212 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Ottawa: Francis Home Environment Heating and Air Conditioning, CR Score 68/100; 4.9★ from 6,159 Google reviews; open 24/7.
Best for emergencies (open 24/7): Anchor Home Comfort, posts 24/7 hours; ranked #2 of 212.
Most-reviewed: Reliance Holmes Ottawa Heating, Air Conditioning & Plumbing, 8,352 Google reviews at 4.7★, the most of 212 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
212 Ottawa HVAC contractors are ranked here by CR Score, from ten published factors. 106 are open 24/7, 139 open Saturdays and 121 open Sundays, based on posted hours. The median Google rating is 4.9★ across 212 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Francis Home Environment Heating and Air Conditioning | 68 | 4.9★ (6,159) | Ottawa | 24/7 | Overall |
| 2 | Anchor Home Comfort | 67 | 4.9★ (3,646) | Ottawa | 24/7 | Emergencies |
| 3 | Reliance Holmes Ottawa Heating, Air Conditioning & Plumbing | 67 | 4.7★ (8,352) | Ottawa | 24/7 | Most reviews |
| 4 | Enercare | 66 | 4.7★ (5,672) | Ottawa | 24/7 | — |
| 5 | Enercare | 66 | 4.8★ (2,654) | Ottawa | 24/7 | — |
| 6 | JD Swallow Heating & Cooling | 66 | 4.9★ (1,311) | Ottawa | 24/7 | — |
| 7 | Ottawa Home Services | 65 | 4.9★ (1,200) | Ottawa | 24/7 | — |
| 8 | AirZone HVAC Services | 65 | 4.9★ (1,010) | Ottawa | 24/7 | — |
| 9 | Francis Plumbing Heating & Cooling | 65 | 4.8★ (1,470) | Ottawa | 24/7 | — |
| 10 | Oria Heating and Cooling | 65 | 5.0★ (545) | Ottawa | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 6,159 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #2 because of its Google rating and trade focus: 4.9★ from 3,646 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #3 because of its Google rating and review volume: 4.7★ from 8,352 Google reviews, the most in Ottawa.
Based in Ottawa
Ranked #4 because of its Google rating and trade focus: 4.7★ from 5,672 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #5 because of its Google rating and trade focus: 4.8★ from 2,654 Google reviews, listed on Google as “Furnace repair service”.
Based in Ottawa
Ranked #6 because of its Google rating and trade focus: 4.9★ from 1,311 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #7 because of its Google rating and trade focus: 4.9★ from 1,200 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #8 because of its Google rating and trade focus: 4.9★ from 1,010 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #9 because of its Google rating and trade focus: 4.8★ from 1,470 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #10 because of its Google rating and trade focus: 5.0★ from 545 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #11 because of its Google rating and trade focus: 5.0★ from 341 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #12 because of its Google rating and trade focus: 4.8★ from 708 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #13 because of its Google rating and trade focus: 5.0★ from 220 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #14 because of its Google rating and trade focus: 5.0★ from 184 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #15 because of its Google rating and trade focus: 4.8★ from 329 Google reviews, listed on Google as “Heating contractor”.
Based in Ottawa
Ranked #16 because of its Google rating and trade focus: 4.7★ from 295 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #17 because of its Google rating and trade focus: 5.0★ from 100 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #18 because of its Google rating and trade focus: 4.9★ from 123 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #19 because of its Google rating and trade focus: 4.9★ from 106 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #20 because of its Google rating and trade focus: 4.7★ from 151 Google reviews, listed on Google as “HVAC contractor”.
Based in Nepean, 10 km away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 204 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #22 because of its Google rating and trade focus: 5.0★ from 54 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #23 because of its Google rating and trade focus: 5.0★ from 53 Google reviews, listed on Google as “HVAC contractor”.
Based in Ottawa
Ranked #24 because of its Google rating and trade focus: 5.0★ from 46 Google reviews, listed on Google as “HVAC contractor”.
Based in Nepean, 9 km away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 200 Google reviews, listed on Google as “HVAC contractor”.
#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 212 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 |
|---|---|---|
| Airotech | 5.0★ (1) | In Ottawa |
| Aviva Heating And Air Conditioning | 5.0★ (2) | In Ottawa |
| Belanger Heating & Air Conditioning | 5.0★ (2) | In Ottawa |
| Ericka's Heating, Cooling and Appliance | 4.4★ (40) | In Ottawa |
| First Home Solutions | 5.0★ (1) | In Ottawa |
| Greener Home Ottawa | 5.0★ (2) | In Ottawa |
| HyEnd Construction & Demolition | In Ottawa | |
| Isaak Heating and Cooling | 5.0★ (2) | In Ottawa |
| Lesage & Turgeon Electrique | In Ottawa | |
| NKR HVAC | 4.9★ (160) | 19 km |
| Pro Desk at RONA+ | 5.0★ (1) | In Ottawa |
| Renato's Pool Heater Sales and Service | 5.0★ (2) | In Ottawa |
| RenoAssistance - Renovation Contractor Referral Service | 1.0★ (1) | In Ottawa |
| S&R Mechanical | 4.3★ (12) | In Ottawa |
| ServicePlus Heating and Cooling | 4.8★ (19) | In Ottawa |
| Smart Tech Mechanical Plumbing & Heating | In Ottawa | |
| Tamy Mechanical Inc. | In Ottawa | |
| Tech 2000 Plumbing & Heating | 5.0★ (1) | In Ottawa |
| Ted's Plumbing & Heating | 5.0★ (1) | In Ottawa |
| The Energy Centre | 4.2★ (146) | In Ottawa |
US national ranges converted to CAD, not adjusted for Ottawa. 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 212 Ottawa HVAC contractors on ten 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. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, 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 Ottawa data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |