396 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Charlton: Heritage Home Service, CR Score 65/100; 4.9★ from 2,563 Google reviews; open 24/7.
Best for emergencies (open 24/7): Landry Mechanical Inc Plumbing HVAC & Electric, posts 24/7 hours; ranked #2 of 396.
Most-reviewed: Landry Mechanical Inc Plumbing HVAC & Electric, 3,030 Google reviews at 4.8★, the most of 396 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
396 Charlton HVAC contractors are ranked here by CR Score, from ten published factors. 126 are open 24/7, 202 open Saturdays and 144 open Sundays, based on posted hours. The median Google rating is 4.9★ across 396 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Heritage Home Service | 65 | 4.9★ (2,563) | Auburn, 10 mi away | 24/7 | Overall |
| 2 | Landry Mechanical Inc Plumbing HVAC & Electric | 65 | 4.9★ (424) | Charlton | 24/7 | Emergencies |
| 3 | Landry Mechanical Inc Plumbing HVAC & Electric | 65 | 4.8★ (3,030) | Millbury, 12 mi away | 24/7 | Most reviews |
| 4 | Gervais Mechanical Services LLC | 63 | 4.7★ (1,413) | Auburn, 9 mi away | 24/7 | — |
| 5 | Pioneer Valley Environmental | 62 | 4.8★ (1,305) | Ware, 16 mi away | 24/7 | — |
| 6 | Control Point Heating • Cooling • Plumbing • Electric | 62 | 5.0★ (586) | Shrewsbury, 16 mi away | 24/7 | — |
| 7 | AAIR Systems Technologies | 62 | 4.8★ (124) | Oxford, 4 mi away | 24/7 | — |
| 8 | HVAC Experts | 61 | 4.8★ (58) | Charlton | 24/7 | — |
| 9 | Advanced Energy Concepts | 61 | 4.7★ (330) | Auburn, 9 mi away | 24/7 | — |
| 10 | DeWolfe Plumbing, Heating & Cooling | 61 | 4.8★ (748) | West Boylston, 17 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 2,563 Google reviews, listed on Google as “HVAC contractor”.
Based in Charlton
Ranked #2 because of its Google rating and trade focus: 4.9★ from 424 Google reviews, listed on Google as “Heating contractor”.
Based in Millbury, 12 mi away
Ranked #3 because of its Google rating and review volume: 4.8★ from 3,030 Google reviews, the most in Charlton.
Based in Auburn, 9 mi away
Ranked #4 because of its Google rating and trade focus: 4.7★ from 1,413 Google reviews, listed on Google as “HVAC contractor”.
Based in Ware, 16 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 1,305 Google reviews, listed on Google as “HVAC contractor”.
Based in Shrewsbury, 16 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 586 Google reviews, listed on Google as “HVAC contractor”.
Based in Oxford, 4 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 124 Google reviews, listed on Google as “HVAC contractor”.
Based in Charlton
Ranked #8 because of its Google rating and trade focus: 4.8★ from 58 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn, 9 mi away
Ranked #9 because of its Google rating and trade focus: 4.7★ from 330 Google reviews, listed on Google as “HVAC contractor”.
Based in West Boylston, 17 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 748 Google reviews, listed on Google as “HVAC contractor”.
Based in Grafton, 21 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 781 Google reviews, listed on Google as “HVAC contractor”.
Based in Northborough, 23 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 1,017 Google reviews, listed on Google as “HVAC contractor”.
Based in Charlton
Ranked #13 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “HVAC contractor”.
Based in Millbury, 10 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 97 Google reviews, listed on Google as “HVAC contractor”.
Based in Shrewsbury, 16 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 270 Google reviews, listed on Google as “HVAC contractor”.
Based in Spencer, 8 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 46 Google reviews, listed on Google as “HVAC contractor”.
Based in Milford, 23 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 533 Google reviews, listed on Google as “HVAC contractor”.
Based in Worcester, 12 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 119 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn, 8 mi away
Ranked #19 because of its Google rating and trade focus: 4.5★ from 135 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn, 9 mi away
Ranked #20 because of its Google rating and trade focus: 4.4★ from 203 Google reviews, listed on Google as “HVAC contractor”.
Based in Uxbridge, 17 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 126 Google reviews, listed on Google as “HVAC contractor”.
Based in Worcester, 14 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 573 Google reviews, listed on Google as “HVAC contractor”.
Based in Leicester, 9 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “HVAC contractor”.
Based in Webster, 8 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based in Brookline, 16 mi away
Ranked #25 because of its Google rating and trade focus: 4.6★ from 183 Google reviews, listed on Google as “HVAC 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 396 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 |
|---|---|---|
| Advanced Heating & Cooling LLC | 5.0★ (2) | 12 mi |
| C & C Temp Control, Inc. | 5.0★ (2) | 16 mi |
| Dan & Sons Plumbing Heating | 3.0★ (2) | 16 mi |
| Deschene Mechanical LLC | 5.0★ (2) | 16 mi |
| Duke Mechanical LLC | 5.0★ (2) | 6 mi |
| Falke Plumbing & Heating Inc | 5.0★ (2) | 10 mi |
| Five Star Solutions | 4.5★ (8) | 8 mi |
| Grafton Plumbing & Heating | 5.0★ (2) | 11 mi |
| Hollister Plumbing And Heating LLC | 5.0★ (2) | 16 mi |
| JPD Plumbing & Heating LLC | 5.0★ (2) | 16 mi |
| Kavinelli Plumbing & Heating | 5.0★ (2) | 9 mi |
| New England Quality Air Solutions | 5.0★ (2) | 15 mi |
| PerfectTemp Heating, Air & Electric | 4.8★ (102) | 24 mi |
| Pitstop Plumbing and Heating | 5.0★ (2) | 14 mi |
| Protek Heating | 5.0★ (6) | 8 mi |
| Providers | 1.5★ (2) | 12 mi |
| PureComfort Heating, Air & Electric | 4.8★ (111) | 24 mi |
| PureComfort Heating, Air & Electric | 4.8★ (99) | 24 mi |
| Sharpco Air Conditioning & Heating | 5.0★ (2) | 10 mi |
| Wiersma Plumbing & Heating Inc | 5.0★ (2) | 11 mi |
National price ranges in USD, not adjusted for Charlton. 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 396 Charlton 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 Charlton 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 |