Top 50 of 162 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank
24 of the 50 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.
#1 for emergency heating and cooling in South Portland Gardens: Heritage Home Service, open 24/7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
| Rank | Business | CR Score | Google rating | Based in | Hours |
|---|---|---|---|---|---|
| 1 | Heritage Home Service | 95 | 4.8★ (630) | Portland, 1 mi away | 24/7 |
| 2 | Pine State Services | 94 | 4.7★ (1,112) | Buxton, 3 mi away | 24/7 |
| 3 | Aire Serv of Southern Maine | 92 | 4.9★ (755) | Buxton, 13 mi away | 24/7 |
| 4 | Gammon’s Heating & Cooling | 92 | 4.8★ (557) | Saco, 8 mi away | 24/7 |
| 5 | 207 Plumbing and Heating | 91 | 4.7★ (429) | Gorham, 11 mi away | 24/7 |
| 6 | LaPlante Electric | 88 | 4.9★ (1,260) | Buxton, 7 mi away | 24/7 |
| 7 | Southern Maine Mechanical | 88 | 5.0★ (33) | Gorham, 6 mi away | 24/7 |
| 8 | Aces Highlands HVAC/Plumbing | 87 | 5.0★ (18) | Portland, 4 mi away | 24/7 |
| 9 | Maine Air Comfort | 87 | 4.8★ (23) | Buxton, 4 mi away | 24/7 |
| 10 | Southern Maine Heat Pumps | 87 | 5.0★ (32) | Buxton, 9 mi away | 24/7 |
24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.
Open 24/7 · 4.8 from 630 Google reviews
Open 24/7 · 4.7 from 1,112 Google reviews
Open 24/7 · 4.9 from 755 Google reviews
Open 24/7 · 4.8 from 557 Google reviews
Open 24/7 · 4.7 from 429 Google reviews
Open 24/7 · 4.9 from 1,260 Google reviews
Open 24/7 · 5.0 from 33 Google reviews
#8Aces Highlands HVAC/Plumbing
Open 24/7 · 5.0 from 18 Google reviews
24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 162 is on the HVAC contractors page.
Ranked #1 because of its Google rating and availability: 4.8★ from 630 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Buxton, 3 mi away
Ranked #2 because of its Google rating and availability: 4.7★ from 1,112 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Buxton, 13 mi away
Ranked #3 because of its Google rating and availability: 4.9★ from 755 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Saco, 8 mi away
Ranked #4 because of its Google rating and availability: 4.8★ from 557 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gorham, 11 mi away
Ranked #5 because of its Google rating and availability: 4.7★ from 429 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Buxton, 7 mi away
Ranked #6 because of its Google rating and review volume: 4.9★ from 1,260 Google reviews, 1,260 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gorham, 6 mi away
Ranked #7 because of its Google rating and availability: 5.0★ from 33 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Portland, 4 mi away
Ranked #8 because of its Google rating and availability: 5.0★ from 18 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Buxton, 4 mi away
Ranked #9 because of its Google rating and availability: 4.8★ from 23 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Buxton, 9 mi away
Ranked #10 because of its Google rating and availability: 5.0★ from 32 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Buxton, 7 mi away
Ranked #11 because of its Google rating and availability: 5.0★ from 35 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Auburn, 9 mi away
Ranked #12 because of its Google rating and availability: 5.0★ from 21 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Portland, 3 mi away
Ranked #13 because of its Google rating and availability: 4.4★ from 15 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Biddeford, 2 mi away
Ranked #14 because of its Google rating and availability: 5.0★ from 8 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in South Portland, 1 mi away
Ranked #15 because of its Google rating and availability: 5.0★ from 7 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Biddeford, 3 mi away
Ranked #16 because of its Google rating and availability: 5.0★ from 9 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Westbrook, 2 mi away
Ranked #17 because of its Google rating and availability: 3.3★ from 7 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Old Orchard Beach, 10 mi away
Ranked #18 because of its Google rating and availability: 5.0★ from 178 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Westbrook, 5 mi away
Ranked #19 because of its Google rating and availability: 5.0★ from 8 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Westbrook, 3 mi away
Ranked #20 because of its Google rating and availability: 2.9★ from 8 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Gorham, 15 mi away
Ranked #21 because of its Google rating and availability: 4.2★ from 46 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Biddeford, 11 mi away
Ranked #22 because of its Google rating and availability: 3.7★ from 21 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Buxton, 9 mi away
Ranked #23 because of its Google rating and availability: 4.7★ from 43 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Auburn, 17 mi away
Ranked #24 because of its Google rating and availability: 5.0★ from 6 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Waterboro, 9 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “HVAC contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.
Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.
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 |
|---|---|---|
| Reputation | 25% | Bayesian-adjusted Google star rating |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 |
| Review volume | 10% | log10(reviews + 1) against the list maximum |
| Recency | 10% | Share of reviews from the last 12 months |
| Availability | 20% | Weekly open hours, Saturday, Sunday, 24/7 or same-day |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) |