167 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Portland: Heritage Home Service, CR Score 66/100; 4.8★ from 630 Google reviews; open 24/7.
Best for emergencies (open 24/7): Pine State Services, posts 24/7 hours; ranked #2 of 167.
Most-reviewed: Dog House Heating Air, and Plumbing, LLC, 1,388 Google reviews at 4.8★, the most of 167 ranked; ranked #26.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
167 Portland HVAC contractors are ranked here by CR Score, from ten published factors. 28 are open 24/7, 51 open Saturdays and 38 open Sundays, based on posted hours. The median Google rating is 4.8★ across 167 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Heritage Home Service | 66 | 4.8★ (630) | Portland | 24/7 | Overall |
| 2 | Pine State Services | 65 | 4.7★ (1,112) | Buxton, 6 mi away | 24/7 | Emergencies |
| 3 | Aire Serv of Southern Maine | 64 | 4.9★ (755) | Buxton, 12 mi away | 24/7 | — |
| 4 | Gammon’s Heating & Cooling | 63 | 4.8★ (557) | Saco, 11 mi away | 24/7 | — |
| 5 | 207 Plumbing and Heating | 62 | 4.7★ (429) | Gorham, 11 mi away | 24/7 | — |
| 6 | Dave's World Scarborough | 62 | 4.9★ (488) | Buxton, 5 mi away | Sat | — |
| 7 | Martel Mechanical | 61 | 5.0★ (35) | Buxton, 4 mi away | 24/7 | — |
| 8 | Aces Highlands HVAC/Plumbing | 60 | 5.0★ (18) | Portland | 24/7 | — |
| 9 | Gelinas HVAC Services | 60 | 4.9★ (508) | Buxton, 5 mi away | — | — |
| 10 | LaPlante Electric | 59 | 4.9★ (1,260) | Buxton, 10 mi away | 24/7 | — |
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.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 630 Google reviews, listed on Google as “HVAC contractor”.
Based in Buxton, 6 mi away
Ranked #2 because of its Google rating and trade focus: 4.7★ from 1,112 Google reviews, listed on Google as “HVAC contractor”.
Based in Buxton, 12 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 755 Google reviews, listed on Google as “HVAC contractor”.
Based in Saco, 11 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 557 Google reviews, listed on Google as “HVAC contractor”.
Based in Gorham, 11 mi away
Ranked #5 because of its Google rating and trade focus: 4.7★ from 429 Google reviews, listed on Google as “HVAC contractor”.
Based in Buxton, 5 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 488 Google reviews, listed on Google as “HVAC contractor”.
Based in Buxton, 4 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “HVAC contractor”.
Based in Portland
Ranked #8 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “HVAC contractor”.
Based in Buxton, 5 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 508 Google reviews, listed on Google as “Furnace repair service”.
Based in Buxton, 10 mi away
Ranked #10 because of its Google rating and review volume: 4.9★ from 1,260 Google reviews.
Based in Buxton, 5 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 23 Google reviews, listed on Google as “HVAC contractor”.
Based in Portland
Ranked #12 because of its Google rating and trade focus: 4.4★ from 15 Google reviews, listed on Google as “HVAC contractor”.
Based in Buxton, 11 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “HVAC contractor”.
Based in Biddeford, 2 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “HVAC contractor”.
Based in Gorham, 12 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 546 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn, 11 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “HVAC contractor”.
Based in Gorham, 9 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “HVAC contractor”.
Based in Biddeford, 6 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “HVAC contractor”.
Based in South Portland, 4 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “HVAC contractor”.
Based in Westbrook, 5 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Yarmouth, 14 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 406 Google reviews, listed on Google as “Heating contractor”.
Based in Topsham, 24 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 82 Google reviews, listed on Google as “HVAC contractor”.
Based in Portland
Ranked #23 because of its Google rating and trade focus: 4.5★ from 30 Google reviews, listed on Google as “Heating contractor”.
Based in Biddeford, 19 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 553 Google reviews, listed on Google as “HVAC contractor”.
Based in Portland
Ranked #25 because of its Google rating and trade focus: 4.6★ from 84 Google reviews, listed on Google as “Heating contractor”.
#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 167 ranked HVAC contractors here; the rest are on their profiles.
20 more HVAC contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Carlo Doria Plumbing & Heating | 5.0★ (1) | In Portland |
| CC Mechanical | 5.0★ (2) | In Portland |
| Coastal Plumbing & Heating | 5.0★ (4) | 7 mi |
| Connolly's Plumbing & Heating | 3.0★ (2) | 10 mi |
| Donnelly's HVAC | 4.3★ (6) | 17 mi |
| Farwell HVAC | In Portland | |
| Great Bay Industries | 5.0★ (2) | In Portland |
| Hay Runner | 4.0★ (26) | In Portland |
| Hughes Heating Services | 4.6★ (16) | 25 mi |
| John Scott Plumbing and Heating | 4.3★ (11) | 5 mi |
| Lamontagne Plumbing & Heating | 5.0★ (5) | 16 mi |
| Maine Controls | 5.0★ (1) | In Portland |
| Maine Heating & Air Conditioning | 5.0★ (1) | In Portland |
| Maine Island Energy | 5.0★ (2) | 6 mi |
| Northeast Technical Institute, HVAC Shop | 5.0★ (2) | 4 mi |
| Paul Mesmer Master Electrician | In Portland | |
| Snyder Plumbing & Heating | 5.0★ (2) | 1 mi |
| Sturgis Plumbing & Heating | 4.1★ (12) | 13 mi |
| Townsend Plumbing and Heating | 4.5★ (2) | 10 mi |
| W.T. Fenderson Heating & Air Conditioning | 5.0★ (4) | 17 mi |
National price ranges in USD, not adjusted for Portland. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| AC replacement | $3,887 | $5,978 | $8,073 | Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 2026 |
| Furnace replacement | $2,823 | $4,814 | $6,896 | Per system, installed; typical range of customer-reported jobs. US national range | October 2026 |
In Maine, 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 167 Portland 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 Portland 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 |