410 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in South San Francisco: Heise's Plumbing, CR Score 65/100; 4.9★ from 1,454 Google reviews; open 24/7.
Best for emergencies (open 24/7): Cabrillo Plumbing, Heating & Air, posts 24/7 hours; ranked #2 of 410.
Most-reviewed: Albert Nahman Plumbing, Heating, and Cooling, 3,311 Google reviews at 4.7★, the most of 410 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
410 South San Francisco HVAC contractors are ranked here by CR Score, from ten published factors. 99 are open 24/7, 267 open Saturdays and 214 open Sundays, based on posted hours. The median Google rating is 4.9★ across 410 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Heise's Plumbing | 65 | 4.9★ (1,454) | San Francisco, 5 mi away | 24/7 | Overall |
| 2 | Cabrillo Plumbing, Heating & Air | 64 | 4.9★ (966) | San Francisco, 6 mi away | 24/7 | Emergencies |
| 3 | Magic Plumbing Heating & Cooling | 64 | 4.9★ (1,876) | San Francisco, 5 mi away | Sat · Sun · Evenings | — |
| 4 | Sugar Bear Home Services | 63 | 4.9★ (369) | South San Francisco | 24/7 | — |
| 5 | Albert Nahman Plumbing, Heating, and Cooling | 63 | 4.7★ (3,311) | Berkeley, 15 mi away | 24/7 | Most reviews |
| 6 | Arch Plumbing Inc. | 62 | 4.9★ (286) | San Francisco, 6 mi away | 24/7 | — |
| 7 | Fuse Service | 61 | 4.9★ (264) | San Mateo, 10 mi away | 24/7 | — |
| 8 | Around The Clock HVAC | 61 | 5.0★ (207) | San Francisco, 5 mi away | Sat · Sun · Evenings | — |
| 9 | Bell Brothers Plumbing Heating & Air - Hayward | 60 | 4.7★ (863) | Hayward, 16 mi away | 24/7 | — |
| 10 | Chill Heating and Cooling | 60 | 5.0★ (1,017) | San Ramon, 25 mi away | 24/7 | — |
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.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 1,454 Google reviews, listed on Google as “HVAC contractor”.
Based in San Francisco, 6 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 966 Google reviews, listed on Google as “HVAC contractor”.
Based in San Francisco, 5 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 1,876 Google reviews, listed on Google as “HVAC contractor”.
Based in South San Francisco
Ranked #4 because of its Google rating and trade focus: 4.9★ from 369 Google reviews, listed on Google as “HVAC contractor”.
Based in Berkeley, 15 mi away
Ranked #5 because of its Google rating and trade focus: 4.7★ from 3,311 Google reviews, listed on Google as “HVAC contractor”.
Based in San Francisco, 6 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 286 Google reviews, listed on Google as “HVAC contractor”.
Based in San Mateo, 10 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 264 Google reviews, listed on Google as “HVAC contractor”.
Based in San Francisco, 5 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 207 Google reviews, listed on Google as “HVAC contractor”.
Based in Hayward, 16 mi away
Ranked #9 because of its Google rating and trade focus: 4.7★ from 863 Google reviews, listed on Google as “HVAC contractor”.
Based in San Ramon, 25 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 1,017 Google reviews, listed on Google as “HVAC contractor”.
Based in Palo Alto, 20 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 444 Google reviews, listed on Google as “HVAC contractor”.
Based in Sausalito, 15 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 211 Google reviews, listed on Google as “HVAC contractor”.
Based in San Francisco, 8 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 333 Google reviews, listed on Google as “HVAC contractor”.
Based in Hayward, 16 mi away
Ranked #14 because of its Google rating and trade focus: 4.5★ from 1,252 Google reviews, listed on Google as “HVAC contractor”.
Based in Menlo Park, 17 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 208 Google reviews, listed on Google as “HVAC contractor”.
Based in San Anselmo, 24 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 762 Google reviews, listed on Google as “HVAC contractor”.
Based in Hayward, 15 mi away
Ranked #17 because of its Google rating and trade focus: 4.6★ from 474 Google reviews, listed on Google as “HVAC contractor”.
Based in Hayward, 15 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 162 Google reviews, listed on Google as “HVAC contractor”.
Based in San Francisco, 10 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 69 Google reviews, listed on Google as “HVAC contractor”.
Based in Hayward, 17 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 172 Google reviews, listed on Google as “HVAC contractor”.
Based in San Lorenzo, 16 mi away
Ranked #21 because of its Google rating and trade focus: 4.7★ from 265 Google reviews, listed on Google as “HVAC contractor”.
Based in Hayward, 17 mi away
Ranked #22 because of its Google rating and trade focus: 4.5★ from 700 Google reviews, listed on Google as “HVAC contractor”.
Based in Burlingame, 6 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 71 Google reviews, listed on Google as “HVAC contractor”.
Based in Pacifica, 6 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “HVAC contractor”.
Based in Daly City, 4 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 58 Google reviews, listed on Google as “HVAC contractor”.
#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 410 ranked HVAC contractors here; the rest are on their profiles.
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 |
|---|---|---|
| 1st Heating And Cooling East Palo Alto | 5.0★ (46) | 19 mi |
| Air Serv Corporation | 3.5★ (4) | In South San Francisco |
| Bayhill Heat & Air. | 5.0★ (1) | In South San Francisco |
| Bayside Heating & Air Conditioning, Inc. | 5.0★ (2) | 8 mi |
| BEST CHOICE HVAC, INC | 5.0★ (4) | 5 mi |
| California HVAC | 4.9★ (59) | 13 mi |
| Central Refrigeration Co | 4.2★ (5) | 2 mi |
| Clean Air Systems Inc | In South San Francisco | |
| Comfort Air Mechanical Systems | 3.5★ (2) | 12 mi |
| Cosmos Electric Co | 3.0★ (2) | 5 mi |
| dpw, inc. | In South San Francisco | |
| Eco Systems Heating & Air Conditioning | 4.8★ (138) | 24 mi |
| Finest Heating & air | 4.9★ (87) | 21 mi |
| Five Or Free Electrical Heating & Air Solutions | 4.8★ (219) | 15 mi |
| HVAC Redwood City | 5.0★ (33) | 17 mi |
| Omega Emergency HVAC Repair South San Francisco | 5.0★ (1) | In South San Francisco |
| ON TIME HVAC SF | 4.0★ (8) | 6 mi |
| Quaweay Electric | 5.0★ (2) | 12 mi |
| VentSure HVAC Fixers | In South San Francisco | |
| Wolves Heating & Air Conditioning | In South San Francisco |
National price ranges in USD, not adjusted for South San Francisco. 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 |
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).
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
California's HVAC demand peaks during summer heat waves and the first cold snaps. Spring and fall are the easiest times to book maintenance.
We scored 410 South San Francisco 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 South San Francisco 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 |