1,238 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Somerville: 128 Plumbing, Heating, Cooling & Electric, CR Score 66/100; 4.9★ from 3,912 Google reviews; open 24/7.
Best for emergencies (open 24/7): Winters Home Services, posts 24/7 hours; ranked #2 of 1,238.
Most-reviewed: Sila Heating, Air Conditioning, Plumbing & Electrical, 4,377 Google reviews at 4.9★, the most of 1,238 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,238 Somerville HVAC contractors are ranked here by CR Score, from ten published factors. 384 are open 24/7, 704 open Saturdays and 526 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,238 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | 128 Plumbing, Heating, Cooling & Electric | 66 | 4.9★ (3,912) | Wakefield, 8 mi away | 24/7 | Overall |
| 2 | Winters Home Services | 66 | 4.8★ (2,862) | Watertown, 4 mi away | 24/7 | Emergencies |
| 3 | Central Cooling & Heating | 65 | 4.9★ (3,169) | Woburn, 9 mi away | 24/7 | — |
| 4 | Sila Heating, Air Conditioning, Plumbing & Electrical | 65 | 4.9★ (4,377) | Stoneham, 6 mi away | Sat · Sun · Evenings | Most reviews |
| 5 | Akian Plumbing, Heating, Cooling & Electric | 65 | 4.8★ (1,625) | Watertown, 6 mi away | 24/7 | — |
| 6 | Green Tech Plumbing & Heating | 64 | 4.8★ (451) | Somerville | 24/7 | — |
| 7 | Trust 1 Services Plumbing, Heating, and Air Conditioning | 64 | 4.8★ (1,567) | Quincy, 8 mi away | 24/7 | — |
| 8 | Cranney Home Services | 63 | 4.8★ (4,220) | Danvers, 16 mi away | 24/7 | — |
| 9 | Heritage Home Service | 63 | 4.8★ (3,352) | Wilmington, 15 mi away | 24/7 | — |
| 10 | Addario's Plumbing, Heating, Cooling & Electrical Services | 63 | 4.6★ (2,076) | Wilmington, 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: 4.9★ from 3,912 Google reviews, listed on Google as “HVAC contractor”.
Based in Watertown, 4 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 2,862 Google reviews, listed on Google as “HVAC contractor”.
Based in Woburn, 9 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 3,169 Google reviews, listed on Google as “HVAC contractor”.
Based in Stoneham, 6 mi away
Ranked #4 because of its Google rating and review volume: 4.9★ from 4,377 Google reviews, the most in Somerville.
Based in Watertown, 6 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 1,625 Google reviews, listed on Google as “HVAC contractor”.
Based in Somerville
Ranked #6 because of its Google rating and trade focus: 4.8★ from 451 Google reviews, listed on Google as “HVAC contractor”.
Based in Quincy, 8 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 1,567 Google reviews, listed on Google as “HVAC contractor”.
Based in Danvers, 16 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 4,220 Google reviews, listed on Google as “HVAC contractor”.
Based in Wilmington, 15 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 3,352 Google reviews, listed on Google as “HVAC contractor”.
Based in Wilmington, 10 mi away
Ranked #10 because of its Google rating and trade focus: 4.6★ from 2,076 Google reviews, listed on Google as “HVAC contractor”.
Based in Brookline, 4 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 353 Google reviews, listed on Google as “HVAC contractor”.
Based in Boston, 3 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 206 Google reviews, listed on Google as “HVAC contractor”.
Based in Newton, 8 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 389 Google reviews, listed on Google as “Heating contractor”.
Based in Reading, 9 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 741 Google reviews, listed on Google as “HVAC contractor”.
Based in Woburn, 9 mi away
Ranked #15 because of its Google rating and trade focus: 4.7★ from 872 Google reviews, listed on Google as “HVAC contractor”.
Based in Acton, 23 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 3,978 Google reviews, listed on Google as “HVAC contractor”.
Based in Peabody, 13 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 839 Google reviews, listed on Google as “HVAC contractor”.
Based in Weymouth, 16 mi away
Ranked #18 because of its Google rating and trade focus: 4.7★ from 2,808 Google reviews, listed on Google as “HVAC contractor”.
Based in Needham, 9 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 259 Google reviews, listed on Google as “HVAC contractor”.
Based in Holliston, 20 mi away
Ranked #20 because of its Google rating and trade focus: 4.8★ from 2,950 Google reviews, listed on Google as “HVAC contractor”.
Based in Braintree, 14 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 1,026 Google reviews, listed on Google as “Furnace repair service”.
Based in Cambridge, 1 mi away
Ranked #22 because of its Google rating and trade focus: 4.5★ from 331 Google reviews, listed on Google as “HVAC contractor”.
Based in Abington, 7 mi away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 483 Google reviews, listed on Google as “HVAC contractor”.
Based in Danvers, 15 mi away
Ranked #24 because of its Google rating and trade focus: 4.7★ from 1,672 Google reviews, listed on Google as “HVAC contractor”.
Based in Brookline, 7 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 300 Google reviews, listed on Google as “HVAC contractor”.
#1 to #25 are shown in full above. Here are #26 to #34, in CR Score order; each links to its profile. We publish the top 34 of 1,238 ranked HVAC contractors here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | MillTown Plumbing, Heating, Cooling and Electrical | 62 | 4.8★ (2,927) | 21 mi |
| 30 | ARS / Rescue Rooter | 61 | 4.6★ (2,547) | 17 mi |
| 34 | J. Griffin Heating & Plumbing Inc | 61 | 5.0★ (643) | 13 mi |
National price ranges in USD, not adjusted for Somerville. 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 Massachusetts, 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 1,238 Somerville 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 Somerville 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 |