96 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Windsor: Same Day Heating, Cooling, Plumbing, CR Score 94/100; 4.9★ from 531 Google reviews; open 24/7.
Best for emergencies (open 24/7): Ongaro & Sons, posts 24/7 hours; ranked #2 of 96.
Most-reviewed: Moore Home Heating Cooling & Plumbing Services, 1,764 Google reviews at 4.7★, the most of 96 ranked; ranked #16.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
96 Windsor HVAC contractors are ranked here by CR Score, from 8 published factors. 19 are open 24/7, 45 open Saturdays and 34 open Sundays, based on posted hours. The median Google rating is 5.0★ across 96 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Same Day Heating, Cooling, Plumbing | 94 | 4.9★ (531) | Windsor | 24/7 | Overall |
| 2 | Ongaro & Sons | 93 | 4.9★ (1,222) | Santa Rosa, 9 mi away | 24/7 | Emergencies |
| 3 | Bragg Home Services | 92 | 4.9★ (486) | Santa Rosa, 6 mi away | 24/7 | — |
| 4 | KC Home Services Plumbing, Heating & AC Repair | 92 | 4.9★ (827) | Santa Rosa, 11 mi away | 24/7 | — |
| 5 | Next Day Air & Heating | 91 | 5.0★ (499) | Cotati, 15 mi away | 24/7 | — |
| 6 | Henry Mechanical | 89 | 5.0★ (866) | Windsor | 24/7 | — |
| 7 | The Duct Doctor | 89 | 5.0★ (84) | Santa Rosa, 8 mi away | 24/7 | — |
| 8 | Stout's Heating & AC, Inc | 89 | 4.8★ (99) | Santa Rosa, 7 mi away | 24/7 | — |
| 9 | HP Mechanical | 89 | 5.0★ (123) | Santa Rosa, 2 mi away | Sat · Sun · Evenings | — |
| 10 | Ongaro & Sons | 88 | 4.9★ (538) | Petaluma, 22 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and availability: 4.9★ from 531 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Santa Rosa, 9 mi away
Ranked #2 because of its Google rating and availability: 4.9★ from 1,222 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Santa Rosa, 6 mi away
Ranked #3 because of its Google rating and availability: 4.9★ from 486 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Santa Rosa, 11 mi away
Ranked #4 because of its Google rating and availability: 4.9★ from 827 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cotati, 15 mi away
Ranked #5 because of its Google rating and availability: 5.0★ from 499 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Windsor
Ranked #6 because of its Google rating and trade focus: 5.0★ from 866 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Santa Rosa, 8 mi away
Ranked #7 because of its Google rating and availability: 5.0★ from 84 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Santa Rosa, 7 mi away
Ranked #8 because of its Google rating and availability: 4.8★ from 99 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Santa Rosa, 2 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 123 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Petaluma, 22 mi away
Ranked #10 because of its Google rating and availability: 4.9★ from 538 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Santa Rosa, 7 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 320 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cotati, 15 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 949 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rohnert Park, 15 mi away
Ranked #13 because of its Google rating and availability: 5.0★ from 44 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Santa Rosa, 6 mi away
Ranked #14 because of its Google rating and availability: 5.0★ from 12 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Petaluma, 21 mi away
Ranked #15 because of its Google rating and availability: 5.0★ from 82 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Santa Rosa, 8 mi away
Ranked #16 because of its Google rating and review volume: 4.7★ from 1,764 Google reviews, the most Google reviews on this list (1,764).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Santa Rosa, 7 mi away
Ranked #17 because of its Google rating and availability: 5.0★ from 15 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Santa Rosa, 8 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Petaluma, 23 mi away
Ranked #19 because of its Google rating and availability: 5.0★ from 30 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rohnert Park, 14 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 404 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cotati, 22 mi away
Ranked #21 because of its Google rating and availability: 5.0★ from 19 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Santa Rosa, 9 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Heating contractor”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Santa Rosa, 7 mi away
Ranked #23 because of its Google rating and availability: 5.0★ from 3 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Santa Rosa, 7 mi away
Ranked #24 because of its Google rating and trade focus: 4.6★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sebastopol, 11 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 23 Google reviews, listed on Google as “HVAC contractor”.
Based on 6 of 8 factors; credentials and recency 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. We publish the top 50 of 96 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 |
|---|---|---|
| AC Connection Inc ( Air Connection) | 5.0★ (2) | 8 mi |
| American Chiller Service, Inc. | 3.0★ (2) | 21 mi |
| Bill Kutz Heating and Air Conditioning | 4.9★ (28) | 2 mi |
| Brown’s Heating & Air | 5.0★ (1) | 6 mi |
| ColdFlo Mechanical, Inc. | 3.0★ (2) | 6 mi |
| Facciano HVAC and Sheet Metal | 3.0★ (2) | 11 mi |
| Golden State Sheet Metal Heating & A/C | 1.0★ (1) | In Windsor |
| Hulbert Heating & Air Conditioning Inc | 5.0★ (54) | 15 mi |
| HVAC Essentials | 5.0★ (30) | 11 mi |
| Ledesma Heating Air | 5.0★ (2) | 24 mi |
| Lennox | In Windsor | |
| Madcon Inc. | 3.5★ (2) | 5 mi |
| Norman S. Wright Mechanical Equipment | 5.0★ (1) | 2 mi |
| Severson Heating & Cooling | 4.9★ (46) | 24 mi |
| SolarCraft | 5.0★ (25) | 7 mi |
| St. Peter's Construction | In Windsor | |
| TJ’s Heating Cooling & Air | 5.0★ (14) | 6 mi |
| Todd Norris Plumbing & Heating | 5.0★ (2) | 5 mi |
| Valley Comfort Heating and Air | 4.7★ (93) | 10 mi |
| Vince Sigal Electric Inc | In Windsor |
National price ranges in USD, not adjusted for Windsor. 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 96 Windsor 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 Windsor 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 |