64/100CR Score
Ranked #1 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
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3 37th Ave, San Mateo, CA 94403
Best HVAC Contractors in San Mateo, CA (2026)
463 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in San Mateo: Fuse Service, CR Score 64/100; 4.9★ from 264 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Fuse Service, posts 24/7 hours; ranked #2 of 463.
- 8
Most-reviewed: Albert Nahman Plumbing, Heating, and Cooling, 3,311 Google reviews at 4.7★, the most of 463 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
463 San Mateo HVAC contractors are ranked here by CR Score, from ten published factors. 119 are open 24/7, 309 open Saturdays and 252 open Sundays, based on posted hours. The median Google rating is 4.9★ across 463 rated businesses.
Top 10 HVAC contractors in San Mateo at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Fuse Service | 64 | 4.9★ (264) | San Mateo | 24/7 | Overall |
| 2 | Fuse Service | 63 | 4.9★ (217) | San Mateo | 24/7 | Emergencies |
| 3 | Heise's Plumbing | 63 | 4.9★ (1,454) | San Francisco, 13 mi away | 24/7 | — |
| 4 | Cabrillo Plumbing, Heating & Air | 62 | 4.9★ (966) | San Francisco, 13 mi away | 24/7 | — |
| 5 | Magic Plumbing Heating & Cooling | 62 | 4.9★ (1,876) | San Francisco, 12 mi away | Sat · Sun · Evenings | — |
| 6 | Fuse service | 62 | 5.0★ (444) | Palo Alto, 12 mi away | 24/7 | — |
| 7 | Cabrillo Plumbing, Heating & Air | 62 | 5.0★ (208) | Menlo Park, 9 mi away | 24/7 | — |
| 8 | Albert Nahman Plumbing, Heating, and Cooling | 61 | 4.7★ (3,311) | Berkeley, 20 mi away | 24/7 | Most reviews |
| 9 | Bell Brothers Plumbing Heating & Air - Hayward | 61 | 4.7★ (863) | Hayward, 12 mi away | 24/7 | — |
| 10 | Heating And Air Experts - Affordable HVAC Contractor in Fremont, California | 61 | 5.0★ (761) | Fremont, 20 mi away | 24/7 | — |
The 463 best HVAC contractors in San Mateo, 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.
#2 Fuse Service
Based in San Mateo
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 217 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 217 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3 37th Ave W, San Mateo, CA 94403
Based in San Francisco, 13 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 1,454 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,454 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 260 Ocean Ave, San Francisco, CA 94112
Based in San Francisco, 13 mi away
62/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 966 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 966 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 78 Dorman Ave, San Francisco, CA 94124
Based in San Francisco, 12 mi away
62/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 1,876 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,876 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 1455 Bancroft Ave, San Francisco, CA 94124
#6 Fuse service
Based in Palo Alto, 12 mi away
62/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 444 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 444 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 349 Everett Ave, Palo Alto, CA 94301
Based in Menlo Park, 9 mi away
62/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 208 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 208 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3511 Haven Ave, Menlo Park, CA 94025
Based in Berkeley, 20 mi away
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.7★ from 3,311 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 3,311 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3333 Martin Luther King Jr Way, Berkeley, CA 94703
Based in Hayward, 12 mi away
61/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.7★ from 863 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 863 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3266 Investment Blvd, Hayward, CA 94545
Based in Fremont, 20 mi away
61/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 761 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 761 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4991 Seneca Park Loop, Fremont, CA 94538
Based in South San Francisco, 7 mi away
61/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 369 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 369 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 317 Corey Way, South San Francisco, CA 94080
Based in San Francisco, 13 mi away
61/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 286 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 286 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 121 Quint St STE 5E, San Francisco, CA 94124
Based in Hayward, 13 mi away
61/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.5★ from 1,252 Google reviews, listed on Google as “HVAC contractor”.
- 4.5★ from 1,252 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 24800 Industrial Blvd, Hayward, CA 94545
Based in Pleasanton, 24 mi away
60/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.8★ from 2,337 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 2,337 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7020 Commerce Dr, Pleasanton, CA 94588
Based in San Ramon, 24 mi away
60/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 1,017 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 1,017 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 23 Beta Ct suite f, San Ramon, CA 94583
Based in San Mateo
60/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.5★ from 86 Google reviews, listed on Google as “HVAC contractor”.
- 4.5★ from 86 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 63 Bovet Rd #160, San Mateo, CA 94402
Based in Fremont, 21 mi away
60/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 723 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 723 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4432 Enterprise St suite a, Fremont, CA 94538
Based in Hayward, 12 mi away
60/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.6★ from 474 Google reviews, listed on Google as “HVAC contractor”.
- 4.6★ from 474 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2616 Barrington Ct, Hayward, CA 94545
Based in San Mateo
60/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 144 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 144 Google reviews
- Hours
- Mon–Tue 6 AM–3 PM · Wed–Thu 6 AM–5 PM · Fri 6 AM–3 PM · Sat 6 AM–4 PM · Sun closed
- Address
- 1650 S Amphlett Blvd UNIT 114, San Mateo, CA 94402
#20 Belmont HVAC Pro
Based in Belmont, 4 mi away
60/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.7★ from 75 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 75 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2820 Hallmark Dr, Belmont, CA 94002
#21 Nur HVAC
Based in Burlingame, 2 mi away
60/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 71 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 71 Google reviews
- Hours
- Mon–Fri 8 AM–8 PM · Sat–Sun 8 AM–6 PM
- Address
- 381 Beach Rd, Burlingame, CA 94010
Based in Hayward, 12 mi away
60/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 162 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 162 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1930 W Winton Ave # 4, Hayward, CA 94545
#23 Electric Air
Based in Redwood City, 9 mi away
60/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 72 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 72 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2684 Middlefield Rd Unit D, Redwood City, CA 94063
Based in Hayward, 13 mi away
60/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.5★ from 700 Google reviews, listed on Google as “HVAC contractor”.
- 4.5★ from 700 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3334 Arden Rd, Hayward, CA 94545
Based in Hayward, 13 mi away
60/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 172 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 172 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 27343 Industrial Blvd Suite H, Hayward, CA 94545
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 463 ranked HVAC contractors here; the rest are on their profiles.
Also serving San Mateo
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 |
|---|---|---|
| Automatic Control Engineering | 4.5★ (2) | 13 mi |
| Bayside Heating & Air Conditioning, Inc. | 5.0★ (2) | In San Mateo |
| C F Archibald Paving | 5.0★ (2) | 9 mi |
| California HVAC | 4.9★ (59) | 16 mi |
| Carney Refrigeration inc. | 5.0★ (1) | In San Mateo |
| ChillMasters HVAC | In San Mateo | |
| Commercial Filter Services | 3.0★ (2) | 12 mi |
| Cosmos Electric Co | 3.0★ (2) | 11 mi |
| Excellent Repair | 4.8★ (43) | 13 mi |
| Furnace Man | 5.0★ (2) | 9 mi |
| Hayward duct cleaning & dryer solution | 5.0★ (2) | 12 mi |
| Heating & Air Conditioning | 5.0★ (2) | 5 mi |
| J W Mc Clenahan Co | 5.0★ (4) | In San Mateo |
| Janal Heating & Air Conditioning | 5.0★ (2) | 9 mi |
| Panda Heating & Cooling | 3.5★ (2) | 14 mi |
| Professional HVAC Contractor San Mateo | 5.0★ (38) | In San Mateo |
| Ron Williams Plumbing & Heating | 4.0★ (2) | 7 mi |
| San Francisco Expert Heating and Air | 4.9★ (69) | 17 mi |
| The Clean Sky HVAC and Appliance Repair | 5.0★ (37) | 15 mi |
| Wing Cary Plumbing & Fire Protection | In San Mateo |
How much do HVAC contractors cost in San Mateo?
National price ranges in USD, not adjusted for San Mateo. 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 California
In California, Contractors State License Board (CSLB) licenses C-20 Warm-Air Heating, Ventilating and Air-Conditioning contractor license.
Jobs of $1,000 or more in labor and materials (from January 1, 2025).
- Search the business name or license number on the Contractors State License Board (CSLB) 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 California
California's HVAC demand peaks during summer heat waves and the first cold snaps. Spring and fall are the easiest times to book maintenance.
How we ranked San Mateo HVAC contractors
We scored 463 San Mateo 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 San Mateo 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 San Mateo: frequently asked questions
Who is the best HVAC contractor in San Mateo?
By CR Score, the highest-ranked HVAC contractor in San Mateo, CA is Fuse Service with a CR Score of 64/100. It has 4.9★ from 264 Google reviews. It is open 24/7. Fuse Service (#2) and Heise's Plumbing (#3) follow. We ranked 463 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in San Mateo?
ContractorsRanked ranks 463 HVAC contractors serving San Mateo, CA. 4 of them are based in San Mateo; 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 San Mateo are open 24/7?
119 ranked HVAC contractors in San Mateo post 24/7 hours. The highest-ranked are Fuse Service (#1), Fuse Service (#2) and Heise's Plumbing (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in San Mateo work on weekends?
309 of 463 ranked HVAC contractors post Saturday hours and 252 post Sunday hours. The highest-ranked open Saturdays are Fuse Service (#1), Fuse Service (#2) and Heise's Plumbing (#3). Posted hours are office hours; crews may book weekend jobs separately.
How do I check an HVAC contractor's license in California?
In California, Contractors State License Board (CSLB) handles licensing and covers C-20 Warm-Air Heating, Ventilating and Air-Conditioning contractor license. Search the business or license number at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx. Jobs of $1,000 or more in labor and materials (from January 1, 2025).
How much does ac replacement cost in San Mateo?
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 San Mateo. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do San Mateo HVAC contractors have?
The median Google rating among 463 rated HVAC contractors in San Mateo is 4.9★, with a median of 17 reviews. Albert Nahman Plumbing, Heating, and Cooling has the most, 3,311 reviews, and ranks #8. 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 San Mateo?
California's HVAC demand peaks during summer heat waves and the first cold snaps. Spring and fall are the easiest times to book maintenance.
Update log for San Mateo
- October 2026: CR Scores recalculated for 463 hvac contractors serving San Mateo.
- October 2026: 3 duplicate listings merged.
More HVAC contractors and San Mateo pages
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