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Emergency HVAC Contractors in Ottawa, ON (2026)

Top 50 of 212 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 Ottawa: Francis Home Environment Heating and Air Conditioning, 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 Ottawa at a glance

Top emergency HVAC contractors in Ottawa at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Francis Home Environment Heating and Air Conditioning684.9★ (6,159)Ottawa24/7
2Reliance Holmes Ottawa Heating, Air Conditioning & Plumbing684.7★ (8,352)Ottawa24/7
3Anchor Home Comfort674.9★ (3,646)Ottawa24/7
4Enercare674.7★ (5,672)Ottawa24/7
5Enercare664.8★ (2,654)Ottawa24/7
6JD Swallow Heating & Cooling664.9★ (1,311)Ottawa24/7
7Ottawa Home Services664.9★ (1,200)Ottawa24/7
8Francis Plumbing Heating & Cooling664.8★ (1,470)Ottawa24/7
9AirZone HVAC Services654.9★ (1,010)Ottawa24/7
10Oria Heating and Cooling655.0★ (545)Ottawa24/7

Call an emergency HVAC contractor in Ottawa 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 Ottawa, 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 212 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.

  3. #3 Anchor Home Comfort

    Based in Ottawa

    67/100CR Score

    Ranked #3 because of its Google rating and trade focus: 4.9★ from 3,646 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 3,646 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1181 Parisien St, Ottawa, ON K1B 4W4
    View profile for Anchor Home Comfort(613) 704-4180

  4. #4 Enercare

    Based in Ottawa

    67/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.7★ from 5,672 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 5,672 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2160 Thurston Dr, Ottawa, ON K1G 6E1
    View profile for Enercare(613) 216-0023

  5. #5 Enercare

    Based in Ottawa

    66/100CR Score

    Ranked #5 because of its Google rating and trade focus: 4.8★ from 2,654 Google reviews, listed on Google as “Furnace repair service”.

    • 4.8★ from 2,654 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    50 Frank Nighbor Pl, Ottawa, ON K2V 1B9
    View profile for Enercare(613) 383-1210

  11. #11 Advanced HVAC Inc.

    Based in Ottawa

    65/100CR Score

    Ranked #11 because of its Google rating and trade focus: 4.8★ from 708 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 708 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5450 Canotek Rd #65, Gloucester, ON K1J 9G5
    View profile for Advanced HVAC Inc.(613) 833-9963

  13. #13 Apple HVAC

    Based in Ottawa

    64/100CR Score

    Ranked #13 because of its Google rating and trade focus: 5.0★ from 220 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 220 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1468 Chatelain Ave, Ottawa, ON K1Z 8B1
    View profile for Apple HVAC(613) 315-7325

  16. #16 Pro Duct Solutions

    Based in Ottawa

    63/100CR Score

    Ranked #16 because of its Google rating and trade focus: 4.7★ from 295 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 295 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    385 Besserer St #41, Ottawa, ON K1N 6B6
    View profile for Pro Duct Solutions(613) 617-7874

  17. #17 Tempzone Hvac

    Based in Ottawa

    62/100CR Score

    Ranked #17 because of its Google rating and trade focus: 5.0★ from 100 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 100 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    3399b McCarthy Rd, Ottawa, ON K1V 9G6
    View profile for Tempzone Hvac(613) 862-5551

  18. #18 Zenith Eco Energy

    Based in Ottawa

    62/100CR Score

    Ranked #18 because of its Google rating and trade focus: 4.9★ from 123 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 123 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2100 Thurston Dr #13, Ottawa, ON K1G 4K8
    View profile for Zenith Eco Energy(613) 800-9022

Top 50 of 212 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 Ottawa, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Home Service Group Inc.614.8★ (183)10 km
27Marathon HVAC615.0★ (46)In Ottawa
28Reid Heating and Cooling614.8★ (193)10 km
29Rogers Heating and Air Conditioning Inc614.9★ (54)In Ottawa
30Equal Air Heating Cooling Air Conditioning614.7★ (61)In Ottawa
31ServicePlus Heating and Cooling615.0★ (57)3 km
32RepairUs Commercial Refrigeration Ottawa Inc.615.0★ (39)In Ottawa
33ServicePlus Heating and Cooling614.9★ (37)In Ottawa
34The Energy Centre614.2★ (146)In Ottawa
35Ottawa Furnace Parts614.9★ (34)In Ottawa
36Ultra Air Heating and Cooling Inc.615.0★ (31)In Ottawa
37Crispo Home Comfort Inc.615.0★ (29)In Ottawa
38Capital Home Comfort Systems - Ottawa HVAC605.0★ (200)19 km
39HIKMA HVAC604.9★ (223)20 km
40AirMechanics605.0★ (21)In Ottawa
41Ericka's Heating, Cooling and Appliance604.4★ (40)In Ottawa
42ServicePlus Heating and Cooling605.0★ (21)In Ottawa
43Eco Green Home Comfort604.9★ (21)In Ottawa
44NKR HVAC604.9★ (160)19 km
45APEX CVAC605.0★ (18)In Ottawa
46Ideal Temp Heating and Cooling605.0★ (18)In Ottawa
47Peak Comfort HVAC605.0★ (18)In Ottawa
48ServicePlus Heating and Cooling604.9★ (99)16 km
49ServicePlus Heating and Cooling604.8★ (19)In Ottawa
50Core Climate Ltd.605.0★ (110)20 km

How we ranked emergency HVAC contractors in Ottawa

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 Ottawa: questions

Which HVAC contractors in Ottawa are open 24/7?

25 on this list post 24/7 hours, including Francis Home Environment Heating and Air Conditioning, Reliance Holmes Ottawa Heating, Air Conditioning & Plumbing, Anchor Home Comfort, Enercare and Enercare.

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

Francis Home Environment Heating and Air Conditioning is #1, with a CR Score of 68 out of 100 on emergency weights.

How are emergency HVAC contractors in Ottawa 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 Ottawa

  1. October 2026: CR Scores recalculated for 212 hvac contractors serving Ottawa.

More emergency and heating and cooling pages