66/100CR Score
Ranked #1 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
Best HVAC Contractors in Lexington, MA (2026)
1,264 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Lexington: Central Cooling & Heating, CR Score 66/100; 4.9★ from 3,169 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): 128 Plumbing, Heating, Cooling & Electric, posts 24/7 hours; ranked #2 of 1,264.
- 4
Most-reviewed: Sila Heating, Air Conditioning, Plumbing & Electrical, 4,377 Google reviews at 4.9★, the most of 1,264 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,264 Lexington HVAC contractors are ranked here by CR Score, from ten published factors. 391 are open 24/7, 712 open Saturdays and 532 open Sundays, based on posted hours. The median Google rating is 4.8★ across 1,264 rated businesses.
Top 10 HVAC contractors in Lexington at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Central Cooling & Heating | 66 | 4.9★ (3,169) | Woburn, 6 mi away | 24/7 | Overall |
| 2 | 128 Plumbing, Heating, Cooling & Electric | 66 | 4.9★ (3,912) | Wakefield, 9 mi away | 24/7 | Emergencies |
| 3 | Winters Home Services | 65 | 4.8★ (2,862) | Watertown, 6 mi away | 24/7 | — |
| 4 | Sila Heating, Air Conditioning, Plumbing & Electrical | 65 | 4.9★ (4,377) | Stoneham, 6 mi away | Sat · Sun · Evenings | Most reviews |
| 5 | Akian Plumbing, Heating, Cooling & Electric | 64 | 4.8★ (1,625) | Watertown, 6 mi away | 24/7 | — |
| 6 | Heritage Home Service | 64 | 4.8★ (3,352) | Wilmington, 11 mi away | 24/7 | — |
| 7 | Papalia Home Services | 64 | 4.9★ (3,978) | Acton, 15 mi away | 24/7 | — |
| 8 | Addario's Plumbing, Heating, Cooling & Electrical Services | 63 | 4.6★ (2,076) | Wilmington, 7 mi away | 24/7 | — |
| 9 | MillTown Plumbing, Heating, Cooling and Electrical | 63 | 4.8★ (2,927) | Chelmsford, 14 mi away | 24/7 | — |
| 10 | Cooling Unlimited, Inc. | 63 | 4.8★ (741) | Reading, 8 mi away | 24/7 | — |
The 1,264 best HVAC contractors in Lexington, 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 Wakefield, 9 mi away
66/100CR ScoreRanked #2 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 Watertown, 6 mi away
65/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 2,862 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 2,862 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 108 School St, Watertown, MA 02472
Based in Stoneham, 6 mi away
65/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 4,377 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 4,377 Google reviews
- Hours
- Mon–Fri 7:30 AM–8 PM · Sat–Sun 8 AM–5 PM
- Address
- 12 Oakland Ave #4, Stoneham, MA 02180
Based in Watertown, 6 mi away
64/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 1,625 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,625 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 586 Pleasant St #4, Watertown, MA 02472
Based in Wilmington, 11 mi away
64/100CR 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 Acton, 15 mi away
64/100CR ScoreRanked #7 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 Wilmington, 7 mi away
63/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.6★ from 2,076 Google reviews, listed on Google as “HVAC contractor”.
- 4.6★ from 2,076 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1 Jewel Dr Suite 324, Wilmington, MA 01887
Based in Chelmsford, 14 mi away
63/100CR ScoreRanked #9 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 Reading, 8 mi away
63/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 741 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 741 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 565 Main St, Reading, MA 01867
Based in Danvers, 18 mi away
63/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 4,220 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 4,220 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 33 Cherry Hill Dr, Danvers, MA 01923
Based in Woburn, 7 mi away
63/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.7★ from 872 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 872 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5 Constitution Way Suite B, Woburn, MA 01801
Based in Newton, 6 mi away
63/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 389 Google reviews, listed on Google as “Heating contractor”.
- 4.9★ from 389 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 237 Riverview Ave, Auburndale, MA 02466
Based in Billerica, 11 mi away
62/100CR 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 Chelmsford, 11 mi away
62/100CR ScoreRanked #15 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 Holliston, 19 mi away
62/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.8★ from 2,950 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 2,950 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 71 Whitney St, Holliston, MA 01746
Based in Quincy, 15 mi away
62/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 1,567 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,567 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11-17 Newbury St #2, Quincy, MA 02171
Based in Somerville, 8 mi away
62/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.8★ from 451 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 451 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 165 Middlesex Ave #1057, Somerville, MA 02145
Based in Needham, 10 mi away
62/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 259 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 259 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 19 Kearney Rd, Needham, MA 02494
Based in Framingham, 16 mi away
62/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 1,322 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,322 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 82 Herbert St, Framingham, MA 01702
#21 Excel Mechanical
Based in Tewksbury, 9 mi away
62/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.8★ from 444 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.8★ from 444 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2261 Main St, Tewksbury, MA 01876
Based in Abington, 8 mi away
62/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.7★ from 483 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 483 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Billerica, 18 mi away
62/100CR ScoreRanked #23 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 Lexington
62/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 63 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 63 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1727 Massachusetts Ave, Lexington, MA 02420
Based in Peabody, 16 mi away
62/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 839 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 839 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 67 Foster St, Peabody, MA 01960
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 1,264 ranked HVAC contractors here; the rest are on their profiles.
Also serving Lexington
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 |
|---|---|---|
| A&D Sheet Metal, Inc. | 5.0★ (2) | 5 mi |
| All Seasons Home HVAC | 5.0★ (2) | 5 mi |
| ArcticAardvark Comfort | 3.0★ (2) | 6 mi |
| B & X & T HVAC | 3.0★ (2) | 5 mi |
| B J Doyle Heating & Air Conditioning | 5.0★ (2) | 7 mi |
| Colombos HVAC inc. | 3.0★ (2) | 6 mi |
| Daikin | 1.0★ (2) | 7 mi |
| Green Energy AC Heating & Plumbing Repair | 4.8★ (257) | 12 mi |
| J C Heating & Air Conditioning | 3.0★ (2) | 6 mi |
| KEN's HVAC SERVICE | 5.0★ (97) | 3 mi |
| Mc Gregor Heating & Air Conditioning | 3.0★ (2) | 4 mi |
| Monteiro Plumbing & Heating | 1.0★ (2) | 6 mi |
| N & T HVAC | 5.0★ (2) | 7 mi |
| Pann Home Services & Remodeling | 4.5★ (331) | 8 mi |
| Panza Plumbing & Heating | 3.0★ (2) | 7 mi |
| R. Hellmer Plumbing & Heating | 5.0★ (2) | 7 mi |
| R.Y. HVAC | 5.0★ (2) | 3 mi |
| Revise Inc. | 3.0★ (2) | 4 mi |
| Sweet Plumbing & Heating | In Lexington | |
| T Y B HVAC Solutions | 1.0★ (2) | 7 mi |
How much do HVAC contractors cost in Lexington?
National price ranges in USD, not adjusted for Lexington. 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 Massachusetts
In Massachusetts, 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 Lexington HVAC contractors
We scored 1,264 Lexington 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 Lexington 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 Lexington: frequently asked questions
Who is the best HVAC contractor in Lexington?
By CR Score, the highest-ranked HVAC contractor in Lexington, MA is Central Cooling & Heating with a CR Score of 66/100. It has 4.9★ from 3,169 Google reviews. It is open 24/7. 128 Plumbing, Heating, Cooling & Electric (#2) and Winters Home Services (#3) follow. We ranked 1,264 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Lexington?
ContractorsRanked ranks 1,264 HVAC contractors serving Lexington, MA. 2 of them are based in Lexington; 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 Lexington are open 24/7?
391 ranked HVAC contractors in Lexington post 24/7 hours. The highest-ranked are Central Cooling & Heating (#1), 128 Plumbing, Heating, Cooling & Electric (#2) and Winters Home Services (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Lexington work on weekends?
712 of 1,264 ranked HVAC contractors post Saturday hours and 532 post Sunday hours. The highest-ranked open Saturdays are Central Cooling & Heating (#1), 128 Plumbing, Heating, Cooling & Electric (#2) and Winters Home Services (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does ac replacement cost in Lexington?
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 Lexington. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Lexington HVAC contractors have?
The median Google rating among 1,264 rated HVAC contractors in Lexington is 4.8★, with a median of 17 reviews. Sila Heating, Air Conditioning, Plumbing & Electrical has the most, 4,377 reviews, and ranks #4. 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 Lexington?
In Massachusetts, 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 Lexington
- October 2026: CR Scores recalculated for 1,264 hvac contractors serving Lexington.
- October 2026: 11 duplicate listings merged.
More HVAC contractors and Lexington pages
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Other trades in Lexington
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- All contractors in Lexington