241 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Willimantic: CNM Heating Cooling Piping LLC, CR Score 91/100; 5.0★ from 186 Google reviews; open 24/7.
Best for emergencies (open 24/7): DTS Oil & Gas Service & Solutions LLC, posts 24/7 hours; ranked #2 of 241.
Most-reviewed: Benjamin Franklin Plumbing, 2,408 Google reviews at 4.7★, the most of 241 ranked; ranked #21.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
241 Willimantic HVAC contractors are ranked here by CR Score, from 8 published factors. 47 are open 24/7, 89 open Saturdays and 64 open Sundays, based on posted hours. The median Google rating is 4.7★ across 241 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | CNM Heating Cooling Piping LLC | 91 | 5.0★ (186) | Storrs, 4 mi away | 24/7 | Overall |
| 2 | DTS Oil & Gas Service & Solutions LLC | 90 | 5.0★ (150) | Hebron, 7 mi away | 24/7 | Emergencies |
| 3 | Degree Heating and Cooling | 89 | 4.8★ (1,302) | Glastonbury, 20 mi away | 24/7 | — |
| 4 | Absolute Air Services, LLC | 89 | 4.9★ (1,027) | Portland, 22 mi away | 24/7 | — |
| 5 | SM Mechanical Services LLC | 88 | 4.8★ (618) | Glastonbury, 21 mi away | 24/7 | — |
| 6 | Corbett HVAC Services LLC | 87 | 4.4★ (80) | Willimantic | 24/7 | — |
| 7 | Wyman Energy Services Inc. | 86 | 4.8★ (172) | Manchester, 18 mi away | 24/7 | — |
| 8 | Limitless Mechanical Services | 85 | 5.0★ (64) | Manchester, 17 mi away | 24/7 | — |
| 9 | HVAC Restorations LLC. | 85 | 5.0★ (33) | Norwich, 12 mi away | 24/7 | — |
| 10 | Crown Point Heating And Cooling | 85 | 5.0★ (17) | Glastonbury, 7 mi away | 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 186 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hebron, 7 mi away
Ranked #2 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 Glastonbury, 20 mi away
Ranked #3 because of its Google rating and availability: 4.8★ from 1,302 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Portland, 22 mi away
Ranked #4 because of its Google rating and availability: 4.9★ from 1,027 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Glastonbury, 21 mi away
Ranked #5 because of its Google rating and availability: 4.8★ from 618 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Willimantic
Ranked #6 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 Manchester, 18 mi away
Ranked #7 because of its Google rating and availability: 4.8★ from 172 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Manchester, 17 mi away
Ranked #8 because of its Google rating and availability: 5.0★ from 64 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Norwich, 12 mi away
Ranked #9 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 Glastonbury, 7 mi away
Ranked #10 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 South Windsor, 22 mi away
Ranked #11 because of its Google rating and trade focus: 4.7★ from 1,132 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Groton, 21 mi away
Ranked #12 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 East Hartford, 25 mi away
Ranked #13 because of its Google rating and availability: 4.9★ from 656 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cheshire Village, 24 mi away
Ranked #14 because of its Google rating and availability: 4.9★ from 79 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Glastonbury Center, 12 mi away
Ranked #15 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 Wethersfield, 23 mi away
Ranked #16 because of its Google rating and availability: 4.7★ from 100 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hartford, 24 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 359 Google reviews, listed on Google as “HVAC contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Guilford, 23 mi away
Ranked #18 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 Plainfield, 9 mi away
Ranked #19 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 Glastonbury, 20 mi away
Ranked #20 because of its Google rating and availability: 4.5★ from 89 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Glastonbury Center, 8 mi away
Ranked #21 because of its Google rating and review volume: 4.7★ from 2,408 Google reviews, the most Google reviews on this list (2,408).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Plainfield, 14 mi away
Ranked #22 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 Windham, 11 mi away
Ranked #23 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 Glastonbury, 21 mi away
Ranked #24 because of its Google rating and availability: 5.0★ from 24 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Plainfield, 11 mi away
Ranked #25 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.
#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 241 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 Control Mechanical LLC | 5.0★ (4) | 18 mi |
| Angeloni Refrigeration & Heating | 5.0★ (2) | 21 mi |
| Barrette Mechanical | 3.0★ (2) | 18 mi |
| Brayman Heating & Cooling, Inc | 3.0★ (2) | 9 mi |
| Cowan Family Plumbing & Heating | 5.0★ (2) | 12 mi |
| D J Mc Carthy Plumbing & Heating | 5.0★ (2) | 24 mi |
| Fitzpatrick Heating & Air Conditioning | 5.0★ (2) | 23 mi |
| High Tech Comfort LLC | 5.0★ (2) | 22 mi |
| Knight's Oil & Heating Services | 3.5★ (2) | In Willimantic |
| Mainly Stone Masonry | 3.0★ (2) | 22 mi |
| Maintenance Experts of Hartford | In Willimantic | |
| Medford Wellington Service Co Inc | 5.0★ (2) | 23 mi |
| PlumbMaster,llc | 3.0★ (2) | 14 mi |
| Pomfret Fuel Services LLC | 3.0★ (2) | 17 mi |
| R J Riquier Plumbing & Heating Inc | In Willimantic | |
| Reliable Mechanical Contractors | 3.0★ (10) | 20 mi |
| Sharpco Air Conditioning & Heating | 5.0★ (2) | 24 mi |
| SLS HEATING LLC- 24 HOUR EMERGENCY SERVICE | 3.4★ (62) | 20 mi |
| Sussman & Perry Inc | 5.0★ (2) | In Willimantic |
| Tucker Mechanical | 4.4★ (7) | 25 mi |
National price ranges in USD, not adjusted for Willimantic. 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 241 Willimantic 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 Willimantic 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 |