Top 50 of 880 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank
25 of the 50 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.
#1 for emergency heating and cooling in Harvard: Papalia Home Services, open 24/7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
| Rank | Business | CR Score | Google rating | Based in | Hours |
|---|---|---|---|---|---|
| 1 | Papalia Home Services | 67 | 4.9★ (3,978) | Acton, 4 mi away | 24/7 |
| 2 | MillTown Plumbing, Heating, Cooling and Electrical | 64 | 4.8★ (2,927) | Chelmsford, 15 mi away | 24/7 |
| 3 | Precision Home Services | 63 | 4.9★ (1,017) | Northborough, 11 mi away | 24/7 |
| 4 | Wilson Brothers Heating & Air Conditioning, Inc. | 63 | 4.9★ (1,275) | Fitchburg, 12 mi away | 24/7 |
| 5 | A. Fagundes Plumbing & Heating Inc. | 63 | 4.8★ (1,626) | Billerica, 15 mi away | 24/7 |
| 6 | Central Cooling & Heating | 62 | 4.9★ (3,169) | Woburn, 22 mi away | 24/7 |
| 7 | Nicholson Plumbing, Electrical, Heating, and Air Conditioning | 62 | 4.8★ (2,950) | Holliston, 22 mi away | 24/7 |
| 8 | Heritage Home Service | 62 | 4.9★ (2,563) | Auburn, 23 mi away | 24/7 |
| 9 | CPS Heating & Cooling | 62 | 4.9★ (781) | Grafton, 16 mi away | 24/7 |
| 10 | Heritage Home Service | 62 | 4.8★ (3,352) | Wilmington, 23 mi away | 24/7 |
24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.
Open 24/7 · 4.9 from 3,978 Google reviews
#2MillTown Plumbing, Heating, Cooling and Electrical
Open 24/7 · 4.8 from 2,927 Google reviews
Open 24/7 · 4.9 from 1,017 Google reviews
#4Wilson Brothers Heating & Air Conditioning, Inc.
Open 24/7 · 4.9 from 1,275 Google reviews
#5A. Fagundes Plumbing & Heating Inc.
Open 24/7 · 4.8 from 1,626 Google reviews
Open 24/7 · 4.9 from 3,169 Google reviews
#7Nicholson Plumbing, Electrical, Heating, and Air Conditioning
Open 24/7 · 4.8 from 2,950 Google reviews
Open 24/7 · 4.9 from 2,563 Google reviews
24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 880 is on the HVAC contractors page.
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 3,978 Google reviews, listed on Google as “HVAC contractor”.
Based in Chelmsford, 15 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 2,927 Google reviews, listed on Google as “HVAC contractor”.
Based in Northborough, 11 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 1,017 Google reviews, listed on Google as “HVAC contractor”.
Based in Fitchburg, 12 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 1,275 Google reviews, listed on Google as “HVAC contractor”.
Based in Billerica, 15 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 1,626 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Woburn, 22 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 3,169 Google reviews, listed on Google as “HVAC contractor”.
Based in Holliston, 22 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 2,950 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn, 23 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 2,563 Google reviews, listed on Google as “HVAC contractor”.
Based in Grafton, 16 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 781 Google reviews, listed on Google as “HVAC contractor”.
Based in Wilmington, 23 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 3,352 Google reviews, listed on Google as “HVAC contractor”.
Based in Acton, 8 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 223 Google reviews, listed on Google as “HVAC contractor”.
Based in West Boylston, 15 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 748 Google reviews, listed on Google as “HVAC contractor”.
Based in Millbury, 23 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 3,030 Google reviews, listed on Google as “HVAC contractor”.
Based in Framingham, 18 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 1,322 Google reviews, listed on Google as “HVAC contractor”.
Based in Watertown, 23 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 2,862 Google reviews, listed on Google as “HVAC contractor”.
Based in Chelmsford, 16 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 443 Google reviews, listed on Google as “HVAC contractor”.
Based in Watertown, 21 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 1,625 Google reviews, listed on Google as “HVAC contractor”.
Based in Shrewsbury, 18 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 586 Google reviews, listed on Google as “HVAC contractor”.
Based in Billerica, 17 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 476 Google reviews, listed on Google as “Heating contractor”.
Based in Nashua, 19 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 793 Google reviews, listed on Google as “HVAC contractor”.
Based in Milford, 24 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 1,832 Google reviews, listed on Google as “HVAC contractor”.
Based in Chelmsford, 14 mi away
Ranked #22 because of its Google rating and trade focus: 4.7★ from 427 Google reviews, listed on Google as “HVAC contractor”.
Based in Wilmington, 22 mi away
Ranked #23 because of its Google rating and trade focus: 4.6★ from 2,076 Google reviews, listed on Google as “HVAC contractor”.
Based in Framingham, 18 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 581 Google reviews, listed on Google as “HVAC contractor”.
Based in Maynard, 8 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 100 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.
Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.
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 |
|---|---|---|
| Reputation | 15% | Google star rating, adjusted for how many reviews back it |
| Credentials | 15% | Active state license, bond and workers’ comp on file |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list |
| Recency | 5% | Share of reviews from the last 12 months |
| Availability | 15% | Weekly open hours, Saturday, Sunday, 24/7 or same-day |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) |
| Proximity | 5% | Based in the city scores highest, less the farther away it is |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are |