215 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Novato: Bellows Plumbing, Heating, Cooling & Electrical, CR Score 65/100; 4.9★ from 480 Google reviews; open 24/7.
Best for emergencies (open 24/7): Ongaro & Sons, posts 24/7 hours; ranked #2 of 215.
Most-reviewed: Albert Nahman Plumbing, Heating, and Cooling, 3,311 Google reviews at 4.7★, the most of 215 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
215 Novato HVAC contractors are ranked here by CR Score, from ten published factors. 37 are open 24/7, 113 open Saturdays and 91 open Sundays, based on posted hours. The median Google rating is 5.0★ across 215 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Bellows Plumbing, Heating, Cooling & Electrical | 65 | 4.9★ (480) | Novato | 24/7 | Overall |
| 2 | Ongaro & Sons | 64 | 4.9★ (762) | San Anselmo, 9 mi away | 24/7 | Emergencies |
| 3 | Peter Levi Plumbing, Heating, Cooling, Drains | 63 | 4.8★ (1,640) | Novato | Sat · Evenings | — |
| 4 | Ongaro & Sons | 63 | 4.9★ (538) | Petaluma, 11 mi away | 24/7 | — |
| 5 | Next Day Air & Heating | 61 | 5.0★ (499) | Cotati, 18 mi away | 24/7 | — |
| 6 | Albert Nahman Plumbing, Heating, and Cooling | 61 | 4.7★ (3,311) | Berkeley, 24 mi away | 24/7 | Most reviews |
| 7 | Ongaro & Sons | 61 | 4.9★ (1,222) | Santa Rosa, 24 mi away | 24/7 | — |
| 8 | Gene Burch Plumbing Heating & Air | 61 | 4.9★ (588) | Novato | — | — |
| 9 | KC Home Services Plumbing, Heating & AC Repair | 60 | 4.9★ (827) | Santa Rosa, 22 mi away | 24/7 | — |
| 10 | Elevated Comfort | 60 | 4.9★ (949) | Cotati, 18 mi away | Sat · Sun · Evenings | — |
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 480 Google reviews, listed on Google as “Air conditioning contractor”.
Based in San Anselmo, 9 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 762 Google reviews, listed on Google as “HVAC contractor”.
Based in Novato
Ranked #3 because of its Google rating and trade focus: 4.8★ from 1,640 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Petaluma, 11 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 538 Google reviews, listed on Google as “HVAC contractor”.
Based in Cotati, 18 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 499 Google reviews, listed on Google as “Heating contractor”.
Based in Berkeley, 24 mi away
Ranked #6 because of its Google rating and review volume: 4.7★ from 3,311 Google reviews, the most in Novato.
Based in Santa Rosa, 24 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 1,222 Google reviews, listed on Google as “HVAC contractor”.
Based in Novato
Ranked #8 because of its Google rating and trade focus: 4.9★ from 588 Google reviews, listed on Google as “HVAC contractor”.
Based in Santa Rosa, 22 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 827 Google reviews, listed on Google as “Heating contractor”.
Based in Cotati, 18 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 949 Google reviews, listed on Google as “HVAC contractor”.
Based in Sausalito, 18 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 211 Google reviews, listed on Google as “HVAC contractor”.
Based in Petaluma, 12 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 82 Google reviews, listed on Google as “HVAC contractor”.
Based in Novato
Ranked #13 because of its Google rating and trade focus: 4.9★ from 308 Google reviews, listed on Google as “HVAC contractor”.
Based in Napa, 20 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 912 Google reviews, listed on Google as “HVAC contractor”.
Based in Novato
Ranked #15 because of its Google rating and trade focus: 5.0★ from 49 Google reviews, listed on Google as “HVAC contractor”.
Based in San Rafael, 11 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 90 Google reviews, listed on Google as “HVAC contractor”.
Based in Petaluma, 10 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “HVAC contractor”.
Based in Benicia, 24 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 Novato
Ranked #19 because of its Google rating and trade focus: 4.9★ from 134 Google reviews, listed on Google as “HVAC contractor”.
Based in Novato
Ranked #20 because of its Google rating and trade focus: 5.0★ from 113 Google reviews, listed on Google as “HVAC contractor”.
Based in Richmond, 18 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 94 Google reviews, listed on Google as “HVAC contractor”.
Based in Novato
Ranked #22 because of its Google rating and trade focus: 4.8★ from 16 Google reviews, listed on Google as “HVAC contractor”.
Based in Petaluma, 8 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 240 Google reviews, listed on Google as “HVAC contractor”.
Based in Albany, 19 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 62 Google reviews, listed on Google as “HVAC contractor”.
Based in Vallejo, 17 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 38 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 215 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 |
|---|---|---|
| American Chiller Service, Inc. | 3.0★ (2) | 12 mi |
| Amy's Appliances Repair | 3.9★ (11) | 17 mi |
| ARASTEK Heating and Cooling , HVAC , Air Conditioning | 5.0★ (2) | 18 mi |
| Brothers Energy | 5.0★ (2) | 18 mi |
| CM heating and air | 5.0★ (2) | 21 mi |
| Creative Comfort Systems | 5.0★ (2) | 19 mi |
| Denny's Heating & Air Conditioning | 5.0★ (8) | 20 mi |
| FUSE Heating and Air Conditioning | 5.0★ (2) | 20 mi |
| Icon Plumbing & Design | 4.0★ (4) | 8 mi |
| Ledesma Heating Air | 5.0★ (2) | 10 mi |
| Magic AC Repair Noe Valley | 4.9★ (24) | 24 mi |
| Mason Heating & Air Conditioning | In Novato | |
| North Cal Heating And Air | 5.0★ (2) | 18 mi |
| North Star Heating & Cooling | 5.0★ (2) | 18 mi |
| PriceFixer Novato | In Novato | |
| Reid Heating & Energy Inc | 4.2★ (5) | 12 mi |
| Richardson Heating & Air Conditioning | 3.0★ (2) | 14 mi |
| Rising Design & Construction | 3.0★ (2) | 12 mi |
| Sears Heating and Air Conditioning | 3.0★ (2) | 17 mi |
| SOS PLUMBING, HEATING & AIR | 4.0★ (3) | 24 mi |
National price ranges in USD, not adjusted for Novato. 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 215 Novato 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 Novato 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 |