158 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Norwich: DTS Oil & Gas Service & Solutions LLC, CR Score 89/100; 5.0★ from 150 Google reviews; open 24/7.
Best for emergencies (open 24/7): HVAC Restorations LLC., posts 24/7 hours; ranked #2 of 158.
Most-reviewed: Benjamin Franklin Plumbing, 2,408 Google reviews at 4.7★, the most of 158 ranked; ranked #27.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
158 Norwich HVAC contractors are ranked here by CR Score, from 8 published factors. 25 are open 24/7, 46 open Saturdays and 35 open Sundays, based on posted hours. The median Google rating is 4.6★ across 158 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | DTS Oil & Gas Service & Solutions LLC | 89 | 5.0★ (150) | Hebron, 13 mi away | 24/7 | Overall |
| 2 | HVAC Restorations LLC. | 88 | 5.0★ (33) | Norwich | 24/7 | Emergencies |
| 3 | Kneeland heating & Cooling LLC | 87 | 4.6★ (169) | Groton, 7 mi away | 24/7 | — |
| 4 | CNM Heating Cooling Piping LLC | 87 | 5.0★ (186) | Storrs, 19 mi away | 24/7 | — |
| 5 | Connecticut HVAC Services llc | 85 | 4.6★ (107) | Guilford, 13 mi away | 24/7 | — |
| 6 | C&M Heating and Cooling, LLC | 84 | 4.6★ (28) | Ledyard, 4 mi away | 24/7 | — |
| 7 | Russ Energy | 83 | 5.0★ (8) | East Haddam, 6 mi away | 24/7 | — |
| 8 | Sprague Heating & Cooling LLC | 83 | 5.0★ (8) | Windham, 6 mi away | 24/7 | — |
| 9 | Carnot Heating | 83 | 4.6★ (9) | Groton, 6 mi away | 24/7 | — |
| 10 | Air Guarden | 83 | 5.0★ (59) | Norwich | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and availability: 5.0★ from 150 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Norwich
Ranked #2 because of its Google rating and availability: 5.0★ from 33 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Groton, 7 mi away
Ranked #3 because of its Google rating and availability: 4.6★ from 169 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Storrs, 19 mi away
Ranked #4 because of its Google rating and availability: 5.0★ from 186 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Guilford, 13 mi away
Ranked #5 because of its Google rating and availability: 4.6★ from 107 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ledyard, 4 mi away
Ranked #6 because of its Google rating and availability: 4.6★ from 28 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in East Haddam, 6 mi away
Ranked #7 because of its Google rating and availability: 5.0★ from 8 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Windham, 6 mi away
Ranked #8 because of its Google rating and availability: 5.0★ from 8 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Groton, 6 mi away
Ranked #9 because of its Google rating and availability: 4.6★ from 9 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Norwich
Ranked #10 because of its Google rating and availability: 5.0★ from 59 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Glastonbury, 14 mi away
Ranked #11 because of its Google rating and availability: 5.0★ from 17 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Willimantic, 15 mi away
Ranked #12 because of its Google rating and availability: 4.4★ from 80 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Norwich
Ranked #13 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Norwich
Ranked #14 because of its Google rating and trade focus: 4.4★ from 25 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Plainfield, 10 mi away
Ranked #15 because of its Google rating and availability: 4.6★ from 9 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Plainfield, 19 mi away
Ranked #16 because of its Google rating and availability: 5.0★ from 12 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Waterford, 10 mi away
Ranked #17 because of its Google rating and trade focus: 4.6★ from 35 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ledyard, 17 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Old Saybrook, 22 mi away
Ranked #19 because of its Google rating and availability: 4.4★ from 33 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Glastonbury Center, 25 mi away
Ranked #20 because of its Google rating and availability: 5.0★ from 245 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Plainfield, 19 mi away
Ranked #21 because of its Google rating and availability: 4.6★ from 9 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in East Haddam, 9 mi away
Ranked #22 because of its Google rating and availability: 4.2★ from 5 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ledyard, 4 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 175 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Norwich
Ranked #24 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “HVAC contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Pawcatuck, 16 mi away
Ranked #25 because of its Google rating and availability: 3.8★ from 32 Google reviews, open 24/7.
Based on 6 of 8 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 158 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 |
|---|---|---|
| Barrette Mechanical | 3.0★ (2) | 22 mi |
| Beaver River Heating & Cooling LLC | 3.0★ (2) | 21 mi |
| Bell Logistics, LLC | 4.1★ (9) | In Norwich |
| Brayman Heating & Cooling, Inc | 3.0★ (2) | In Norwich |
| Control/Temp | 3.3★ (4) | 15 mi |
| Coppinger Plumbing & Heating | 4.3★ (4) | 24 mi |
| D J Mc Carthy Plumbing & Heating | 5.0★ (2) | 13 mi |
| Dupuis Energy | 4.5★ (2) | 22 mi |
| E W Leonard Inc | 4.7★ (6) | 19 mi |
| Fitzpatrick Heating & Air Conditioning | 5.0★ (2) | 23 mi |
| Hank's Plumbing & Heating Services | 5.0★ (2) | 20 mi |
| Jim Steitz Plumbing & Heating LLC | 5.0★ (8) | 20 mi |
| Michaud Plumbing & Heating Llc | 5.0★ (3) | 15 mi |
| Muscarella Plumbing & Heating Inc | 4.0★ (4) | 10 mi |
| Norwich Plumbing & Heating | 5.0★ (1) | In Norwich |
| Peter Barbeau Plumbing & Heating | 5.0★ (17) | 23 mi |
| Suburban Plumbing & Heating | 4.0★ (4) | 11 mi |
| Sussman & Perry Inc | 5.0★ (2) | 17 mi |
| T & W Plumbing & Heating | 4.5★ (4) | 14 mi |
| Villa & Sons | 4.0★ (4) | 15 mi |
National price ranges in USD, not adjusted for Norwich. 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 158 Norwich HVAC contractors on 8 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. Unknown factors are left out of the score, 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 Norwich data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |