68/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 9,448 Google reviews, the most in Kitchener.
- 4.8★ from 9,448 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1069 Victoria St N, Kitchener, ON N2B 3C7
Best HVAC Contractors in Kitchener, ON (2026)
287 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Kitchener: Aire One Heating & Cooling KW, CR Score 68/100; 4.8★ from 9,448 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Able Air Conditioning & Heating, posts 24/7 hours; ranked #2 of 287.
- 6
Most-reviewed: Reliance Heating, Air Conditioning & Plumbing, 9,230 Google reviews at 4.7★, the most of 287 ranked after Aire One Heating & Cooling KW; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
287 Kitchener HVAC contractors are ranked here by CR Score, from ten published factors. 115 are open 24/7, 160 open Saturdays and 137 open Sundays, based on posted hours. The median Google rating is 4.9★ across 287 rated businesses.
Top 10 HVAC contractors in Kitchener at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Aire One Heating & Cooling KW | 68 | 4.8★ (9,448) | Kitchener | 24/7 | Overall |
| 2 | Able Air Conditioning & Heating | 66 | 5.0★ (1,247) | Kitchener | 24/7 | Emergencies |
| 3 | Total Aire Care Inc. | 65 | 5.0★ (857) | Kitchener | 24/7 | — |
| 4 | Advance Heating & Cooling KW | 65 | 5.0★ (451) | Kitchener | 24/7 | — |
| 5 | LG Home Comfort KWC | 65 | 4.9★ (674) | Kitchener | 24/7 | — |
| 6 | Reliance Heating, Air Conditioning & Plumbing | 64 | 4.7★ (9,230) | Cambridge, 18 km away | 24/7 | Most reviews |
| 7 | Infiniti Air Kitchener | Furnace Repair & Heat Pump Installation | AC Services | 64 | 4.9★ (447) | Kitchener | 24/7 | — |
| 8 | 365 Heating, Cooling, Plumbing & Electrical | 64 | 4.9★ (378) | Kitchener | 24/7 | — |
| 9 | Air Comfort Mechanical Inc. | 64 | 5.0★ (233) | Kitchener | 24/7 | — |
| 10 | Aire One Heating & Cooling Cambridge | 64 | 4.9★ (2,155) | Cambridge, 17 km away | 24/7 | — |
The 287 best HVAC contractors in Kitchener, ranked
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.
Based in Kitchener
66/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 1,247 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 1,247 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1501 Victoria St N, Kitchener, ON N2B 3E4
Based in Kitchener
65/100CR ScoreRanked #3 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
Based in Kitchener
65/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 451 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 451 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 44 Otonabee Dr, Kitchener, ON N2C 1L6
Based in Kitchener
65/100CR ScoreRanked #5 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
Based in Cambridge, 18 km away
64/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.7★ from 9,230 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 9,230 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 275 Thompson Dr, Cambridge, ON N1T 2B9
Based in Kitchener
64/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 447 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 447 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1268 Victoria St N, Kitchener, ON N2B 3C9
Based in Kitchener
64/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 378 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 378 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 107 Manitou Dr #12, Kitchener, ON N2C 1L4
Based in Kitchener
64/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 233 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 233 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Cambridge, 17 km away
64/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 2,155 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 2,155 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 290 Pinebush Rd, Cambridge, ON N1T 1Z6
Based in Waterloo, 10 km away
63/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.7★ from 2,268 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 2,268 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 215 Bathurst Dr Units 4/5, Waterloo, ON N2V 2B2
Based in Kitchener
63/100CR ScoreRanked #12 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
Based in Cambridge, 11 km away
63/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.8★ from 1,534 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,534 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1090 Fountain St N Unit 4, Cambridge, ON N3E 1A3
Based in Waterloo, 9 km away
63/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 631 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 631 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 595 Colby Dr #2, Waterloo, ON N2V 1A1
Based in Waterloo, 9 km away
63/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 397 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 397 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 105 Randall Dr unit#1, Waterloo, ON N2V 1C5
#16 Unique Air
Based in Kitchener
63/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 187 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 187 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 533 Queen St S, Kitchener, ON N2G 1W9
Based in Waterloo, 10 km away
62/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.7★ from 969 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 969 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 75 Rankin St, Waterloo, ON N2V 2B5
Based in Brant, 13 km away
62/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 593 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 593 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3160 Alps Rd, Ayr, ON N0B 1E0
Based in Kitchener
62/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 132 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 132 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 675 Queen St S, Kitchener, ON N2M 1A1
Based in Kitchener
62/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 120 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 120 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 49 Medford St, Kitchener, ON N2N 2H9
Based in Kitchener
62/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 109 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 109 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 251 Arnold St Unit B, Kitchener, ON N2H 6E8
Based in Waterloo, 5 km away
62/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 525 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 525 Google reviews
- Hours
- Mon–Sun 7:30 AM–11:30 PM
- Address
- 403 Barrington Ln, Waterloo, ON N2T 1H9
Based in Cambridge, 11 km away
62/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.6★ from 1,022 Google reviews, listed on Google as “HVAC contractor”.
- 4.6★ from 1,022 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1090 Fountain St N Unit 4, Cambridge, ON N3E 1A3
Based in Huron East, 12 km away
61/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 268 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 268 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11 Henry St, St. Jacobs, ON N0B 2N0
Based in Kitchener
61/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.6★ from 155 Google reviews, listed on Google as “HVAC contractor”.
- 4.6★ from 155 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- #B, 334 Manitou Dr, Kitchener, ON N2C 1L3
HVAC contractors ranked #26 to #50
#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 287 ranked HVAC contractors here; the rest are on their profiles.
Also serving Kitchener
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 |
|---|---|---|
| Bradley Heating and Cooling | 3.0★ (2) | In Kitchener |
| Capital Plumbing & Heating | 1.0★ (1) | In Kitchener |
| Cosmopolitan Mechanical Services Kitchener | In Kitchener | |
| Culliton Inc. | 5.0★ (1) | In Kitchener |
| DAVIS MECHANICAL HEATING AND COOLING | 4.3★ (10) | In Kitchener |
| EcoHome Technologies | In Kitchener | |
| Facilities Management of Canada Inc. | 5.0★ (1) | In Kitchener |
| Four Seasons Heating & Cooling | 5.0★ (1) | In Kitchener |
| Guelph ClimateCare | 4.7★ (164) | 25 km |
| Macker Mechanical | 5.0★ (2) | 12 km |
| Mason Mechanical Services Inc | 5.0★ (2) | 11 km |
| Mclean Mechanical | In Kitchener | |
| NRG HVAC | 5.0★ (2) | 5 km |
| Smith and Long Limited | 5.0★ (1) | In Kitchener |
| Speedy Home Services | In Kitchener | |
| Stanton Mechanical Ltd | 4.6★ (14) | In Kitchener |
| Startek Building Solutions | 5.0★ (1) | In Kitchener |
| Tri City Plumbing Inc. | 4.9★ (280) | In Kitchener |
| Ventilation HVAC Kitchener | 5.0★ (2) | In Kitchener |
| WinterHeat Rescue HVAC | 5.0★ (2) | 8 km |
How much do HVAC contractors cost in Kitchener?
US national ranges converted to CAD, not adjusted for Kitchener. 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 |
When to hire an HVAC contractor in Ontario
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.
How we ranked Kitchener HVAC contractors
We scored 287 Kitchener 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 Kitchener 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 |
HVAC contractors in Kitchener: frequently asked questions
Who is the best HVAC contractor in Kitchener?
By CR Score, the highest-ranked HVAC contractor in Kitchener, ON is Aire One Heating & Cooling KW with a CR Score of 68/100. It has 4.8★ from 9,448 Google reviews. It is open 24/7. Able Air Conditioning & Heating (#2) and Total Aire Care Inc. (#3) follow. We ranked 287 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Kitchener?
ContractorsRanked ranks 287 HVAC contractors serving Kitchener, ON. 22 of them are based in Kitchener; the rest serve it from nearby towns. Another 20 within 40 km are listed but not ranked yet. Counts are as of October 2026.
Which HVAC contractors in Kitchener are open 24/7?
115 ranked HVAC contractors in Kitchener post 24/7 hours. The highest-ranked are Aire One Heating & Cooling KW (#1), Able Air Conditioning & Heating (#2) and Total Aire Care Inc. (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Kitchener work on weekends?
160 of 287 ranked HVAC contractors post Saturday hours and 137 post Sunday hours. The highest-ranked open Saturdays are Aire One Heating & Cooling KW (#1), Able Air Conditioning & Heating (#2) and Total Aire Care Inc. (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does ac replacement cost in Kitchener?
AC replacement typically costs CA$5,460 to CA$11,350, with CA$8,400 typical (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)). This is a national range, not adjusted for Kitchener. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Kitchener HVAC contractors have?
The median Google rating among 287 rated HVAC contractors in Kitchener is 4.9★, with a median of 29 reviews. Aire One Heating & Cooling KW has the most, 9,448 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.
When is the best time to hire an HVAC contractor in Kitchener?
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.
How does ContractorsRanked rank HVAC contractors?
Each HVAC contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Kitchener
- October 2026: CR Scores recalculated for 287 hvac contractors serving Kitchener.
More HVAC contractors and Kitchener pages
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