93/100CR Score
Ranked #1 because of its Google rating and availability: 4.8★ from 1,575 Google reviews, open 24/7.
- 4.8★ from 1,575 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1007 York Rd, Guelph, ON N1E 6Y9
Best HVAC Contractors in Guelph, ON (2026)
291 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Guelph: Oosterveld Heating & Air Conditioning, CR Score 93/100; 4.8★ from 1,575 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Aire One Heating & Cooling KW, posts 24/7 hours; ranked #2 of 291.
- 2
Most-reviewed: Aire One Heating & Cooling KW, 9,448 Google reviews at 4.8★, the most of 291 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
291 Guelph HVAC contractors are ranked here by CR Score, from 8 published factors. 131 are open 24/7, 194 open Saturdays and 166 open Sundays, based on posted hours. The median Google rating is 4.9★ across 291 rated businesses.
Top 10 HVAC contractors in Guelph at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Oosterveld Heating & Air Conditioning | 93 | 4.8★ (1,575) | Guelph | 24/7 | Overall |
| 2 | Aire One Heating & Cooling KW | 92 | 4.8★ (9,448) | Kitchener, 19 km away | 24/7 | Emergencies, Most reviews |
| 3 | Aido Climate Solutions Inc. | 92 | 4.9★ (529) | Guelph | 24/7 | — |
| 4 | Reliance Heating, Air Conditioning & Plumbing | 92 | 4.7★ (9,230) | Cambridge, 15 km away | 24/7 | — |
| 5 | Aire One Heating & Cooling Cambridge | 92 | 4.9★ (2,155) | Cambridge, 15 km away | 24/7 | — |
| 6 | Able Air Conditioning & Heating | 92 | 5.0★ (1,247) | Kitchener, 17 km away | 24/7 | — |
| 7 | Hy-Mark Home Comfort | 91 | 4.8★ (450) | Guelph | 24/7 | — |
| 8 | Local Own Comfort | 90 | 5.0★ (113) | Guelph | 24/7 | — |
| 9 | Total Aire Care Inc. | 90 | 5.0★ (857) | Kitchener, 22 km away | 24/7 | — |
| 10 | Boehmers/Cronin Emery Home Services by Enercare | 90 | 4.8★ (1,534) | Cambridge, 17 km away | 24/7 | — |
The 291 best HVAC contractors in Guelph, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Kitchener, 19 km away
92/100CR ScoreRanked #2 because of its Google rating and review volume: 4.8★ from 9,448 Google reviews, the most Google reviews on this list (9,448).
- 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
Based in Guelph
92/100CR ScoreRanked #3 because of its Google rating and availability: 4.9★ from 529 Google reviews, open 24/7.
- 4.9★ from 529 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 50 Victoria Rd S, Guelph, ON N1E 5P6
Based in Cambridge, 15 km away
92/100CR ScoreRanked #4 because of its Google rating and availability: 4.7★ from 9,230 Google reviews, open 24/7.
- 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 Cambridge, 15 km away
92/100CR ScoreRanked #5 because of its Google rating and availability: 4.9★ from 2,155 Google reviews, open 24/7.
- 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 Kitchener, 17 km away
92/100CR ScoreRanked #6 because of its Google rating and availability: 5.0★ from 1,247 Google reviews, open 24/7.
- 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 Guelph
91/100CR ScoreRanked #7 because of its Google rating and availability: 4.8★ from 450 Google reviews, open 24/7.
- 4.8★ from 450 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 500 Maltby Rd E, Puslinch, ON N0B 2J0
Based in Guelph
90/100CR ScoreRanked #8 because of its Google rating and availability: 5.0★ from 113 Google reviews, open 24/7.
- 5.0★ from 113 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3 Watson Rd S Unit 4, Guelph, ON N1E 6Y9
Based in Kitchener, 22 km away
90/100CR ScoreRanked #9 because of its Google rating and availability: 5.0★ from 857 Google reviews, open 24/7.
- 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 Cambridge, 17 km away
90/100CR ScoreRanked #10 because of its Google rating and availability: 4.8★ from 1,534 Google reviews, open 24/7.
- 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 Kitchener, 14 km away
89/100CR ScoreRanked #11 because of its Google rating and availability: 5.0★ from 233 Google reviews, open 24/7.
- 5.0★ from 233 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Guelph
89/100CR ScoreRanked #12 because of its Google rating and availability: 4.9★ from 87 Google reviews, open 24/7.
- 4.9★ from 87 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 82 Youngman Dr, Guelph, ON N1G 4K6
Based in Kitchener, 22 km away
89/100CR ScoreRanked #13 because of its Google rating and availability: 5.0★ from 451 Google reviews, open 24/7.
- 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, 18 km away
89/100CR ScoreRanked #14 because of its Google rating and availability: 4.9★ from 447 Google reviews, open 24/7.
- 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 Guelph
89/100CR ScoreRanked #15 because of its Google rating and availability: 4.7★ from 164 Google reviews, open 24/7.
- 4.7★ from 164 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3, 5551 Hwy 6 N, Guelph, ON N1H 6J2
Based in Kitchener, 22 km away
89/100CR ScoreRanked #16 because of its Google rating and availability: 4.9★ from 674 Google reviews, open 24/7.
- 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 Waterloo, 22 km away
89/100CR ScoreRanked #17 because of its Google rating and availability: 4.7★ from 2,268 Google reviews, open 24/7.
- 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 Guelph
89/100CR ScoreRanked #18 because of its Google rating and availability: 5.0★ from 53 Google reviews, open 24/7.
- 5.0★ from 53 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 41 Lewis Rd, Guelph, ON N1H 1E9
Based in Waterloo, 23 km away
89/100CR ScoreRanked #19 because of its Google rating and availability: 4.9★ from 631 Google reviews, open 24/7.
- 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, 24 km away
89/100CR ScoreRanked #20 because of its Google rating and availability: 5.0★ from 397 Google reviews, open 24/7.
- 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
Based in Guelph
88/100CR ScoreRanked #21 because of its Google rating and availability: 4.8★ from 67 Google reviews, open 24/7.
- 4.8★ from 67 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7803 Wellington 22, Guelph, ON N1H 6J2
Based in Guelph
88/100CR ScoreRanked #22 because of its Google rating and availability: 4.9★ from 47 Google reviews, open 24/7.
- 4.9★ from 47 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 58 Hands Dr, Guelph, ON N1G 3H3
Based in Guelph
88/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 213 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 213 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun 9 AM–5 PM
- Address
- Churchill Rd N, Acton, ON L7J 2H8
Based in Kitchener, 22 km away
88/100CR ScoreRanked #24 because of its Google rating and availability: 4.9★ from 378 Google reviews, open 24/7.
- 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 Guelph
88/100CR ScoreRanked #25 because of its Google rating and availability: 4.8★ from 53 Google reviews, open 24/7.
- 4.8★ from 53 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 55 Cork St E unit 106, Guelph, ON N1H 2W8
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 291 ranked HVAC contractors here; the rest are on their profiles.
Also serving Guelph
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 |
|---|---|---|
| Air Expert Home Comfort Inc | 4.6★ (155) | 22 km |
| Air Pro Services | 4.8★ (29) | 17 km |
| AirCon Inc. | 4.7★ (27) | 14 km |
| Aire One Heating & Cooling Guelph | In Guelph | |
| Ariss Duct Mechanical | 5.0★ (2) | In Guelph |
| B.A.P Heating & Cooling Services Ltd | In Guelph | |
| Complete Combustion Gas | 5.0★ (1) | In Guelph |
| Eco Building Group Inc. | 1.0★ (1) | In Guelph |
| Evolve Builders Group Inc. | 4.4★ (17) | In Guelph |
| Fusion Homes | 4.4★ (315) | In Guelph |
| Jag-Wire Electric Inc. | 4.0★ (4) | In Guelph |
| Jess-Don Dunford Ltd | 5.0★ (2) | In Guelph |
| Joe's Plumbing & Heating | In Guelph | |
| McKenna Wayne Plumbing & Heating | In Guelph | |
| Mr HVAC Services | 5.0★ (2) | In Guelph |
| Precision Air Solutions Inc. | 5.0★ (1) | In Guelph |
| RGM Mechanical | 1.0★ (1) | In Guelph |
| Rite Way Mechanical Ltd | 4.4★ (7) | In Guelph |
| Star Mechanical Ltd | 5.0★ (8) | In Guelph |
| WSA HVACR Inc | 4.0★ (1) | In Guelph |
How much do HVAC contractors cost in Guelph?
US national ranges converted to CAD, not adjusted for Guelph. 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 Guelph HVAC contractors
We scored 291 Guelph HVAC contractors on 8 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. Unknown factors are left out of the score, 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 Guelph data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |
HVAC contractors in Guelph: frequently asked questions
Who is the best HVAC contractor in Guelph?
By CR Score, the highest-ranked HVAC contractor in Guelph, ON is Oosterveld Heating & Air Conditioning with a CR Score of 93/100. It has 4.8★ from 1,575 Google reviews. It is open 24/7. Aire One Heating & Cooling KW (#2) and Aido Climate Solutions Inc. (#3) follow. We ranked 291 HVAC contractors on 8 factors, last updated October 22, 2026.
How many HVAC contractors are there in Guelph?
ContractorsRanked ranks 291 HVAC contractors serving Guelph, ON. 15 of them are based in Guelph; 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 Guelph are open 24/7?
131 ranked HVAC contractors in Guelph post 24/7 hours. The highest-ranked are Oosterveld Heating & Air Conditioning (#1), Aire One Heating & Cooling KW (#2) and Aido Climate Solutions Inc. (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Guelph work on weekends?
194 of 291 ranked HVAC contractors post Saturday hours and 166 post Sunday hours. The highest-ranked open Saturdays are Oosterveld Heating & Air Conditioning (#1), Aire One Heating & Cooling KW (#2) and Aido Climate Solutions Inc. (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does ac replacement cost in Guelph?
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 Guelph. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Guelph HVAC contractors have?
The median Google rating among 291 rated HVAC contractors in Guelph is 4.9★, with a median of 32 reviews. Aire One Heating & Cooling KW has the most, 9,448 reviews, and ranks #2. 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 Guelph?
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 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Guelph
- October 2026: CR Scores recalculated for 291 hvac contractors serving Guelph.
- October 2026: 1 duplicate listing merged.
More HVAC contractors and Guelph pages
HVAC contractors near Guelph
- HVAC contractors in Cambridge, ON374 ranked
- HVAC contractors in Waterloo, ON249 ranked
- HVAC contractors in Kitchener, ON287 ranked
- HVAC contractors in Milton, ON651 ranked
- HVAC contractors in Burlington, ON574 ranked
- HVAC contractors in Paris, ON311 ranked
- HVAC contractors in New Hamburg, ON227 ranked
- HVAC contractors in Brampton, ON825 ranked
- HVAC contractors in Ancaster, ON370 ranked
- HVAC contractors in Orangeville, ON142 ranked
Other trades in Guelph
- Roofers in Guelph619 ranked
- Plumbers in Guelph263 ranked
- Electricians in Guelph240 ranked
- General contractors in Guelph347 ranked
- Painters in Guelph122 ranked
- Landscapers in Guelph148 ranked
- Handymen in Guelph46 ranked
- Kitchen remodelers in Guelph314 ranked
- Bathroom remodelers in Guelph243 ranked
- Flooring contractors in Guelph158 ranked
- Tile installers in Guelph46 ranked
- Drywall contractors in Guelph16 ranked
- Concrete contractors in Guelph173 ranked
- Fence contractors in Guelph131 ranked
- Deck builders in Guelph140 ranked
- Siding contractors in Guelph227 ranked
- Window installers in Guelph350 ranked
- Gutter installers in Guelph70 ranked
- Insulation contractors in Guelph39 ranked
- Solar installers in Guelph62 ranked
- Garage door repair companies in Guelph55 ranked
- Foundation repair companies in Guelph264 ranked
- Tree services in Guelph99 ranked
- Masonry contractors in Guelph82 ranked
- Water damage restoration companies in Guelph360 ranked
- Home builders in Guelph594 ranked
- Demolition contractors in Guelph41 ranked
- All contractors in Guelph