65/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 7,956 Google reviews, the most in Windham.
- 4.8★ from 7,956 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 28 Commercial Ct, Auburn, NH 03032
Best HVAC Contractors in Windham, NH (2026)
733 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Windham: Heritage Home Service, CR Score 65/100; 4.8★ from 7,956 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): MillTown Plumbing, Heating, Cooling and Electrical, posts 24/7 hours; ranked #2 of 733.
- 23
Most-reviewed: Joyce Cooling & Heating Inc., 5,079 Google reviews at 4.9★, the most of 733 ranked after Heritage Home Service; ranked #23.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
733 Windham HVAC contractors are ranked here by CR Score, from ten published factors. 213 are open 24/7, 363 open Saturdays and 263 open Sundays, based on posted hours. The median Google rating is 4.9★ across 733 rated businesses.
Top 10 HVAC contractors in Windham at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Heritage Home Service | 65 | 4.8★ (7,956) | Auburn, 11 mi away | 24/7 | Overall |
| 2 | MillTown Plumbing, Heating, Cooling and Electrical | 63 | 4.8★ (2,927) | Chelmsford, 13 mi away | 24/7 | Emergencies |
| 3 | Walley's Heating & Air | 63 | 4.9★ (793) | Nashua, 8 mi away | 24/7 | — |
| 4 | A. Fagundes Plumbing & Heating Inc. | 63 | 4.8★ (1,626) | Billerica, 11 mi away | 24/7 | — |
| 5 | High Ground Service Pros - Plumbers Electricians & HVAC Technicians | 63 | 4.9★ (2,303) | Manchester, 16 mi away | 24/7 | — |
| 6 | Heritage Home Service | 62 | 4.8★ (3,352) | Wilmington, 16 mi away | 24/7 | — |
| 7 | Northeast Heating & Cooling | 62 | 5.0★ (449) | Haverhill, 10 mi away | 24/7 | — |
| 8 | 128 Plumbing, Heating, Cooling & Electric | 62 | 5.0★ (562) | North Andover, 13 mi away | 24/7 | — |
| 9 | Central Cooling & Heating | 62 | 4.9★ (3,169) | Woburn, 21 mi away | 24/7 | — |
| 10 | Wilson Brothers Heating & Air Conditioning, Inc. | 62 | 4.9★ (1,275) | Fitchburg, 16 mi away | 24/7 | — |
The 733 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 Chelmsford, 13 mi away
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.8★ from 2,927 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 2,927 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 131 Stedman St #6, Chelmsford, MA 01824
Based in Nashua, 8 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 793 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 793 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 35 E Hollis St, Nashua, NH 03060
Based in Billerica, 11 mi away
63/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 1,626 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.8★ from 1,626 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 116 Pawtucket Blvd, Tyngsborough, MA 01879
Based in Manchester, 16 mi away
63/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 2,303 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 2,303 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 201 Allard Dr, Manchester, NH 03102
Based in Wilmington, 16 mi away
62/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 3,352 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 3,352 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 323 Andover St STE 2, Wilmington, MA 01887
Based in Haverhill, 10 mi away
62/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 449 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 449 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 12 Bond St, Haverhill, MA 01835
Based in North Andover, 13 mi away
62/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 562 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 562 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3 Johnson St, North Andover, MA 01845
Based in Woburn, 21 mi away
62/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 3,169 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 3,169 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9 N Maple St, Woburn, MA 01801
Based in Fitchburg, 16 mi away
62/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 1,275 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,275 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 35 Lomar Park Dr, Pepperell, MA 01463
Based in Londonderry, 7 mi away
62/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 433 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 433 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 39 Rockingham Rd, Londonderry, NH 03053
Based in Acton, 23 mi away
62/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 3,978 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 3,978 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1220 Liberty Square Rd, Boxborough, MA 01719
Based in Nashua, 10 mi away
61/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 348 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 348 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 230 Amherst St Unit 103, Nashua, NH 03063
Based in Billerica, 14 mi away
61/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 476 Google reviews, listed on Google as “Heating contractor”.
- 5.0★ from 476 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 98 Billerica Ave B, North Billerica, MA 01862
Based in Wakefield, 24 mi away
61/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 3,912 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 3,912 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 78 Foundry St, Wakefield, MA 01880
Based in Chelmsford, 14 mi away
61/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 443 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 443 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 80 Brick Kiln Rd, Chelmsford, MA 01824
Based in Derry, 5 mi away
61/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 176 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 176 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 71 Birch St Suite A, Derry, NH 03038
Based in Milford, 20 mi away
61/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 1,832 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,832 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 96 Old Wilton Rd #1, Milford, NH 03055
Based in Chester, 12 mi away
61/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 263 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 263 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 261 N Pond Rd, Chester, NH 03036
Based in Methuen, 9 mi away
61/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 313 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 313 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1 Toby St Unit 1, Methuen, MA 01844
Based in Bedford, 14 mi away
61/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.8★ from 683 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 683 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 45 S River Rd, Bedford, NH 03110
Based in Manchester, 15 mi away
61/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 454 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 454 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 326 Lincoln St, Manchester, NH 03103
Based in Nashua, 9 mi away
60/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 5,079 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 5,079 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat–Sun closed
- Address
- 51 Lake St, Nashua, NH 03060
Based in Haverhill, 12 mi away
60/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.7★ from 545 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 545 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 72 S Kimball St, Haverhill, MA 01835
Based in Chelmsford, 11 mi away
60/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 183 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 183 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
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 733 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 |
|---|---|---|
| Ayotte Plumbing Heating and Air Conditioning | 4.5★ (102) | 12 mi |
| Bolla Electrical & HVAC Services | 5.0★ (2) | 11 mi |
| Buonagurio HVAC | 5.0★ (2) | 8 mi |
| Burlington Plumbing & Heating | 3.0★ (2) | 12 mi |
| Climate Design Systems, LLC | 4.3★ (89) | 7 mi |
| Daniel Doore Plumbing& Heating | 3.0★ (2) | 11 mi |
| Fuel NRG | 4.5★ (94) | 11 mi |
| Harley Weymouth Plumbing & Heating | 5.0★ (2) | 6 mi |
| Home Service Doctors Plumbing & HVAC | 4.7★ (56) | 10 mi |
| Hunter & Sons AC Heating & Cooling | 4.8★ (71) | 12 mi |
| JLEMOS HVAC | 5.0★ (2) | 10 mi |
| Mikey Pipes Plumbing & Heating LLC | 5.0★ (2) | 5 mi |
| Purple HVAC | 5.0★ (2) | 9 mi |
| Reliable Refrigeration Inc | 5.0★ (2) | 11 mi |
| Revise Heating and Cooling | 5.0★ (2) | 12 mi |
| Robert A Sammataro Plumbing & Heating | 5.0★ (1) | In Windham |
| Spencer Deal Heating Services LLC | 4.0★ (2) | 10 mi |
| Suspended Profile for Non Payment of Services - JP HVAC Services | 3.0★ (2) | 10 mi |
| Tyngsboro Plumbing & Heating | 5.0★ (2) | 11 mi |
| Valerio Air Systems Inc | 3.0★ (2) | 8 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 |
When to hire an HVAC contractor in New Hampshire
In New Hampshire, 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 733 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, NH is Heritage Home Service with a CR Score of 65/100. It has 4.8★ from 7,956 Google reviews. It is open 24/7. MillTown Plumbing, Heating, Cooling and Electrical (#2) and Walley's Heating & Air (#3) follow. We ranked 733 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Windham?
ContractorsRanked ranks 733 HVAC contractors serving Windham, NH. 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?
213 ranked HVAC contractors in Windham post 24/7 hours. The highest-ranked are Heritage Home Service (#1), MillTown Plumbing, Heating, Cooling and Electrical (#2) and Walley's Heating & Air (#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?
363 of 733 ranked HVAC contractors post Saturday hours and 263 post Sunday hours. The highest-ranked open Saturdays are Heritage Home Service (#1), MillTown Plumbing, Heating, Cooling and Electrical (#2) and Walley's Heating & Air (#3). Posted hours are office hours; crews may book weekend jobs separately.
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 733 rated HVAC contractors in Windham is 4.9★, with a median of 17 reviews. Heritage Home Service has the most, 7,956 reviews, and ranks #1. 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 New Hampshire, 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 does ContractorsRanked rank HVAC contractors?
Each HVAC contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Windham
- October 2026: CR Scores recalculated for 733 hvac contractors serving Windham.
- October 2026: 9 duplicate listings merged.
More HVAC contractors and Windham pages
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Other trades in Windham
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- Kitchen remodelers in Windham391 ranked
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- Tile installers in Windham40 ranked
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- Concrete contractors in Windham121 ranked
- Fence contractors in Windham110 ranked
- Deck builders in Windham214 ranked
- Siding contractors in Windham476 ranked
- Window installers in Windham386 ranked
- Gutter installers in Windham137 ranked
- Insulation contractors in Windham72 ranked
- Solar installers in Windham135 ranked
- Garage door repair companies in Windham75 ranked
- Foundation repair companies in Windham166 ranked
- Tree services in Windham251 ranked
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- Water damage restoration companies in Windham379 ranked
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