91/100CR Score
Ranked #1 because of its Google rating and availability: 4.9★ from 538 Google reviews, open 24/7.
- 4.9★ from 538 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 719 Southpoint Blvd, Petaluma, CA 94954
Best HVAC Contractors in Sonoma, CA (2026)
195 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Sonoma: Ongaro & Sons, CR Score 91/100; 4.9★ from 538 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Ongaro & Sons, posts 24/7 hours; ranked #2 of 195.
- 29
Most-reviewed: Moore Home Heating Cooling & Plumbing Services, 1,764 Google reviews at 4.7★, the most of 195 ranked; ranked #29.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
195 Sonoma HVAC contractors are ranked here by CR Score, from 8 published factors. 32 are open 24/7, 88 open Saturdays and 69 open Sundays, based on posted hours. The median Google rating is 5.0★ across 195 rated businesses.
Top 10 HVAC contractors in Sonoma at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Ongaro & Sons | 91 | 4.9★ (538) | Petaluma, 11 mi away | 24/7 | Overall |
| 2 | Ongaro & Sons | 91 | 4.9★ (1,222) | Santa Rosa, 17 mi away | 24/7 | Emergencies |
| 3 | Next Day Air & Heating | 91 | 5.0★ (499) | Cotati, 15 mi away | 24/7 | — |
| 4 | KC Home Services Plumbing, Heating & AC Repair | 91 | 4.9★ (827) | Santa Rosa, 16 mi away | 24/7 | — |
| 5 | Bellows Plumbing, Heating, Cooling & Electrical | 90 | 4.9★ (480) | Novato, 16 mi away | 24/7 | — |
| 6 | Ongaro & Sons | 89 | 4.9★ (762) | San Anselmo, 23 mi away | 24/7 | — |
| 7 | Bragg Home Services | 89 | 4.9★ (486) | Santa Rosa, 20 mi away | 24/7 | — |
| 8 | Fuse HVAC & Appliance Repair Napa | 88 | 4.8★ (912) | Napa, 10 mi away | Sat · Sun | — |
| 9 | Milano Mechanical | 88 | 5.0★ (82) | Petaluma, 11 mi away | 24/7 | — |
| 10 | Elevated Comfort | 88 | 4.9★ (949) | Cotati, 15 mi away | Sat · Sun · Evenings | — |
The 195 best HVAC contractors in Sonoma, ranked
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.
Based in Santa Rosa, 17 mi away
91/100CR ScoreRanked #2 because of its Google rating and availability: 4.9★ from 1,222 Google reviews, open 24/7.
- 4.9★ from 1,222 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 250 D St Suite 700B, Santa Rosa, CA 95404
Based in Cotati, 15 mi away
91/100CR ScoreRanked #3 because of its Google rating and availability: 5.0★ from 499 Google reviews, open 24/7.
- 5.0★ from 499 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 651 Portal St #6, Cotati, CA 94931
Based in Santa Rosa, 16 mi away
91/100CR ScoreRanked #4 because of its Google rating and availability: 4.9★ from 827 Google reviews, open 24/7.
- 4.9★ from 827 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 328 Yolanda Ave, Santa Rosa, CA 95404
Based in Novato, 16 mi away
90/100CR ScoreRanked #5 because of its Google rating and availability: 4.9★ from 480 Google reviews, open 24/7.
- 4.9★ from 480 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 86 Hamilton Dr Suite A, Novato, CA 94949
Based in San Anselmo, 23 mi away
89/100CR ScoreRanked #6 because of its Google rating and availability: 4.9★ from 762 Google reviews, open 24/7.
- 4.9★ from 762 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11 Ross Ave, San Anselmo, CA 94960
Based in Santa Rosa, 20 mi away
89/100CR ScoreRanked #7 because of its Google rating and availability: 4.9★ from 486 Google reviews, open 24/7.
- 4.9★ from 486 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3345 Industrial Dr STE 16, Santa Rosa, CA 95403
Based in Napa, 10 mi away
88/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.8★ from 912 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 912 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat–Sun 7 AM–5 PM
- Address
- 794 Braydon Pl, Napa, CA 94559
Based in Petaluma, 11 mi away
88/100CR ScoreRanked #9 because of its Google rating and availability: 5.0★ from 82 Google reviews, open 24/7.
- 5.0★ from 82 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1317 Scott St, Petaluma, CA 94954
#10 Elevated Comfort
Based in Cotati, 15 mi away
88/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 949 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 949 Google reviews
- Hours
- Mon–Sat 7 AM–8 PM · Sun 8 AM–8 PM
- Address
- 374 Blodgett St Suite 4, Cotati, CA 94931
Based in Windsor, 25 mi away
88/100CR ScoreRanked #11 because of its Google rating and availability: 4.9★ from 531 Google reviews, open 24/7.
- 4.9★ from 531 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 200 American Way, Windsor, CA 95492
Based in Sonoma
87/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 45 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 45 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat–Sun 8 AM–5 PM
- Address
- 16914 Sonoma Hwy, Sonoma, CA 95476
#13 The Duct Doctor
Based in Santa Rosa, 18 mi away
87/100CR ScoreRanked #13 because of its Google rating and availability: 5.0★ from 84 Google reviews, open 24/7.
- 5.0★ from 84 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 720 Blossom Way, Santa Rosa, CA 95401
Based in Petaluma, 11 mi away
86/100CR ScoreRanked #14 because of its Google rating and availability: 5.0★ from 30 Google reviews, open 24/7.
- 5.0★ from 30 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- Water St, Petaluma, CA 94952
Based in Rohnert Park, 14 mi away
86/100CR ScoreRanked #15 because of its Google rating and availability: 5.0★ from 44 Google reviews, open 24/7.
- 5.0★ from 44 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5701 State Farm Dr #9, Rohnert Park, CA 94928
Based in Sonoma
86/100CR ScoreRanked #16 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
- 5.0★ from 4 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 20549 Broadway, Sonoma, CA 95476
Based in Benicia, 23 mi away
85/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 1,142 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 1,142 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 361 W Channel Rd, Benicia, CA 94510
Based in Vallejo, 17 mi away
85/100CR ScoreRanked #18 because of its Google rating and availability: 5.0★ from 38 Google reviews, open 24/7.
- 5.0★ from 38 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 332 Tennessee St, Vallejo, CA 94590
Based in Santa Rosa, 19 mi away
85/100CR ScoreRanked #19 because of its Google rating and availability: 4.8★ from 99 Google reviews, open 24/7.
- 4.8★ from 99 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 840 Piner Rd STE 14, Santa Rosa, CA 95403
#20 Elevated Comfort
Based in Santa Rosa, 20 mi away
85/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 320 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 320 Google reviews
- Hours
- Mon–Sat 7 AM–8 PM · Sun 8 AM–8 PM
- Address
- 3510 Industrial Dr unit K, Santa Rosa, CA 95403
Based in Cotati, 14 mi away
85/100CR ScoreRanked #21 because of its Google rating and availability: 5.0★ from 19 Google reviews, open 24/7.
- 5.0★ from 19 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Sonoma
85/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 17 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 17 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 17170 Vailetti Dr, Sonoma, CA 95476
Based in Novato, 16 mi away
84/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.8★ from 1,640 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.8★ from 1,640 Google reviews
- Hours
- Mon–Fri 7 AM–7:30 PM · Sat 7:30 AM–4 PM · Sun closed
- Address
- 24 Digital Dr STE 1, Novato, CA 94949
Based in Sonoma
84/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 90 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.9★ from 90 Google reviews
- Hours
- Mon–Sat 8 AM–5 PM · Sun closed
- Address
- 19100 Riverside Dr, Sonoma, CA 95476
Based in Napa, 8 mi away
84/100CR ScoreRanked #25 because of its Google rating and availability: 4.0★ from 19 Google reviews, open 24/7.
- 4.0★ from 19 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4405 Solano Ave, Napa, CA 94558
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 195 ranked HVAC contractors here; the rest are on their profiles.
Also serving Sonoma
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 |
|---|---|---|
| A-1 COMFORT HEATING AND AIR | 5.0★ (4) | 22 mi |
| AC Connection Inc ( Air Connection) | 5.0★ (2) | 18 mi |
| American Chiller Service, Inc. | 3.0★ (2) | 11 mi |
| Amy's Appliances Repair | 3.9★ (11) | 17 mi |
| Climate Concepts | 5.0★ (2) | 25 mi |
| Climate Pro Services | 5.0★ (3) | 20 mi |
| CM heating and air | 5.0★ (2) | 9 mi |
| Constantini's Heating & Air Conditioning Service | 5.0★ (6) | 21 mi |
| Creative Comfort Systems | 5.0★ (2) | 18 mi |
| Denny's Heating & Air Conditioning | 5.0★ (8) | 9 mi |
| FUSE Heating and Air Conditioning | 5.0★ (2) | 9 mi |
| Icon Plumbing & Design | 4.0★ (4) | 21 mi |
| Larson Air Solutions | 5.0★ (12) | 22 mi |
| Ledesma Heating Air | 5.0★ (2) | 10 mi |
| Reid Heating & Energy Inc | 4.2★ (5) | 24 mi |
| Richardson Heating & Air Conditioning | 3.0★ (2) | In Sonoma |
| Sears Heating and Air Conditioning | 3.0★ (2) | 22 mi |
| SOS PLUMBING, HEATING & AIR | 4.0★ (3) | 24 mi |
| Starr Heating & Cooling | 5.0★ (1) | 7 mi |
| Zero Energy Associates | 5.0★ (9) | 21 mi |
How much do HVAC contractors cost in Sonoma?
National price ranges in USD, not adjusted for Sonoma. 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 Sonoma HVAC contractors
We scored 195 Sonoma 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 Sonoma 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 |
HVAC contractors in Sonoma: frequently asked questions
Who is the best HVAC contractor in Sonoma?
By CR Score, the highest-ranked HVAC contractor in Sonoma, CA is Ongaro & Sons with a CR Score of 91/100. It has 4.9★ from 538 Google reviews. It is open 24/7. Ongaro & Sons (#2) and Next Day Air & Heating (#3) follow. We ranked 195 HVAC contractors on 8 factors, last updated October 22, 2026.
How many HVAC contractors are there in Sonoma?
ContractorsRanked ranks 195 HVAC contractors serving Sonoma, CA. 6 of them are based in Sonoma; 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 Sonoma are open 24/7?
32 ranked HVAC contractors in Sonoma post 24/7 hours. The highest-ranked are Ongaro & Sons (#1), Ongaro & Sons (#2) and Next Day Air & Heating (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Sonoma work on weekends?
88 of 195 ranked HVAC contractors post Saturday hours and 69 post Sunday hours. The highest-ranked open Saturdays are Ongaro & Sons (#1), Ongaro & Sons (#2) and Next Day Air & Heating (#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 Sonoma?
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 Sonoma. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Sonoma HVAC contractors have?
The median Google rating among 195 rated HVAC contractors in Sonoma is 5.0★, with a median of 14 reviews. Moore Home Heating Cooling & Plumbing Services has the most, 1,764 reviews, and ranks #29. 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 Sonoma?
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 Sonoma
- October 2026: CR Scores recalculated for 195 hvac contractors serving Sonoma.
- October 2026: 3 duplicate listings merged.
More HVAC contractors and Sonoma pages
HVAC contractors near Sonoma
- HVAC contractors in Boyes Hot Springs, CA180 ranked
- HVAC contractors in Napa, CA211 ranked
- HVAC contractors in Petaluma, CA160 ranked
- HVAC contractors in American Canyon, CA320 ranked
- HVAC contractors in Rohnert Park, CA131 ranked
- HVAC contractors in Cotati, CA132 ranked
- HVAC contractors in Novato, CA214 ranked
- HVAC contractors in Saint Helena, CA107 ranked
- HVAC contractors in Vallejo, CA361 ranked
- HVAC contractors in Roseland, CA114 ranked
Other trades in Sonoma
- Roofers in Sonoma412 ranked
- Plumbers in Sonoma297 ranked
- Electricians in Sonoma175 ranked
- General contractors in Sonoma333 ranked
- Painters in Sonoma65 ranked
- Landscapers in Sonoma78 ranked
- Handymen in Sonoma16 ranked
- Kitchen remodelers in Sonoma149 ranked
- Bathroom remodelers in Sonoma140 ranked
- Flooring contractors in Sonoma103 ranked
- Tile installers in Sonoma18 ranked
- Drywall contractors in Sonoma13 ranked
- Concrete contractors in Sonoma125 ranked
- Fence contractors in Sonoma72 ranked
- Deck builders in Sonoma51 ranked
- Siding contractors in Sonoma67 ranked
- Window installers in Sonoma185 ranked
- Gutter installers in Sonoma78 ranked
- Insulation contractors in Sonoma33 ranked
- Solar installers in Sonoma184 ranked
- Garage door repair companies in Sonoma55 ranked
- Foundation repair companies in Sonoma81 ranked
- Tree services in Sonoma143 ranked
- Masonry contractors in Sonoma71 ranked
- Water damage restoration companies in Sonoma212 ranked
- Home builders in Sonoma259 ranked
- Demolition contractors in Sonoma39 ranked
- All contractors in Sonoma