139 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Ledyard: Kneeland heating & Cooling LLC, CR Score 90/100; 4.6★ from 169 Google reviews; open 24/7.
Best for emergencies (open 24/7): DTS Oil & Gas Service & Solutions LLC, posts 24/7 hours; ranked #2 of 139.
Most-reviewed: South Shore Heating & Cooling Inc, 564 Google reviews at 4.9★, the most of 139 ranked; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
139 Ledyard HVAC contractors are ranked here by CR Score, from 8 published factors. 23 are open 24/7, 42 open Saturdays and 30 open Sundays, based on posted hours. The median Google rating is 4.6★ across 139 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Kneeland heating & Cooling LLC | 90 | 4.6★ (169) | Groton, 3 mi away | 24/7 | Overall |
| 2 | DTS Oil & Gas Service & Solutions LLC | 89 | 5.0★ (150) | Hebron, 19 mi away | 24/7 | Emergencies |
| 3 | HVAC Restorations LLC. | 87 | 5.0★ (33) | Norwich, 9 mi away | 24/7 | — |
| 4 | Connecticut HVAC Services llc | 87 | 4.6★ (107) | Guilford, 13 mi away | 24/7 | — |
| 5 | C&M Heating and Cooling, LLC | 86 | 4.6★ (28) | Ledyard | 24/7 | — |
| 6 | Controlled Mechanicals | 86 | 5.0★ (8) | Ledyard | 24/7 | — |
| 7 | Russ Energy | 84 | 5.0★ (8) | East Haddam, 6 mi away | 24/7 | — |
| 8 | Carnot Heating | 83 | 4.6★ (9) | Groton, 9 mi away | 24/7 | — |
| 9 | Wentzel Burner Service | 83 | 5.0★ (4) | Ledyard | 24/7 | — |
| 10 | South Shore Heating & Cooling Inc | 83 | 4.9★ (564) | Pawcatuck, 9 mi away | — | Most reviews |
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: 4.6★ from 169 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hebron, 19 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 Norwich, 9 mi away
Ranked #3 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 Guilford, 13 mi away
Ranked #4 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
Ranked #5 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 Ledyard
Ranked #6 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 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 Groton, 9 mi away
Ranked #8 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 Ledyard
Ranked #9 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Pawcatuck, 9 mi away
Ranked #10 because of its Google rating and review volume: 4.9★ from 564 Google reviews, the most Google reviews on this list (564).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Willimantic, 22 mi away
Ranked #11 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 Windham, 12 mi away
Ranked #12 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 Ledyard
Ranked #13 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 Waterford, 7 mi away
Ranked #14 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 Glastonbury, 20 mi away
Ranked #15 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 Pawcatuck, 10 mi away
Ranked #16 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.
Based in Ledyard
Ranked #17 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “HVAC contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Norwich, 11 mi away
Ranked #18 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 Groton, 8 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 283 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 #20 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 Norwich, 7 mi away
Ranked #21 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 Plainfield, 15 mi away
Ranked #22 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 New London, 8 mi away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 422 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hopkinton, 18 mi away
Ranked #24 because of its Google rating and availability: 3.9★ from 56 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Ledyard
Ranked #25 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “HVAC contractor”.
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 139 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 |
|---|---|---|
| Anchor Mechanical Services LLC | In Ledyard | |
| Beaver River Heating & Cooling LLC | 3.0★ (2) | 20 mi |
| Brayman Heating & Cooling, Inc | 3.0★ (2) | 14 mi |
| Chimney Works | 4.0★ (2) | 7 mi |
| City Mechanical LLC | In Ledyard | |
| Clark Heating Cooling And Refrigerating | In Ledyard | |
| Control/Temp | 3.3★ (4) | 22 mi |
| D & J Plumbing & Heating Inc | 4.0★ (4) | 19 mi |
| D J Mc Carthy Plumbing & Heating | 5.0★ (2) | 10 mi |
| Dupuis Energy | 4.5★ (2) | 22 mi |
| E W Leonard Inc | 4.7★ (6) | 23 mi |
| Hank's Plumbing & Heating Services | 5.0★ (2) | 21 mi |
| Jim Steitz Plumbing & Heating LLC | 5.0★ (8) | 22 mi |
| MDK Mechancial LLC | 5.0★ (3) | 12 mi |
| Mystic Electric LLC | 3.5★ (8) | In Ledyard |
| Plumfire Mechanical | In Ledyard | |
| Rainville Plumbing & Heating | 5.0★ (4) | 9 mi |
| Suburban Plumbing & Heating | 4.0★ (4) | 7 mi |
| T & W Plumbing & Heating | 4.5★ (4) | In Ledyard |
| Villa & Sons | 4.0★ (4) | 21 mi |
National price ranges in USD, not adjusted for Ledyard. 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 139 Ledyard 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 Ledyard 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 |