63/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 607 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 607 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1750 55th St #D, Boulder, CO 80301
Best HVAC Contractors in Boulder, CO (2026)
549 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Boulder: Meyers Heating & Air Conditioning, CR Score 63/100; 4.8★ from 607 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Mesa Plumbing, Heating and Cooling, posts 24/7 hours; ranked #2 of 549.
- 31
Most-reviewed: Brothers Plumbing, Heating, and Electric - Denver, 8,479 Google reviews at 4.7★, the most of 549 ranked; ranked #31.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
549 Boulder HVAC contractors are ranked here by CR Score, from ten published factors. 205 are open 24/7, 364 open Saturdays and 291 open Sundays, based on posted hours. The median Google rating is 4.8★ across 549 rated businesses.
Top 10 HVAC contractors in Boulder at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Meyers Heating & Air Conditioning | 63 | 4.8★ (607) | Boulder | 24/7 | Overall |
| 2 | Mesa Plumbing, Heating and Cooling | 63 | 4.7★ (731) | Boulder | 24/7 | Emergencies |
| 3 | Cooper Heating & Cooling | 63 | 4.8★ (4,647) | Broomfield, 12 mi away | 24/7 | — |
| 4 | M and M Heating, Cooling, Plumbing and Electrical | 63 | 4.9★ (3,075) | Longmont, 13 mi away | 24/7 | — |
| 5 | Canyon Plumbing & Heating, Inc | 62 | 4.8★ (268) | Boulder | 24/7 | — |
| 6 | Jim Needham Heating Cooling Plumbing and Drain | 62 | 4.9★ (5,597) | Thornton, 19 mi away | 24/7 | — |
| 7 | Welzig Heating, Air, Plumbing & Electric | 62 | 4.9★ (1,269) | Longmont, 13 mi away | 24/7 | — |
| 8 | Jones Brothers Plumbing & HVAC | 61 | 4.9★ (78) | Boulder | 24/7 | — |
| 9 | Fix-it 24/7 Plumbing, Heating, Air & Electric | 61 | 4.7★ (4,159) | Golden, 17 mi away | 24/7 | — |
| 10 | PureComfort HVAC Repair | 61 | 4.9★ (74) | Boulder | 24/7 | — |
The 549 best HVAC contractors in Boulder, 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 Boulder
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.7★ from 731 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 731 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1740 38th St, Boulder, CO 80301
Based in Broomfield, 12 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 4,647 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 4,647 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11780 Colmans Way, Broomfield, CO 80020
Based in Longmont, 13 mi away
63/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 3,075 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 3,075 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 110 S Bowen Cir, Longmont, CO 80501
Based in Boulder
62/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 268 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 268 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4700 Sterling Dr Ste G, Boulder, CO 80301
Based in Thornton, 19 mi away
62/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 5,597 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 5,597 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8700 Grant St STE 300, Thornton, CO 80229
Based in Longmont, 13 mi away
62/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 1,269 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,269 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1831 Boston Ave, Longmont, CO 80501
Based in Boulder
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 78 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 78 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3600 Table Mesa Dr, Boulder, CO 80305
Based in Golden, 17 mi away
61/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.7★ from 4,159 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 4,159 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 16360 Table Mountain Pkwy, Golden, CO 80403
Based in Boulder
61/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 74 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 74 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 136C 2nd Ave, Niwot, CO 80544
Based in Boulder
61/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 82 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 82 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1035 Pearl St Suite 320B, Boulder, CO 80302
Based in Arvada, 18 mi away
61/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 1,917 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,917 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5980 W 59th Ave, Arvada, CO 80003
Based in Boulder
61/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.8★ from 72 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 72 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 272 Arapahoe Ave, Boulder, CO 80302
Based in Boulder
60/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.8★ from 64 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 64 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2833 28th St, Boulder, CO 80301
Based in Boulder
60/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 65 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 65 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2005 Pearl St, Boulder, CO 80302
Based in Westminster, 13 mi away
60/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 1,041 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 1,041 Google reviews
- Hours
- Mon–Fri 6 AM–6 PM · Sat 7 AM–4 PM · Sun 9 AM–2 PM
- Address
- 10835 N Dover St #100, Westminster, CO 80021
Based in Louisville, 9 mi away
60/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 4,069 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 4,069 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 8 AM–4 PM · Sun closed
- Address
- 413 S Arthur Ave, Louisville, CO 80027
Based in Westminster, 15 mi away
60/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.7★ from 1,928 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 1,928 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9050 Marshall Ct, Westminster, CO 80031
Based in Longmont, 14 mi away
60/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.8★ from 865 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 865 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 525 3rd Ave, Longmont, CO 80504
#20 Omni HVAC Repair
Based in Boulder
60/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 55 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 55 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3970 Broadway, Boulder, CO 80304
Based in Wheat Ridge, 19 mi away
60/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 1,352 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,352 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4892 Marshall St, Wheat Ridge, CO 80033
Based in Thornton, 17 mi away
60/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 893 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 893 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 12295 Pennsylvania St #8b, Thornton, CO 80241
Based in Denver, 22 mi away
60/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.8★ from 3,635 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 3,635 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4217 Delaware St, Denver, CO 80216
Based in Westminster, 16 mi away
60/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.7★ from 1,623 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 1,623 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1020 W 124th Ave #700, Westminster, CO 80234
Based in Longmont, 16 mi away
60/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.8★ from 1,093 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,093 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1740 Skyway Dr UNIT H, Longmont, CO 80504
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 549 ranked HVAC contractors here; the rest are on their profiles.
Also serving Boulder
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.
How much do HVAC contractors cost in Boulder?
National price ranges in USD, not adjusted for Boulder. 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 Colorado
In Colorado, 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 Boulder HVAC contractors
We scored 549 Boulder 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 Boulder 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 Boulder: frequently asked questions
Who is the best HVAC contractor in Boulder?
By CR Score, the highest-ranked HVAC contractor in Boulder, CO is Meyers Heating & Air Conditioning with a CR Score of 63/100. It has 4.8★ from 607 Google reviews. It is open 24/7. Mesa Plumbing, Heating and Cooling (#2) and Cooper Heating & Cooling (#3) follow. We ranked 549 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Boulder?
ContractorsRanked ranks 549 HVAC contractors serving Boulder, CO. 15 of them are based in Boulder; 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 Boulder are open 24/7?
205 ranked HVAC contractors in Boulder post 24/7 hours. The highest-ranked are Meyers Heating & Air Conditioning (#1), Mesa Plumbing, Heating and Cooling (#2) and Cooper Heating & Cooling (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Boulder work on weekends?
364 of 549 ranked HVAC contractors post Saturday hours and 291 post Sunday hours. The highest-ranked open Saturdays are Meyers Heating & Air Conditioning (#1), Mesa Plumbing, Heating and Cooling (#2) and Cooper Heating & Cooling (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does ac replacement cost in Boulder?
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 Boulder. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Boulder HVAC contractors have?
The median Google rating among 549 rated HVAC contractors in Boulder is 4.8★, with a median of 37 reviews. Brothers Plumbing, Heating, and Electric - Denver has the most, 8,479 reviews, and ranks #31. 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 Boulder?
In Colorado, 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 Boulder
- October 2026: CR Scores recalculated for 549 hvac contractors serving Boulder.
- October 2026: 2 duplicate listings merged.
More HVAC contractors and Boulder pages
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