63/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 186 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 186 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 699 Storrs Rd, Storrs, CT 06268
Best HVAC Contractors in Windham, CT (2026)
222 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Windham: CNM Heating Cooling Piping LLC, CR Score 63/100; 5.0★ from 186 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): DTS Oil & Gas Service & Solutions LLC, posts 24/7 hours; ranked #2 of 222.
- 16
Most-reviewed: Benjamin Franklin Plumbing, 2,408 Google reviews at 4.7★, the most of 222 ranked; ranked #16.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
222 Windham HVAC contractors are ranked here by CR Score, from ten published factors. 39 are open 24/7, 75 open Saturdays and 50 open Sundays, based on posted hours. The median Google rating is 4.7★ across 222 rated businesses.
Top 10 HVAC contractors in Windham at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | CNM Heating Cooling Piping LLC | 63 | 5.0★ (186) | Storrs, 6 mi away | 24/7 | Overall |
| 2 | DTS Oil & Gas Service & Solutions LLC | 62 | 5.0★ (150) | Hebron, 8 mi away | 24/7 | Emergencies |
| 3 | Degree Heating and Cooling | 61 | 4.8★ (1,302) | Glastonbury, 22 mi away | 24/7 | — |
| 4 | Absolute Air Services, LLC | 61 | 4.9★ (1,027) | Portland, 24 mi away | 24/7 | — |
| 5 | Corbett HVAC Services LLC | 59 | 4.4★ (80) | Willimantic, 4 mi away | 24/7 | — |
| 6 | SM Mechanical Services LLC | 59 | 4.8★ (618) | Glastonbury, 24 mi away | 24/7 | — |
| 7 | Eric Sabo Plumbing Heating & Cooling, LLC. | 58 | 4.9★ (264) | Hebron, 4 mi away | — | — |
| 8 | Sprague Heating & Cooling LLC | 58 | 5.0★ (8) | Windham | 24/7 | — |
| 9 | HVAC Restorations LLC. | 58 | 5.0★ (33) | Norwich, 11 mi away | 24/7 | — |
| 10 | Wyman Energy Services Inc. | 58 | 4.8★ (172) | Manchester, 20 mi away | 24/7 | — |
The 222 best HVAC contractors in Windham, ranked
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.
Based in Hebron, 8 mi away
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 150 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 150 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 33 Carriage Dr, Lebanon, CT 06249
Based in Glastonbury, 22 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 1,302 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,302 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 160 Oak St #508, Glastonbury, CT 06033
Based in Portland, 24 mi away
61/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 1,027 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,027 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1116 Portland-Cobalt Rd, Portland, CT 06480
Based in Willimantic, 4 mi away
59/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.4★ from 80 Google reviews, listed on Google as “HVAC contractor”.
- 4.4★ from 80 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 45 Mansfield Ave, Willimantic, CT 06226
Based in Glastonbury, 24 mi away
59/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 618 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 618 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 75 Naubuc Avenue Rear Unit, Glastonbury, CT 06033
Based in Hebron, 4 mi away
58/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 264 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 264 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
Based in Windham
58/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 8 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Norwich, 11 mi away
58/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 33 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 104 Browning Rd, Norwich, CT 06360
Based in Manchester, 20 mi away
58/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 172 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 172 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 61 Loomis St, Manchester, CT 06042
Based in South Windsor, 25 mi away
58/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.7★ from 1,132 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 1,132 Google reviews
- Hours
- Mon–Sun 7 AM–10 PM
- Address
- 56 Glendale Rd, South Windsor, CT 06074
Based in Glastonbury, 9 mi away
57/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 17 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1598 Exeter Rd, Lebanon, CT 06249
Based in Ellington, 14 mi away
57/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 366 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 366 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun closed
Based in Groton, 20 mi away
57/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.6★ from 169 Google reviews, listed on Google as “Heating contractor”.
- 4.6★ from 169 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5 Oakwood Dr, Gales Ferry, CT 06335
Based in Manchester, 20 mi away
57/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 64 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 64 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 276 Oakland St, Manchester, CT 06042
Based in Glastonbury Center, 11 mi away
56/100CR ScoreRanked #16 because of its Google rating and review volume: 4.7★ from 2,408 Google reviews, the most in Windham.
- 4.7★ from 2,408 Google reviews
- Hours
- Mon–Sun 7 AM–8 PM
- Address
- 580 Lake Rd, Andover, CT 06232
Based in Plainfield, 7 mi away
56/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “HVAC contractor”.
- 4.6★ from 9 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 54 Woodchuck Hill Rd, Canterbury, CT 06331
#18 Hometown Heating
Based in Putnam, 12 mi away
56/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 246 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 246 Google reviews
- Hours
- Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
- Address
- 549 Wolf Den Rd, Brooklyn, CT 06234
Based in Guilford, 22 mi away
56/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.6★ from 107 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.6★ from 107 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 153 #103 Boston post rd, East Lyme, CT 06333
Based in Ledyard, 14 mi away
56/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.6★ from 28 Google reviews, listed on Google as “HVAC contractor”.
- 4.6★ from 28 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Plainfield, 12 mi away
56/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 12 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 127 Wauregan Rd, Brooklyn, CT 06234
Based in Plainfield, 9 mi away
56/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “HVAC contractor”.
- 4.6★ from 9 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Ellington, 18 mi away
56/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 451 Google reviews, listed on Google as “Heating contractor”.
- 4.9★ from 451 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 994 Hartford Turnpike, Vernon, CT 06066
Based in Glastonbury, 23 mi away
55/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.5★ from 89 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.5★ from 89 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 17 Nutmeg Ln, Glastonbury, CT 06033
#25 Yankee Oil Inc
Based in Storrs, 7 mi away
55/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.7★ from 107 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.7★ from 107 Google reviews
- Hours
- Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
- Address
- 537 Stafford Rd, Mansfield Center, CT 06250
HVAC contractors ranked #26 to #50
#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 222 ranked HVAC contractors here; the rest are on their profiles.
Also serving Windham
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) | 21 mi |
| Angeloni Refrigeration & Heating | 5.0★ (2) | 23 mi |
| Barrette Mechanical | 3.0★ (2) | 16 mi |
| Brayman Heating & Cooling, Inc | 3.0★ (2) | 8 mi |
| Control/Temp | 3.3★ (4) | 3 mi |
| Controlled Mechanicals | 5.0★ (8) | 19 mi |
| Cowan Family Plumbing & Heating | 5.0★ (2) | 14 mi |
| Cundiff HVAC | 4.4★ (23) | 25 mi |
| D J Mc Carthy Plumbing & Heating | 5.0★ (2) | 24 mi |
| Fitzpatrick Heating & Air Conditioning | 5.0★ (2) | 24 mi |
| High Tech Comfort LLC | 5.0★ (2) | 24 mi |
| Lessard A/C & Heating LLC | 5.0★ (1) | 8 mi |
| MDK Mechancial LLC | 5.0★ (3) | 9 mi |
| Norwich Plumbing & Heating | 5.0★ (1) | 11 mi |
| Pomfret Fuel Services LLC | 3.0★ (2) | 15 mi |
| R&B Plumbing & Heating | 4.0★ (2) | 24 mi |
| Reliable Mechanical Contractors | 3.0★ (10) | 22 mi |
| Sharpco Air Conditioning & Heating | 5.0★ (2) | 24 mi |
| Sussman & Perry Inc | 5.0★ (2) | 5 mi |
| Villa & Sons | 4.0★ (4) | 3 mi |
How much do HVAC contractors cost in Windham?
National price ranges in USD, not adjusted for Windham. 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 |
How to check an HVAC contractor's license in Connecticut
In Connecticut, Connecticut Department of Consumer Protection licenses Heating, piping, cooling and sheet metal licenses.
- Search the business name or license number on the Connecticut Department of Consumer Protection license lookup.
- Check that the status is active and the name matches the contract or truck.
- Ask for proof of insurance before work starts.
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
When to hire an HVAC contractor in Connecticut
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.
How we ranked Windham HVAC contractors
We scored 222 Windham 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 Windham 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 |
HVAC contractors in Windham: frequently asked questions
Who is the best HVAC contractor in Windham?
By CR Score, the highest-ranked HVAC contractor in Windham, CT is CNM Heating Cooling Piping LLC with a CR Score of 63/100. It has 5.0★ from 186 Google reviews. It is open 24/7. DTS Oil & Gas Service & Solutions LLC (#2) and Degree Heating and Cooling (#3) follow. We ranked 222 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Windham?
ContractorsRanked ranks 222 HVAC contractors serving Windham, CT. 3 of them are based in Windham; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which HVAC contractors in Windham are open 24/7?
39 ranked HVAC contractors in Windham post 24/7 hours. The highest-ranked are CNM Heating Cooling Piping LLC (#1), DTS Oil & Gas Service & Solutions LLC (#2) and Degree Heating and Cooling (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Windham work on weekends?
75 of 222 ranked HVAC contractors post Saturday hours and 50 post Sunday hours. The highest-ranked open Saturdays are CNM Heating Cooling Piping LLC (#1), DTS Oil & Gas Service & Solutions LLC (#2) and Degree Heating and Cooling (#3). Posted hours are office hours; crews may book weekend jobs separately.
How do I check an HVAC contractor's license in Connecticut?
In Connecticut, Connecticut Department of Consumer Protection handles licensing and covers Heating, piping, cooling and sheet metal licenses. Search the business or license number at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx.
How much does ac replacement cost in Windham?
AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Windham. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Windham HVAC contractors have?
The median Google rating among 222 rated HVAC contractors in Windham is 4.7★, with a median of 17 reviews. Benjamin Franklin Plumbing has the most, 2,408 reviews, and ranks #16. We adjust ratings for review count, so a few five-star reviews cannot top the list.
When is the best time to hire an HVAC contractor in Windham?
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.
Update log for Windham
- October 2026: CR Scores recalculated for 222 hvac contractors serving Windham.
- October 2026: 3 duplicate listings merged.
More HVAC contractors and Windham pages
HVAC contractors near Windham
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Other trades in Windham
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- Plumbers in Windham186 ranked
- Electricians in Windham147 ranked
- General contractors in Windham225 ranked
- Painters in Windham46 ranked
- Landscapers in Windham85 ranked
- Handymen in Windham24 ranked
- Kitchen remodelers in Windham113 ranked
- Bathroom remodelers in Windham107 ranked
- Flooring contractors in Windham94 ranked
- Tile installers in Windham8 ranked
- Concrete contractors in Windham59 ranked
- Fence contractors in Windham44 ranked
- Deck builders in Windham70 ranked
- Siding contractors in Windham375 ranked
- Window installers in Windham335 ranked
- Gutter installers in Windham89 ranked
- Insulation contractors in Windham23 ranked
- Solar installers in Windham125 ranked
- Garage door repair companies in Windham27 ranked
- Foundation repair companies in Windham120 ranked
- Tree services in Windham177 ranked
- Masonry contractors in Windham91 ranked
- Water damage restoration companies in Windham322 ranked
- Home builders in Windham277 ranked
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- All contractors in Windham