429 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Hercules: Service Champions, CR Score 94/100; 4.9★ from 5,220 Google reviews; open 24/7.
Best for emergencies (open 24/7): Hometown Heating and Air Conditioning, posts 24/7 hours; ranked #2 of 429.
Most-reviewed: Albert Nahman Plumbing, Heating, and Cooling, 3,311 Google reviews at 4.7★, the most of 429 ranked after Service Champions; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
429 Hercules HVAC contractors are ranked here by CR Score, from 8 published factors. 98 are open 24/7, 239 open Saturdays and 186 open Sundays, based on posted hours. The median Google rating is 4.9★ across 429 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Service Champions | 94 | 4.9★ (5,220) | Martinez, 11 mi away | 24/7 | Overall |
| 2 | Hometown Heating and Air Conditioning | 92 | 4.9★ (2,463) | Concord, 13 mi away | 24/7 | Emergencies |
| 3 | Albert Nahman Plumbing, Heating, and Cooling | 91 | 4.7★ (3,311) | Berkeley, 12 mi away | 24/7 | Most reviews |
| 4 | Perfect Star Heating, Cooling, & Electrical | 90 | 4.9★ (1,255) | Concord, 17 mi away | 24/7 | — |
| 5 | Chill Heating and Cooling | 90 | 5.0★ (481) | Walnut Creek, 14 mi away | 24/7 | — |
| 6 | Ongaro & Sons | 89 | 4.9★ (762) | San Anselmo, 15 mi away | 24/7 | — |
| 7 | Freschi Service Experts | 89 | 4.8★ (1,046) | Concord, 14 mi away | 24/7 | — |
| 8 | Bellows Plumbing, Heating, Cooling & Electrical | 89 | 4.9★ (480) | Novato, 14 mi away | 24/7 | — |
| 9 | Perfect Star Heating, Cooling, & Electrical | 89 | 4.9★ (2,331) | Antioch, 24 mi away | 24/7 | — |
| 10 | Chill Heating and Cooling | 89 | 5.0★ (1,017) | San Ramon, 23 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and review volume: 4.9★ from 5,220 Google reviews, the most Google reviews on this list (5,220).
Based in Concord, 13 mi away
Ranked #2 because of its Google rating and availability: 4.9★ from 2,463 Google reviews, open 24/7.
Based in Berkeley, 12 mi away
Ranked #3 because of its Google rating and availability: 4.7★ from 3,311 Google reviews, open 24/7.
Based in Concord, 17 mi away
Ranked #4 because of its Google rating and availability: 4.9★ from 1,255 Google reviews, open 24/7.
Based in Walnut Creek, 14 mi away
Ranked #5 because of its Google rating and availability: 5.0★ from 481 Google reviews, open 24/7.
Based in San Anselmo, 15 mi away
Ranked #6 because of its Google rating and availability: 4.9★ from 762 Google reviews, open 24/7.
Based in Concord, 14 mi away
Ranked #7 because of its Google rating and availability: 4.8★ from 1,046 Google reviews, open 24/7.
Based in Novato, 14 mi away
Ranked #8 because of its Google rating and availability: 4.9★ from 480 Google reviews, open 24/7.
Based in Antioch, 24 mi away
Ranked #9 because of its Google rating and availability: 4.9★ from 2,331 Google reviews, open 24/7.
Based in San Ramon, 23 mi away
Ranked #10 because of its Google rating and availability: 5.0★ from 1,017 Google reviews, open 24/7.
Based in San Francisco, 22 mi away
Ranked #11 because of its Google rating and availability: 4.9★ from 1,454 Google reviews, open 24/7.
Based in Concord, 13 mi away
Ranked #12 because of its Google rating and availability: 4.9★ from 324 Google reviews, open 24/7.
Based in San Francisco, 20 mi away
Ranked #13 because of its Google rating and availability: 4.9★ from 966 Google reviews, open 24/7.
Based in Sausalito, 15 mi away
Ranked #14 because of its Google rating and availability: 5.0★ from 211 Google reviews, open 24/7.
Based in Pleasant Hill, 14 mi away
Ranked #15 because of its Google rating and availability: 4.8★ from 370 Google reviews, open 24/7.
Based in Pittsburg, 22 mi away
Ranked #16 because of its Google rating and availability: 4.9★ from 851 Google reviews, open 24/7.
Based in Richmond, 8 mi away
Ranked #17 because of its Google rating and availability: 4.9★ from 94 Google reviews, open 24/7.
Based in Benicia, 9 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 1,142 Google reviews, listed on Google as “HVAC contractor”.
Based in Danville, 22 mi away
Ranked #19 because of its Google rating and availability: 4.9★ from 602 Google reviews, open 24/7.
Based in Vallejo, 7 mi away
Ranked #20 because of its Google rating and availability: 5.0★ from 38 Google reviews, open 24/7.
Based in San Francisco, 20 mi away
Ranked #21 because of its Google rating and availability: 4.9★ from 286 Google reviews, open 24/7.
Based in Berkeley, 5 mi away
Ranked #22 because of its Google rating and availability: 5.0★ from 27 Google reviews, open 24/7.
Based in Alamo, 16 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 2,473 Google reviews, listed on Google as “HVAC contractor”.
Based in Concord, 16 mi away
Ranked #24 because of its Google rating and availability: 4.9★ from 109 Google reviews, open 24/7.
Based in San Francisco, 21 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 1,876 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 429 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 |
|---|---|---|
| All Bay HVAC & Construction Co | 3.5★ (2) | 13 mi |
| ARASTEK Heating and Cooling , HVAC , Air Conditioning | 5.0★ (2) | 12 mi |
| Bay Air Systems | 5.0★ (2) | 13 mi |
| Brothers Energy | 5.0★ (2) | 12 mi |
| California HVAC | 4.9★ (59) | 17 mi |
| CLASSIC Heating And Air Conditioning | 5.0★ (2) | 14 mi |
| Climate Source HVAC/R LLC | 4.9★ (29) | 14 mi |
| Creative Comfort Systems | 5.0★ (2) | 7 mi |
| EHC HEATING&COOLING | 4.0★ (4) | In Hercules |
| Estes Refrigeration, Inc. | 4.0★ (10) | 7 mi |
| Five Or Free Electrical Heating & Air Solutions | 4.8★ (219) | 13 mi |
| Fuse service | 5.0★ (29) | 21 mi |
| Inner Sunset Top Heating and Air | 5.0★ (30) | 20 mi |
| North Cal Heating And Air | 5.0★ (2) | 12 mi |
| North Star Heating & Cooling | 5.0★ (2) | 12 mi |
| Palma Super Cold HVAC | 5.0★ (8) | 10 mi |
| Premium Express Heating and Air Conditioning | 5.0★ (2) | 13 mi |
| Redfoxheating&cooling | 3.0★ (2) | 10 mi |
| Sears Heating and Air Conditioning | 3.0★ (2) | 2 mi |
| Vigil Mechanical, Inc | 5.0★ (2) | 10 mi |
National price ranges in USD, not adjusted for Hercules. 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 429 Hercules HVAC contractors on 8 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. Unknown factors are left out of the score, 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 Hercules data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |