386 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Killingly Center: GEM Plumbing and Heating, CR Score 61/100; 4.6★ from 6,353 Google reviews; open 24/7.
Best for emergencies (open 24/7): Notturno Home Services, posts 24/7 hours; ranked #2 of 386.
Most-reviewed: Martel Plumbing & Heating, 1,825 Google reviews at 4.9★, the most of 386 ranked after GEM Plumbing and Heating; ranked #12.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
386 Killingly Center HVAC contractors are ranked here by CR Score, from ten published factors. 95 are open 24/7, 186 open Saturdays and 129 open Sundays, based on posted hours. The median Google rating is 4.8★ across 386 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | GEM Plumbing and Heating | 61 | 4.6★ (6,353) | Lincoln, 21 mi away | 24/7 | Overall |
| 2 | Notturno Home Services | 60 | 4.9★ (1,586) | Blackstone, 25 mi away | 24/7 | Emergencies |
| 3 | Prime Heating & Cooling | 60 | 4.8★ (694) | Smithfield, 18 mi away | 24/7 | — |
| 4 | CNM Heating Cooling Piping LLC | 59 | 5.0★ (186) | Storrs, 18 mi away | 24/7 | — |
| 5 | Landry Mechanical Inc Plumbing HVAC & Electric | 59 | 4.9★ (424) | Charlton, 22 mi away | 24/7 | — |
| 6 | Air Duct Cleaning of New England | 58 | 5.0★ (104) | Smithfield, 17 mi away | 24/7 | — |
| 7 | Emergency Response Plumbing, Heating and Air Conditioning | 57 | 4.8★ (259) | Warwick, 23 mi away | 24/7 | — |
| 8 | Tetra | 57 | 4.6★ (183) | Brookline, 17 mi away | 24/7 | — |
| 9 | Doc's Peak Heating & Air Conditioning Inc | 57 | 4.9★ (126) | Uxbridge, 21 mi away | 24/7 | — |
| 10 | AirTemp HVAC | 57 | 5.0★ (106) | Johnston, 21 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.6★ from 6,353 Google reviews, the most in Killingly Center.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Blackstone, 25 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 1,586 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Smithfield, 18 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 694 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Storrs, 18 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 186 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Charlton, 22 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 424 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Smithfield, 17 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 104 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Warwick, 23 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 259 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Brookline, 17 mi away
Ranked #8 because of its Google rating and trade focus: 4.6★ from 183 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Uxbridge, 21 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 126 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Johnston, 21 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 106 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Plainfield, 6 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lincoln, 24 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 1,825 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Oxford, 19 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 124 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Putnam, 6 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 246 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Providence, 23 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 146 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Greenwich, 14 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Exeter, 5 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 61 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Warwick, 24 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 110 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Auburn, 17 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 on 8 of 10 factors; credentials and recency not yet collected.
Based in Uxbridge, 21 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 on 8 of 10 factors; credentials and recency not yet collected.
Based in Putnam, 1 mi away
Ranked #21 because of its Google rating and trade focus: 4.5★ from 26 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Canton, 17 mi away
Ranked #22 because of its Google rating and trade focus: 4.6★ from 54 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Webster, 14 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in North Smithfield, 21 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 45 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fall River, 14 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#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 386 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 |
|---|---|---|
| Air Man Heating & Cooling - Mass | 4.8★ (20) | 22 mi |
| Air Pro Services LLC | 4.6★ (9) | 15 mi |
| Araya HVAC Services LLC | 5.0★ (7) | 17 mi |
| Barrette Mechanical | 3.0★ (2) | 3 mi |
| Dan & Sons Plumbing Heating | 3.0★ (2) | 17 mi |
| Deschene Mechanical LLC | 5.0★ (2) | 17 mi |
| Desmarais Plumbing & Heating Inc | 3.0★ (2) | 17 mi |
| Dupuis Energy | 4.5★ (2) | 19 mi |
| Eastern HVAC Solutions, LLC | 5.0★ (28) | 25 mi |
| Fellowship Plumbing & Mechanical | 4.6★ (31) | 23 mi |
| Hollister Plumbing And Heating LLC | 5.0★ (2) | 17 mi |
| JPD Plumbing & Heating LLC | 5.0★ (2) | 17 mi |
| Old Time Refrigeration, Inc. | 4.0★ (8) | 14 mi |
| Oliveira Plumbing & Heating | 3.0★ (2) | 19 mi |
| Pomfret Fuel Services LLC | 3.0★ (2) | 5 mi |
| R&B Plumbing & Heating | 4.0★ (2) | 7 mi |
| SB Carbone Plumbing & Heating | 4.0★ (45) | 19 mi |
| Sharpco Air Conditioning & Heating | 5.0★ (2) | 11 mi |
| Shelly Heating | 4.4★ (13) | 17 mi |
| William J Lamar & Sons Inc | 3.0★ (2) | 17 mi |
National price ranges in USD, not adjusted for Killingly Center. 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 386 Killingly Center 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 Killingly Center 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 |