emery Home Services by Enercare664.8★ (1,534)Cambridge24/7
4Aire One Heating & Cooling KW654.8★ (9,448)Kitchener, 17 km away24/7
5Hammond Home Services by Enercare644.6★ (1,022)Cambridge24/7
6Able Air Conditioning & Heating645.0★ (1,247)Kitchener, 16 km away24/7
7Total Aire Care Inc.645.0★ (857)Kitchener, 12 km away24/7
8Reliance Heating, Air Conditioning & Plumbing634.8★ (4,116)Brantford, 23 km away24/7
9City Heating and Cooling634.8★ (273)Cambridge24/7
10Advance Heating & Cooling KW635.0★ (451)Kitchener, 13 km away24/7

Call an emergency HVAC contractor in Cambridge 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 Cambridge, 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 374 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.

  7. #7 Total Aire Care Inc.

    Based in Kitchener, 12 km away

    64/100CR Score

    Ranked #7 because of its Google rating and trade focus: 5.0★ from 857 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 857 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    299 Manitou Dr A, Kitchener, ON N2C 1L5
    View profile for Total Aire Care Inc.(226) 894-1000

  12. #12 LG Home Comfort KWC

    Based in Kitchener, 15 km away

    62/100CR Score

    Ranked #12 because of its Google rating and trade focus: 4.9★ from 674 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 674 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    20 Hanson Ave, Kitchener, ON N2C 2E2
    View profile for LG Home Comfort KWC(226) 289-1301

  20. #20 Valley Mechanical

    Based in Cambridge

    61/100CR Score

    Ranked #20 because of its Google rating and trade focus: 5.0★ from 54 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 54 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    58 Nickolas Crescent, Cambridge, ON N3C 3K7
    View profile for Valley Mechanical(519) 994-4822

  21. #21 Air and Water Care

    Based in Kitchener, 15 km away

    61/100CR Score

    Ranked #21 because of its Google rating and trade focus: 5.0★ from 203 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 203 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    169 Seabrook Dr, Kitchener, ON N2R 0E6
    View profile for Air and Water Care(226) 242-4328

Top 50 of 374 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 Cambridge, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Hy-Mark Home Comfort614.8★ (450)20 km
27Platinum Home Comfort615.0★ (36)In Cambridge
28ThermalCare Heating & Cooling614.9★ (41)In Cambridge
29Local Heating And Cooling615.0★ (397)25 km
30Unique Air604.9★ (187)17 km
31Ultra Comfort Cambridge604.0★ (146)In Cambridge
32Air Expert Home Comfort Inc604.6★ (155)12 km
33Regional Air | Furnace Repair - Service - Installation604.9★ (132)17 km
34Canadian Heating and Air Conditioning Inc.604.6★ (269)19 km
35Enercare604.7★ (1,905)38 km
36Trade-Mark Industrial Inc594.0★ (54)In Cambridge
37Tri City Heating and Cooling Inc594.9★ (109)18 km
38KS Heating & Cooling594.8★ (16)In Cambridge
39ELEVATE AIR595.0★ (48)13 km
40Guest Plumbing & HVAC Ancaster & Hamilton- Commercial & Residential Services594.8★ (452)30 km
41IsoTherm Mechanical Inc.595.0★ (13)In Cambridge
42Total Home Energy Systems594.9★ (268)27 km
43The Heating & Cooling Guys595.0★ (13)In Cambridge
44PT HVAC SOLUTIONS INC594.7★ (15)In Cambridge
45Arthur's Heating & Cooling594.9★ (120)20 km
46Assurance Heating and Cooling594.9★ (87)19 km
47Flashe Gas595.0★ (567)38 km
48Westside Home Comfort595.0★ (11)In Cambridge
49Modern Climate Heating and Cooling Inc.595.0★ (10)In Cambridge
50MRJ Mechanical Inc.594.4★ (14)In Cambridge

How we ranked emergency HVAC contractors in Cambridge

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 Cambridge: questions

Which HVAC contractors in Cambridge are open 24/7?

25 on this list post 24/7 hours, including Reliance Heating, Air Conditioning & Plumbing, Aire One Heating & Cooling Cambridge, Boehmers/Cronin Emery Home Services by Enercare, Aire One Heating & Cooling KW and Hammond Home Services by Enercare.

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

Reliance Heating, Air Conditioning & Plumbing is #1, with a CR Score of 68 out of 100 on emergency weights.

How are emergency HVAC contractors in Cambridge 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 Cambridge

  1. October 2026: CR Scores recalculated for 374 hvac contractors serving Cambridge.
  2. October 2026: 1 duplicate listing merged.

More emergency and heating and cooling pages