609 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Hamilton Worcester: Heritage Home Service, CR Score 67/100; 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 609.
Most-reviewed: Papalia Home Services, 3,978 Google reviews at 4.9★, the most of 609 ranked; ranked #9.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
609 Hamilton Worcester HVAC contractors are ranked here by CR Score, from ten published factors. 189 are open 24/7, 313 open Saturdays and 230 open Sundays, based on posted hours. The median Google rating is 4.9★ across 609 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Heritage Home Service | 67 | 4.9★ (2,563) | Auburn, 4 mi away | 24/7 | Overall |
| 2 | Landry Mechanical Inc Plumbing HVAC & Electric | 66 | 4.8★ (3,030) | Millbury, 4 mi away | 24/7 | Emergencies |
| 3 | Control Point Heating • Cooling • Plumbing • Electric | 65 | 5.0★ (586) | Shrewsbury, 3 mi away | 24/7 | — |
| 4 | Gervais Mechanical Services LLC | 64 | 4.7★ (1,413) | Auburn, 4 mi away | 24/7 | — |
| 5 | DeWolfe Plumbing, Heating & Cooling | 64 | 4.8★ (748) | West Boylston, 5 mi away | 24/7 | — |
| 6 | Precision Home Services | 64 | 4.9★ (1,017) | Northborough, 10 mi away | 24/7 | — |
| 7 | CPS Heating & Cooling | 64 | 4.9★ (781) | Grafton, 8 mi away | 24/7 | — |
| 8 | Landry Mechanical Inc Plumbing HVAC & Electric | 63 | 4.8★ (270) | Shrewsbury, 2 mi away | 24/7 | — |
| 9 | Papalia Home Services | 63 | 4.9★ (3,978) | Acton, 22 mi away | 24/7 | Most reviews |
| 10 | Nicholson Plumbing, Electrical, Heating, and Air Conditioning | 62 | 4.8★ (2,950) | Holliston, 19 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 Millbury, 4 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 3,030 Google reviews, listed on Google as “HVAC contractor”.
Based in Shrewsbury, 3 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 586 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn, 4 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 West Boylston, 5 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 748 Google reviews, listed on Google as “HVAC contractor”.
Based in Northborough, 10 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 1,017 Google reviews, listed on Google as “HVAC contractor”.
Based in Grafton, 8 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 781 Google reviews, listed on Google as “HVAC contractor”.
Based in Shrewsbury, 2 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 270 Google reviews, listed on Google as “HVAC contractor”.
Based in Acton, 22 mi away
Ranked #9 because of its Google rating and review volume: 4.9★ from 3,978 Google reviews, the most in Hamilton Worcester.
Based in Holliston, 19 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 2,950 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn, 4 mi away
Ranked #11 because of its Google rating and trade focus: 4.7★ from 330 Google reviews, listed on Google as “HVAC contractor”.
Based in Charlton, 11 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 424 Google reviews, listed on Google as “Heating contractor”.
Based in Worcester, 3 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 119 Google reviews, listed on Google as “HVAC contractor”.
Based in Worcester, 2 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 573 Google reviews, listed on Google as “HVAC contractor”.
Based in Millbury, 4 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 97 Google reviews, listed on Google as “HVAC contractor”.
Based in Blackstone, 22 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 1,586 Google reviews, listed on Google as “Heating contractor”.
Based in Framingham, 18 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 1,322 Google reviews, listed on Google as “HVAC contractor”.
Based in Holliston, 17 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 2,938 Google reviews, listed on Google as “HVAC contractor”.
Based in Milford, 15 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 533 Google reviews, listed on Google as “HVAC contractor”.
Based in Worcester, 4 mi away
Ranked #20 because of its Google rating and trade focus: 4.8★ from 76 Google reviews, listed on Google as “HVAC contractor”.
Based in Worcester, 2 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 1,099 Google reviews, listed on Google as “HVAC contractor”.
Based in Franklin, 22 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 990 Google reviews, listed on Google as “HVAC contractor”.
Based in Framingham, 17 mi away
Ranked #23 because of its Google rating and trade focus: 4.8★ from 581 Google reviews, listed on Google as “HVAC contractor”.
Based in Northborough, 8 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 101 Google reviews, listed on Google as “HVAC contractor”.
Based in Charlton, 5 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 58 Google reviews, listed on Google as “HVAC contractor”.
#1 to #25 are shown in full above. Here are #26 to #38, in CR Score order; each links to its profile. We publish the top 38 of 609 ranked HVAC contractors here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | McDonald Heating Air Conditioning Plumbing, Inc. | 60 | 4.5★ (135) | 5 mi |
| 27 | Pioneer Valley Environmental | 60 | 4.8★ (1,305) | 24 mi |
| 38 | Gervais Plumbing Heating & Air Conditioning | 59 | 4.4★ (203) | 7 mi |
National price ranges in USD, not adjusted for Hamilton Worcester. 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 609 Hamilton Worcester 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 Hamilton Worcester 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 |