90/100CR Score
Ranked #1 because of its Google rating and availability: 5.0★ from 499 Google reviews, open 24/7.
- 5.0★ from 499 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 107 Gaylord Rd, St Thomas, ON N5P 3S3
Best HVAC Contractors in Aylmer, ON (2026)
134 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Aylmer: Abode Home Comfort, CR Score 90/100; 5.0★ from 499 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Reliance London Heating, Air Conditioning & Plumbing, posts 24/7 hours; ranked #2 of 134.
- 2
Most-reviewed: Reliance London Heating, Air Conditioning & Plumbing, 12,217 Google reviews at 4.8★, the most of 134 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
134 Aylmer HVAC contractors are ranked here by CR Score, from 8 published factors. 57 are open 24/7, 74 open Saturdays and 62 open Sundays, based on posted hours. The median Google rating is 4.8★ across 134 rated businesses.
Most of this list also appears on the HVAC contractors in St. Thomas ranking. See HVAC contractors in St. Thomas
Top 10 HVAC contractors in Aylmer at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Abode Home Comfort | 90 | 5.0★ (499) | St. Thomas, 14 km away | 24/7 | Overall |
| 2 | Reliance London Heating, Air Conditioning & Plumbing | 90 | 4.8★ (12,217) | London, 33 km away | 24/7 | Emergencies, Most reviews |
| 3 | Gastech Solutions Inc. | 89 | 4.9★ (491) | St. Thomas, 14 km away | 24/7 | — |
| 4 | Handy Bros. HVAC St. Thomas (AC and Furnace Repair) | 88 | 4.9★ (313) | St. Thomas, 17 km away | 24/7 | — |
| 5 | AirWise Heating & Cooling | 88 | 5.0★ (29) | Aylmer | 24/7 | — |
| 6 | Handy Bros. HVAC London (AC and Furnace Repair) | 88 | 4.9★ (536) | London, 26 km away | 24/7 | — |
| 7 | Roy Inch & Sons Home Services by Enercare | 87 | 4.7★ (1,490) | London, 28 km away | 24/7 | — |
| 8 | B.R.'s Plumbing and Heating | 86 | 4.8★ (236) | Norfolk County, 23 km away | 24/7 | — |
| 9 | Hawana HVAC Solutions Same Day Furnace & Installation | 86 | 5.0★ (130) | London, 26 km away | 24/7 | — |
| 10 | KALJIC Mechanical | 86 | 5.0★ (55) | St. Thomas, 17 km away | 24/7 | — |
The 134 best HVAC contractors in Aylmer, 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 London, 33 km away
90/100CR ScoreRanked #2 because of its Google rating and review volume: 4.8★ from 12,217 Google reviews, the most Google reviews on this list (12,217).
- 4.8★ from 12,217 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 16025 Robins Hill Rd, London, ON N5V 0C4
Based in St. Thomas, 14 km away
89/100CR ScoreRanked #3 because of its Google rating and availability: 4.9★ from 491 Google reviews, open 24/7.
- 4.9★ from 491 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 45 Progress Dr, St Thomas, ON N5P 4G4
Based in St. Thomas, 17 km away
88/100CR ScoreRanked #4 because of its Google rating and availability: 4.9★ from 313 Google reviews, open 24/7.
- 4.9★ from 313 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 656 Talbot St Upper Level, St Thomas, ON N5P 1C8
Based in Aylmer
88/100CR ScoreRanked #5 because of its Google rating and availability: 5.0★ from 29 Google reviews, open 24/7.
- 5.0★ from 29 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- Forest St, Aylmer, ON N5H 1A5
Based in London, 26 km away
88/100CR ScoreRanked #6 because of its Google rating and availability: 4.9★ from 536 Google reviews, open 24/7.
- 4.9★ from 536 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 213 Consortium Ct, London, ON N6E 2S8
Based in London, 28 km away
87/100CR ScoreRanked #7 because of its Google rating and availability: 4.7★ from 1,490 Google reviews, open 24/7.
- 4.7★ from 1,490 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3500 White Oak Rd Unit B-1, London, ON N6E 2Z9
Based in Norfolk County, 23 km away
86/100CR ScoreRanked #8 because of its Google rating and availability: 4.8★ from 236 Google reviews, open 24/7.
- 4.8★ from 236 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1 Vance Dr #1, Tillsonburg, ON N4G 4M4
Based in London, 26 km away
86/100CR ScoreRanked #9 because of its Google rating and availability: 5.0★ from 130 Google reviews, open 24/7.
- 5.0★ from 130 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 670 Millbank Dr, London, ON N6E 1S2
Based in St. Thomas, 17 km away
86/100CR ScoreRanked #10 because of its Google rating and availability: 5.0★ from 55 Google reviews, open 24/7.
- 5.0★ from 55 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in London, 30 km away
86/100CR ScoreRanked #11 because of its Google rating and availability: 4.6★ from 1,614 Google reviews, open 24/7.
- 4.6★ from 1,614 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 28 Adelaide St S, London, ON N5Z 3K2
Based in London, 31 km away
85/100CR ScoreRanked #12 because of its Google rating and availability: 4.8★ from 271 Google reviews, open 24/7.
- 4.8★ from 271 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 443 South St, London, ON N6B 1C1
Based in Huron East, 32 km away
85/100CR ScoreRanked #13 because of its Google rating and availability: 5.0★ from 110 Google reviews, open 24/7.
- 5.0★ from 110 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in St. Thomas, 14 km away
85/100CR ScoreRanked #14 because of its Google rating and availability: 4.9★ from 23 Google reviews, open 24/7.
- 4.9★ from 23 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 258 Edward St, St Thomas, ON N5P 1Z5
Based in London, 25 km away
84/100CR ScoreRanked #15 because of its Google rating and availability: 4.9★ from 62 Google reviews, open 24/7.
- 4.9★ from 62 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 39 Enterprise Dr, London, ON N6N 1A3
Based in Norfolk County, 23 km away
84/100CR ScoreRanked #16 because of its Google rating and availability: 4.9★ from 34 Google reviews, open 24/7.
- 4.9★ from 34 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1 Vance Dr, Tillsonburg, ON N4G 4M4
Based in Norfolk County, 23 km away
84/100CR ScoreRanked #17 because of its Google rating and availability: 4.9★ from 34 Google reviews, open 24/7.
- 4.9★ from 34 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 21 Brock St E, Tillsonburg, ON N4G 1Z4
Based in Ingersoll, 31 km away
84/100CR 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
- 16 Pine St, Ingersoll, ON N5C 1A4
Based in London, 26 km away
83/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 2,733 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 2,733 Google reviews
- Hours
- Mon–Sat 8 AM–11 PM · Sun closed
- Address
- 77 Bessemer Rd, London, ON N6E 1P9
Based in London, 31 km away
83/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 493 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 493 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 10 Pacific Ct Unit 2, London, ON N5V 3K4
Based in London, 32 km away
83/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.8★ from 860 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 860 Google reviews
- Hours
- Mon–Fri 7:30 AM–9 PM · Sat 9 AM–6 PM · Sun 10 AM–5 PM
- Address
- 461 Second St, London, ON N5V 2B1
Based in London, 32 km away
83/100CR ScoreRanked #22 because of its Google rating and availability: 4.6★ from 250 Google reviews, open 24/7.
- 4.6★ from 250 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 353 Clarence St Unit 11, London, ON N6A 3M4
Based in Aylmer
83/100CR ScoreRanked #23 because of its Google rating and availability: 4.1★ from 9 Google reviews, open 24/7.
- 4.1★ from 9 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 49860 Dingle St, Aylmer, ON N5H 2R1
Based in London, 36 km away
83/100CR ScoreRanked #24 because of its Google rating and availability: 4.9★ from 71 Google reviews, open 24/7.
- 4.9★ from 71 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1291 Rideau Gate, London, ON N5X 1W8
Based in London, 30 km away
83/100CR ScoreRanked #25 because of its Google rating and availability: 5.0★ from 28 Google reviews, open 24/7.
- 5.0★ from 28 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
HVAC contractors ranked #27 to #32
#1 to #25 are shown in full above. Here are #27 to #32, in CR Score order; each links to its profile. We publish the top 32 of 134 ranked HVAC contractors here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 27 | Constant Home Comfort London | 82 | 4.6★ (73) | 28 km |
| 32 | Aire One | 82 | 4.4★ (177) | 28 km |
Also serving Aylmer
1 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 |
|---|---|---|
| Orzech Heating and Cooling | 4.8★ (272) | 26 km |
How much do HVAC contractors cost in Aylmer?
US national ranges converted to CAD, not adjusted for Aylmer. 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 Aylmer HVAC contractors
We scored 134 Aylmer 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 Aylmer 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 Aylmer: frequently asked questions
Who is the best HVAC contractor in Aylmer?
By CR Score, the highest-ranked HVAC contractor in Aylmer, ON is Abode Home Comfort with a CR Score of 90/100. It has 5.0★ from 499 Google reviews. It is open 24/7. Reliance London Heating, Air Conditioning & Plumbing (#2) and Gastech Solutions Inc. (#3) follow. We ranked 134 HVAC contractors on 8 factors, last updated October 22, 2026.
How many HVAC contractors are there in Aylmer?
ContractorsRanked ranks 134 HVAC contractors serving Aylmer, ON. 2 of them are based in Aylmer; the rest serve it from nearby towns. Another 1 within 40 km are listed but not ranked yet. Counts are as of October 2026.
Which HVAC contractors in Aylmer are open 24/7?
57 ranked HVAC contractors in Aylmer post 24/7 hours. The highest-ranked are Abode Home Comfort (#1), Reliance London Heating, Air Conditioning & Plumbing (#2) and Gastech Solutions Inc. (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Aylmer work on weekends?
74 of 134 ranked HVAC contractors post Saturday hours and 62 post Sunday hours. The highest-ranked open Saturdays are Abode Home Comfort (#1), Reliance London Heating, Air Conditioning & Plumbing (#2) and Gastech Solutions Inc. (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does ac replacement cost in Aylmer?
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 Aylmer. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Aylmer HVAC contractors have?
The median Google rating among 134 rated HVAC contractors in Aylmer is 4.8★, with a median of 29 reviews. Reliance London Heating, Air Conditioning & Plumbing has the most, 12,217 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 Aylmer?
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 Aylmer
- October 2026: CR Scores recalculated for 134 hvac contractors serving Aylmer.
More HVAC contractors and Aylmer pages
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