382 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Putnam: Heritage Home Service, CR Score 62/100; 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 382.
Most-reviewed: GEM Plumbing and Heating, 6,353 Google reviews at 4.6★, the most of 382 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
382 Putnam HVAC contractors are ranked here by CR Score, from ten published factors. 104 are open 24/7, 181 open Saturdays and 128 open Sundays, based on posted hours. The median Google rating is 4.8★ across 382 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Heritage Home Service | 62 | 4.9★ (2,563) | Auburn, 21 mi away | 24/7 | Overall |
| 2 | Landry Mechanical Inc Plumbing HVAC & Electric | 61 | 4.8★ (3,030) | Millbury, 21 mi away | 24/7 | Emergencies |
| 3 | GEM Plumbing and Heating | 61 | 4.6★ (6,353) | Lincoln, 22 mi away | 24/7 | Most reviews |
| 4 | Landry Mechanical Inc Plumbing HVAC & Electric | 60 | 4.9★ (424) | Charlton, 16 mi away | 24/7 | — |
| 5 | Notturno Home Services | 60 | 4.9★ (1,586) | Blackstone, 24 mi away | 24/7 | — |
| 6 | Prime Heating & Cooling | 60 | 4.8★ (694) | Smithfield, 19 mi away | 24/7 | — |
| 7 | Gervais Mechanical Services LLC | 59 | 4.7★ (1,413) | Auburn, 21 mi away | 24/7 | — |
| 8 | CNM Heating Cooling Piping LLC | 59 | 5.0★ (186) | Storrs, 18 mi away | 24/7 | — |
| 9 | AAIR Systems Technologies | 58 | 4.8★ (124) | Oxford, 14 mi away | 24/7 | — |
| 10 | Hometown Heating | 58 | 4.9★ (246) | Putnam | — | — |
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, 21 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 Lincoln, 22 mi away
Ranked #3 because of its Google rating and review volume: 4.6★ from 6,353 Google reviews, the most in Putnam.
Based in Charlton, 16 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 424 Google reviews, listed on Google as “Heating contractor”.
Based in Blackstone, 24 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 1,586 Google reviews, listed on Google as “Heating contractor”.
Based in Smithfield, 19 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 694 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn, 21 mi away
Ranked #7 because of its Google rating and trade focus: 4.7★ from 1,413 Google reviews, listed on Google as “HVAC contractor”.
Based in Storrs, 18 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 186 Google reviews, listed on Google as “HVAC contractor”.
Based in Oxford, 14 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 124 Google reviews, listed on Google as “HVAC contractor”.
Based in Putnam
Ranked #10 because of its Google rating and trade focus: 4.9★ from 246 Google reviews, listed on Google as “HVAC contractor”.
Based in Brookline, 14 mi away
Ranked #11 because of its Google rating and trade focus: 4.6★ from 183 Google reviews, listed on Google as “HVAC contractor”.
Based in Uxbridge, 18 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 126 Google reviews, listed on Google as “HVAC contractor”.
Based in Smithfield, 19 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 104 Google reviews, listed on Google as “HVAC contractor”.
Based in Putnam
Ranked #14 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn, 22 mi away
Ranked #15 because of its Google rating and trade focus: 4.7★ from 330 Google reviews, listed on Google as “HVAC contractor”.
Based in Webster, 9 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based in East Greenwich, 13 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “HVAC contractor”.
Based in Millbury, 21 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 97 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn, 14 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 74 Google reviews, listed on Google as “HVAC contractor”.
Based in Uxbridge, 18 mi away
Ranked #20 because of its Google rating and trade focus: 4.6★ from 130 Google reviews, listed on Google as “HVAC contractor”.
Based in Canton, 14 mi away
Ranked #21 because of its Google rating and trade focus: 4.6★ from 54 Google reviews, listed on Google as “Heating contractor”.
Based in Plainfield, 10 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn, 18 mi away
Ranked #23 because of its Google rating and trade focus: 4.4★ from 203 Google reviews, listed on Google as “HVAC contractor”.
Based in Southbridge, 6 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 119 Google reviews, listed on Google as “HVAC contractor”.
Based in Fall River, 13 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 17 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 382 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) | In Putnam |
| Air Man Heating & Cooling - Mass | 4.8★ (20) | 18 mi |
| Araya HVAC Services LLC | 5.0★ (7) | 14 mi |
| Barrette Mechanical | 3.0★ (2) | In Putnam |
| Clermont Mechanical | 5.0★ (2) | In Putnam |
| Corbett HVAC Services LLC | 4.4★ (80) | 21 mi |
| Dan & Sons Plumbing Heating | 3.0★ (2) | 14 mi |
| Deschene Mechanical LLC | 5.0★ (2) | 14 mi |
| Duke Mechanical LLC | 5.0★ (2) | 14 mi |
| Freedom Mechanical Services Inc | 2.3★ (3) | 8 mi |
| Hollister Plumbing And Heating LLC | 5.0★ (2) | 14 mi |
| JB Heating and Air-Conditioning in Grosvenor Dale - HVAC Contractor, HVAC Installation | 5.0★ (1) | In Putnam |
| Ocean State Mechanical Inc | 4.9★ (30) | 23 mi |
| Old Time Refrigeration, Inc. | 4.0★ (8) | 13 mi |
| Pomfret Fuel Services LLC | 3.0★ (2) | In Putnam |
| R&B Plumbing & Heating | 4.0★ (2) | 6 mi |
| Service Plus Plumbing | 4.9★ (31) | In Putnam |
| Sharpco Air Conditioning & Heating | 5.0★ (2) | In Putnam |
| Shelly Heating | 4.4★ (13) | 14 mi |
| Spicer Propane | In Putnam |
National price ranges in USD, not adjusted for Putnam. 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 Connecticut, Connecticut Department of Consumer Protection licenses Heating, piping, cooling and sheet metal licenses.
No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.
Guide checked October 2026. How we verify licenses
In Connecticut, 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 382 Putnam 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 Putnam 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 |