24 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Belfast: Keep It Clean Heat Pumps, CR Score 62/100; 5.0★ from 138 Google reviews; open Saturdays until 3 PM.
Best for emergencies (open 24/7): Stonewall Plumbing and Heating, LLC, posts 24/7 hours; ranked #20 of 24.
Most-reviewed: Hancock Chimney and Home Services, 712 Google reviews at 4.9★, the most of 24 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
24 Belfast HVAC contractors are ranked here by CR Score, from ten published factors. 1 is open 24/7, 5 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 4.5★ across 24 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Keep It Clean Heat Pumps | 62 | 5.0★ (138) | Belfast | Sat | Overall |
| 2 | We Clean Heat Pumps Mid Coast Maine | 59 | 4.9★ (107) | Belfast | — | — |
| 3 | Moonlight Fuel Inc | 58 | 4.9★ (21) | Belfast | — | — |
| 4 | Hometown Heat Pumps, Inc. | 55 | 4.8★ (294) | Winslow, 23 mi away | — | — |
| 5 | Jim's Burner Services | 55 | 4.3★ (23) | Belfast | — | — |
| 6 | Maritime Energy | 55 | 3.9★ (53) | Belfast | — | — |
| 7 | Hancock Chimney and Home Services | 53 | 4.9★ (712) | Ellsworth, 21 mi away | Sat | Most reviews |
| 8 | Logix, LLC | 53 | 4.9★ (114) | Belfast | — | — |
| 9 | Pope's Plumbing & Heating | 52 | 5.0★ (7) | Belfast | — | — |
| 10 | Robert L. Gray Co., Inc. Plumbing & Heating | 51 | 4.8★ (14) | Belfast | — | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 138 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Belfast
Ranked #2 because of its Google rating and trade focus: 4.9★ from 107 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Belfast
Ranked #3 because of its Google rating and trade focus: 4.9★ from 21 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Winslow, 23 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 294 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Belfast
Ranked #5 because of its Google rating and trade focus: 4.3★ from 23 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Belfast
Ranked #6 because of its Google rating and trade focus: 3.9★ from 53 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ellsworth, 21 mi away
Ranked #7 because of its Google rating and review volume: 4.9★ from 712 Google reviews, the most in Belfast.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Belfast
Ranked #8 because of its Google rating and review volume: 4.9★ from 114 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Belfast
Ranked #9 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Belfast
Ranked #10 because of its Google rating and trade focus: 4.8★ from 14 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockland, 24 mi away
Ranked #11 because of its Google rating and trade focus: 4.7★ from 12 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockland, 23 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Belfast
Ranked #13 because of its Google rating and review volume: 4.4★ from 67 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ellsworth, 18 mi away
Ranked #14 because of its Google rating and trade focus: 4.2★ from 10 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockland, 23 mi away
Ranked #15 because of its Google rating and trade focus: 4.2★ from 27 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Belfast
Ranked #16 because of its Google rating and trade focus: 3.8★ from 5 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockland, 22 mi away
Ranked #17 because of its Google rating and trade focus: 4.0★ from 3 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Rockland, 23 mi away
Ranked #18 because of its Google rating and trade focus: 4.2★ from 12 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bangor, 23 mi away
Ranked #19 because of its Google rating and trade focus: 4.3★ from 22 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bangor, 24 mi away
Ranked #20 because of its Google rating and trade focus: 2.3★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockland, 23 mi away
Ranked #21 because of its Google rating and trade focus: 4.2★ from 13 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Rockland, 22 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Winslow, 24 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Rockland, 23 mi away
Ranked #24 because of its Google rating and trade focus: 2.3★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
6 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 |
|---|---|---|
| EHR LLC | 5.0★ (1) | 24 mi |
| Hanna's Plumbing Heating | 1.0★ (2) | 24 mi |
| MaxPro Heat Pumps | 5.0★ (1) | 10 mi |
| Merry's Refrigeration & AC | In Belfast | |
| Mid Coast Maine Spray Foam Insulation | 24 mi | |
| The Pure Experts | 5.0★ (1) | 22 mi |
National price ranges in USD, not adjusted for Belfast. 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 24 Belfast 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 Belfast 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 |