29 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Lambton Shores: AJM Heating Air Conditioning & Gas Services Inc., CR Score 63/100; 4.8★ from 36 Google reviews; open 24/7.
Best for emergencies (open 24/7): Bright's Grove Heating & Cooling (AC and Furnace Repair), posts 24/7 hours; ranked #2 of 29.
Most-reviewed: Jayden's Mechanical, 253 Google reviews at 4.8★, the most of 29 ranked; ranked #11.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
29 Lambton Shores HVAC contractors are ranked here by CR Score, from ten published factors. 9 are open 24/7, 14 open Saturdays and 13 open Sundays, based on posted hours. The median Google rating is 4.9★ across 29 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | AJM Heating Air Conditioning & Gas Services Inc. | 63 | 4.8★ (36) | Lambton Shores | 24/7 | Overall |
| 2 | Bright's Grove Heating & Cooling (AC and Furnace Repair) | 63 | 5.0★ (166) | Sarnia, 30 km away | 24/7 | Emergencies |
| 3 | Budget Heating & Cooling | 61 | 4.9★ (14) | Lambton Shores | 24/7 | — |
| 4 | MDR Hvac , London Heating and Air Conditioning Services | 60 | 5.0★ (7) | Lambton Shores | 24/7 | — |
| 5 | Devet's Delta Cooling | 59 | 4.2★ (6) | Lambton Shores | 24/7 | — |
| 6 | Protect HVAC | 58 | 4.9★ (8) | Lambton Shores | Sat · Sun · Evenings | — |
| 7 | ASM - All Systems Mechanical | 57 | 4.8★ (37) | Petrolia, 36 km away | 24/7 | — |
| 8 | London Home Climate | 57 | 5.0★ (16) | London, 31 km away | 24/7 | — |
| 9 | Mid-Lam Heating And Cooling | 57 | 4.8★ (21) | Lambton Shores | — | — |
| 10 | A Village Fireplace Shop | 57 | 4.4★ (160) | Sarnia, 28 km away | Sat | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 in Lambton Shores
Based in Lambton Shores
Ranked #1 because of its Google rating and trade focus: 4.8★ from 36 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 30 km away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 166 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lambton Shores
Ranked #3 because of its Google rating and trade focus: 4.9★ from 14 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lambton Shores
Ranked #4 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lambton Shores
Ranked #5 because of its Google rating and trade focus: 4.2★ from 6 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lambton Shores
Ranked #6 because of its Google rating and trade focus: 4.9★ from 8 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Petrolia, 36 km away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 37 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London, 31 km away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lambton Shores
Ranked #9 because of its Google rating and trade focus: 4.8★ from 21 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 28 km away
Ranked #10 because of its Google rating and trade focus: 4.4★ from 160 Google reviews, listed on Google as “Furnace repair service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bluewater, 39 km away
Ranked #11 because of its Google rating and review volume: 4.8★ from 253 Google reviews, the most in Lambton Shores.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lambton Shores
Ranked #12 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Huron East, 7 km away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Huron East, 33 km away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 12 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lambton Shores
Ranked #15 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Construction company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bluewater, 40 km away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 70 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Petrolia, 37 km away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bluewater, 21 km away
Ranked #18 because of its Google rating and trade focus: 4.5★ from 25 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Camlachie, 24 km away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “HVAC contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Lambton Shores
Ranked #20 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Kitchen remodeler”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Huron East, 25 km away
Ranked #21 because of its Google rating and trade focus: 4.6★ from 19 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Huron East, 20 km away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “General contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bluewater, 24 km away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Huron East, 33 km away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 38 km away
Ranked #25 because of its Google rating and trade focus: 4.2★ from 47 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #29, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Marks Comfort Tech | 50 | 4.6★ (20) | 39 km |
| 27 | King Plumbing & Heating | 49 | 4.9★ (8) | 26 km |
| 28 | Ace Appliance Heating & Cooling Inc | 47 | 4.2★ (5) | 38 km |
| 29 | Bluewater Plumbing & Heating | 47 | 5.0★ (12) | 34 km |
11 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 |
|---|---|---|
| Bob Magee Plumbing | 4.6★ (44) | In Lambton Shores |
| Comfort Painting | In Lambton Shores | |
| Comfort Painting | In Lambton Shores | |
| Custom Electric & Heating Inc. | 38 km | |
| Delta Cooling | In Lambton Shores | |
| Jon Vaughan Heating and Cooling | In Lambton Shores | |
| Larmer Plumbing & Heating Ltd | 4.0★ (1) | In Lambton Shores |
| Pro Desk at RONA | In Lambton Shores | |
| Pro Desk at RONA+ | 5.0★ (1) | 39 km |
| Responsive Multi-Tech Services | 33 km | |
| Thomson Mechanical Services Inc. | 38 km |
US national ranges converted to CAD, not adjusted for Lambton Shores. 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 29 Lambton Shores 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 Lambton Shores 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 |