Top 50 of 160 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank
24 of the 50 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.
#1 for emergency heating and cooling in Petaluma: Ongaro & Sons, open 24/7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
| Rank | Business | CR Score | Google rating | Based in | Hours |
|---|---|---|---|---|---|
| 1 | Ongaro & Sons | 66 | 4.9★ (538) | Petaluma | 24/7 |
| 2 | Next Day Air & Heating | 64 | 5.0★ (499) | Cotati, 9 mi away | 24/7 |
| 3 | Ongaro & Sons | 64 | 4.9★ (1,222) | Santa Rosa, 15 mi away | 24/7 |
| 4 | KC Home Services Plumbing, Heating & AC Repair | 64 | 4.9★ (827) | Santa Rosa, 13 mi away | 24/7 |
| 5 | Milano Mechanical | 63 | 5.0★ (82) | Petaluma | 24/7 |
| 6 | Bellows Plumbing, Heating, Cooling & Electrical | 63 | 4.9★ (480) | Novato, 12 mi away | 24/7 |
| 7 | Ongaro & Sons | 62 | 4.9★ (762) | San Anselmo, 18 mi away | 24/7 |
| 8 | Bragg Home Services | 62 | 4.9★ (486) | Santa Rosa, 18 mi away | 24/7 |
| 9 | Henry Mechanical | 62 | 5.0★ (866) | Windsor, 23 mi away | 24/7 |
| 10 | Martin Electric and HVAC | 62 | 5.0★ (30) | Petaluma | 24/7 |
24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.
Open 24/7 · 4.9 from 538 Google reviews
Open 24/7 · 5.0 from 499 Google reviews
Open 24/7 · 4.9 from 1,222 Google reviews
#4KC Home Services Plumbing, Heating & AC Repair
Open 24/7 · 4.9 from 827 Google reviews
Open 24/7 · 5.0 from 82 Google reviews
#6Bellows Plumbing, Heating, Cooling & Electrical
Open 24/7 · 4.9 from 480 Google reviews
Open 24/7 · 4.9 from 762 Google reviews
Open 24/7 · 4.9 from 486 Google reviews
24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 160 is on the HVAC contractors page.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 538 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cotati, 9 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 499 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 15 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 1,222 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 13 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 827 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Petaluma
Ranked #5 because of its Google rating and trade focus: 5.0★ from 82 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Novato, 12 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 480 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Anselmo, 18 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 762 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 18 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 486 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Windsor, 23 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 866 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Petaluma
Ranked #10 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Windsor, 22 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 531 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sonoma, 8 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 46 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rohnert Park, 9 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cotati, 4 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 16 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 84 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 17 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 99 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Petaluma
Ranked #17 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vallejo, 22 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 17 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sonoma, 10 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 18 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Napa, 18 mi away
Ranked #22 because of its Google rating and trade focus: 4.0★ from 19 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Larkfield-Wikiup, 14 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Rosa, 17 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Petaluma
Ranked #25 because of its Google rating and trade focus: 5.0★ from 39 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.
Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.
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 |
|---|---|---|
| Reputation | 15% | Google star rating, adjusted for how many reviews back it |
| Credentials | 15% | Active state license, bond and workers’ comp on file |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list |
| Recency | 5% | Share of reviews from the last 12 months |
| Availability | 15% | Weekly open hours, Saturday, Sunday, 24/7 or same-day |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) |
| Proximity | 5% | Based in the city scores highest, less the farther away it is |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are |