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Emergency HVAC Contractors in Windsor, CA (2026)

Top 50 of 96 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank

19 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.

If you smell gas, leave the building now and call your gas utility or 911 from outside.

The short answer

  1. 1

    #1 for emergency heating and cooling in Windsor: Henry Mechanical, open 24/7.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

Top emergency HVAC contractors in Windsor at a glance

Top emergency HVAC contractors in Windsor at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Henry Mechanical685.0★ (866)Windsor24/7
2Same Day Heating, Cooling, Plumbing664.9★ (531)Windsor24/7
3Ongaro & Sons654.9★ (1,222)Santa Rosa, 9 mi away24/7
4Bragg Home Services654.9★ (486)Santa Rosa, 6 mi away24/7
5KC Home Services Plumbing, Heating & AC Repair644.9★ (827)Santa Rosa, 11 mi away24/7
6Next Day Air & Heating635.0★ (499)Cotati, 15 mi away24/7
7Stout's Heating & AC, Inc624.8★ (99)Santa Rosa, 7 mi away24/7
8The Duct Doctor615.0★ (84)Santa Rosa, 8 mi away24/7
9Ongaro & Sons614.9★ (538)Petaluma, 22 mi away24/7
10Reliable Air Conditioning Santa Rosa595.0★ (15)Santa Rosa, 7 mi away24/7

Call an emergency HVAC contractor in Windsor now

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.

The 50 emergency HVAC contractors in Windsor, ranked

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 96 is on the HVAC contractors page.

  1. Ranked #1 in Windsor

    #1 Henry Mechanical

    Based in Windsor

    68/100CR Score

    Ranked #1 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.

    • 5.0★ from 866 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    7656 Bell Rd, Windsor, CA 95492
    View profile for Henry Mechanical(707) 585-1787

  3. #3 Ongaro & Sons

    Based in Santa Rosa, 9 mi away

    65/100CR Score

    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.

    • 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
    View profile for Ongaro & Sons(707) 908-9208

  4. #4 Bragg Home Services

    Based in Santa Rosa, 6 mi away

    65/100CR Score

    Ranked #4 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.

    • 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
    View profile for Bragg Home Services(707) 639-1746

  6. #6 Next Day Air & Heating

    Based in Cotati, 15 mi away

    63/100CR Score

    Ranked #6 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.

    • 5.0★ from 499 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    651 Portal St #6, Cotati, CA 94931
    View profile for Next Day Air & Heating(707) 600-6986

  7. #7 Stout's Heating & AC, Inc

    Based in Santa Rosa, 7 mi away

    62/100CR Score

    Ranked #7 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.

    • 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
    View profile for Stout's Heating & AC, Inc(707) 527-1504

  8. #8 The Duct Doctor

    Based in Santa Rosa, 8 mi away

    61/100CR Score

    Ranked #8 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.

    • 5.0★ from 84 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    720 Blossom Way, Santa Rosa, CA 95401
    View profile for The Duct Doctor(707) 490-2722

  9. #9 Ongaro & Sons

    Based in Petaluma, 22 mi away

    61/100CR Score

    Ranked #9 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.

    • 4.9★ from 538 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    719 Southpoint Blvd, Petaluma, CA 94954
    View profile for Ongaro & Sons(707) 633-9499

  12. #12 Northbay Comfort Inc.

    Based in Rohnert Park, 15 mi away

    59/100CR Score

    Ranked #12 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.

    • 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
    View profile for Northbay Comfort Inc.(707) 723-6182

  13. #13 Milano Mechanical

    Based in Petaluma, 21 mi away

    58/100CR Score

    Ranked #13 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.

    • 5.0★ from 82 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1317 Scott St, Petaluma, CA 94954
    View profile for Milano Mechanical(707) 778-9339

  14. #14 Climate Pro Services

    Based in Santa Rosa, 7 mi away

    57/100CR Score

    Ranked #14 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.

    • 5.0★ from 3 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1780 Piner Rd, Santa Rosa, CA 95403
    View profile for Climate Pro Services(707) 581-1534

  15. #15 Severson Heating & Cooling

    Based in Sonoma, 24 mi away

    56/100CR Score

    Ranked #15 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.

    • 4.9★ from 46 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    19260 Wyatt Rd, Sonoma, CA 95476
    View profile for Severson Heating & Cooling(707) 938-3929

  16. #16 Martin Electric and HVAC

    Based in Petaluma, 23 mi away

    56/100CR Score

    Ranked #16 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.

    • 5.0★ from 30 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    Water St, Petaluma, CA 94952
    View profile for Martin Electric and HVAC(415) 699-4040

  18. #18 STAT Heating & Air

    Based in Larkfield-Wikiup, 14 mi away

    55/100CR Score

    Ranked #18 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.

    • 5.0★ from 3 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for STAT Heating & Air(707) 755-0518

  20. #20 Optemo Hydronics

    Based in Santa Rosa, 9 mi away

    49/100CR Score

    Ranked #20 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Heating contractor”.

    Based on 7 of 10 factors; credentials, recency and availability not yet collected.

    • 5.0★ from 18 Google reviews
    Address
    332 Carrillo St, Santa Rosa, CA 95401
    View profile for Optemo Hydronics(707) 292-3400

  22. #22 Zero Energy Associates

    Based in Sebastopol, 11 mi away

    47/100CR Score

    Ranked #22 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “HVAC contractor”.

    Based on 7 of 10 factors; credentials, recency and availability not yet collected.

    • 5.0★ from 9 Google reviews
    Address
    851 Gravenstein Hwy S, Sebastopol, CA 95472
    View profile for Zero Energy Associates(707) 544-3900

  24. #24 CFM HVAC

    Based in Petaluma, 21 mi away

    47/100CR Score

    Ranked #24 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.

    • 5.0★ from 39 Google reviews
    Address
    1364 N McDowell Blvd Suite 5, Petaluma, CA 94954
    View profile for CFM HVAC(707) 775-8117

Top 50 of 96 HVAC contractors by emergency score

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.

HVAC contractors in Windsor, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Moore Home Heating Cooling & Plumbing Services474.7★ (1,764)8 mi
27Elevated Comfort454.9★ (320)7 mi
28HP Mechanical455.0★ (123)2 mi
29Elevated Comfort454.9★ (949)15 mi
30John Owens Services, Inc.454.9★ (342)8 mi
31Ross HVAC And Appliance Service444.9★ (404)14 mi
32Enviro Heating & Air Conditioning Inc434.9★ (343)14 mi
33Monaco Mechanical435.0★ (36)3 mi
34Leland Plumbing Heating & Cooling425.0★ (21)In Windsor
35Bill Kutz Heating and Air Conditioning424.9★ (28)2 mi
36Cherry Hill Plumbing & Heating425.0★ (65)9 mi
37North End Plumbing, Heating & Air425.0★ (86)11 mi
38Burton Heating & Air Conditioning424.8★ (20)In Windsor
39Valley Comfort Heating and Air424.7★ (93)10 mi
40Warming Trends Inc.414.4★ (96)9 mi
41American Heating & Air LLC415.0★ (136)18 mi
42SolarCraft415.0★ (25)7 mi
43Comfort Response Team415.0★ (29)8 mi
44Accurate Heating & Air Conditioning414.9★ (46)12 mi
45HVAC Essentials405.0★ (30)11 mi
46Mountain House Mechanical405.0★ (52)14 mi
47TJ’s Heating Cooling & Air405.0★ (14)6 mi
48Larsen Energy Systems404.9★ (19)8 mi
49Hulbert Heating & Air Conditioning Inc405.0★ (54)15 mi
50Blue Oak Heating & Cooling405.0★ (17)8 mi

How we ranked emergency HVAC contractors in Windsor

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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed from
Reputation15%Google star rating, adjusted for how many reviews back it
Credentials15%Active state license, bond and workers’ comp on file
Review volume10%Number of Google reviews, compared with the most-reviewed business on the list
Recency5%Share of reviews from the last 12 months
Availability15%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%How clearly the business does this trade (its Google category and name)
Proximity5%Based in the city scores highest, less the farther away it is
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodically
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there are

Emergency HVAC contractors in Windsor: questions

Which HVAC contractors in Windsor are open 24/7?

19 on this list post 24/7 hours, including Henry Mechanical, Same Day Heating, Cooling, Plumbing, Ongaro & Sons, Bragg Home Services and KC Home Services Plumbing, Heating & AC Repair.

Who is ranked #1 for emergency heating and cooling in Windsor, CA?

Henry Mechanical is #1, with a CR Score of 68 out of 100 on emergency weights.

How are emergency HVAC contractors in Windsor ranked?

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.

What should I do before the HVAC contractor arrives?

If you smell gas, leave the building now and call your gas utility or 911 from outside.

How many emergency HVAC contractors here list a phone number?

25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Windsor

  1. October 2026: CR Scores recalculated for 96 hvac contractors serving Windsor.
  2. October 2026: 4 duplicate listings merged.

More emergency and heating and cooling pages