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Emergency HVAC Contractors in Sonoma, CA (2026)

Top 50 of 195 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank

25 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 Sonoma: Ongaro & Sons, 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 Sonoma at a glance

Top emergency HVAC contractors in Sonoma at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Ongaro & Sons644.9★ (538)Petaluma, 11 mi away24/7
2Ongaro & Sons644.9★ (1,222)Santa Rosa, 17 mi away24/7
3KC Home Services Plumbing, Heating & AC Repair634.9★ (827)Santa Rosa, 16 mi away24/7
4Next Day Air & Heating635.0★ (499)Cotati, 15 mi away24/7
5Bellows Plumbing, Heating, Cooling & Electrical624.9★ (480)Novato, 16 mi away24/7
6Severson Heating & Cooling624.9★ (46)Sonoma24/7
7Ongaro & Sons614.9★ (762)San Anselmo, 23 mi away24/7
8Bragg Home Services614.9★ (486)Santa Rosa, 20 mi away24/7
9Milano Mechanical615.0★ (82)Petaluma, 11 mi away24/7
10Same Day Heating, Cooling, Plumbing604.9★ (531)Windsor, 25 mi away24/7

Call an emergency HVAC contractor in Sonoma 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 Sonoma, 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 195 is on the HVAC contractors page.

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  1. Ranked #1 in Sonoma

    #1 Ongaro & Sons

    Based in Petaluma, 11 mi away

    64/100CR Score

    Ranked #1 because of its Google rating and trade focus: 4.9★ from 538 Google reviews, listed on Google as “HVAC contractor”.

    • 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

  2. #2 Ongaro & Sons

    Based in Santa Rosa, 17 mi away

    64/100CR Score

    Ranked #2 because of its Google rating and trade focus: 4.9★ from 1,222 Google reviews, listed on Google as “HVAC contractor”.

    • 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

  7. #7 Ongaro & Sons

    Based in San Anselmo, 23 mi away

    61/100CR Score

    Ranked #7 because of its Google rating and trade focus: 4.9★ from 762 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 762 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    11 Ross Ave, San Anselmo, CA 94960
    View profile for Ongaro & Sons(415) 523-3755

  8. #8 Bragg Home Services

    Based in Santa Rosa, 20 mi away

    61/100CR Score

    Ranked #8 because of its Google rating and trade focus: 4.9★ from 486 Google reviews, listed on Google as “HVAC contractor”.

    • 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

  9. #9 Milano Mechanical

    Based in Petaluma, 11 mi away

    61/100CR Score

    Ranked #9 because of its Google rating and trade focus: 5.0★ from 82 Google reviews, listed on Google as “HVAC contractor”.

    • 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

  12. #12 The Duct Doctor

    Based in Santa Rosa, 18 mi away

    59/100CR Score

    Ranked #12 because of its Google rating and trade focus: 5.0★ from 84 Google reviews, listed on Google as “HVAC contractor”.

    • 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

  13. #13 Northbay Comfort Inc.

    Based in Rohnert Park, 14 mi away

    59/100CR Score

    Ranked #13 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “HVAC contractor”.

    • 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

  19. #19 AirFlow HVAC Experts

    Based in Fairfield, 24 mi away

    56/100CR Score

    Ranked #19 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 29 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    613 E Travis Blvd, Fairfield, CA 94533
    View profile for AirFlow HVAC Experts(707) 216-2415

Top 50 of 195 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 Sonoma, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Pure Air Cooling & Hvac Corporation535.0★ (8)24 mi
27Climate Pro Services535.0★ (3)20 mi
28A-1 COMFORT HEATING AND AIR535.0★ (4)22 mi
29STAT Heating & Air535.0★ (3)21 mi
30SOS PLUMBING, HEATING & AIR524.0★ (3)24 mi
31Flow Elite Plumbing & Hydronic Heating515.0★ (21)24 mi
32CFM HVAC505.0★ (39)11 mi
33Denny's Heating & Air Conditioning475.0★ (8)9 mi
34Icon Plumbing & Design474.0★ (4)21 mi
35Optemo Hydronics465.0★ (18)18 mi
36Fuse HVAC & Appliance Repair Napa464.8★ (912)10 mi
37Peter Levi Plumbing, Heating, Cooling, Drains454.8★ (1,640)16 mi
38Golden State Comfort Systems455.0★ (19)21 mi
39Elevated Comfort454.9★ (949)15 mi
40Apes Plumbing Heating Sewer and Drain Services454.9★ (90)In Sonoma
41North HVAC Services, Inc Heating & Air Conditioning455.0★ (240)8 mi
42Amy's Appliances Repair453.9★ (11)17 mi
43Moore Home Heating Cooling & Plumbing Services444.7★ (1,764)19 mi
44Larson Air Solutions445.0★ (12)22 mi
45Zero Energy Associates445.0★ (9)21 mi
46Gene Burch Plumbing Heating & Air444.9★ (588)16 mi
47Fuse service: HVAC, Electrical & Appliance445.0★ (45)In Sonoma
48Boden Plumbing Heating & Air444.6★ (72)In Sonoma
49Ross HVAC And Appliance Service444.9★ (404)15 mi
50Enviro Heating & Air Conditioning Inc434.9★ (343)14 mi

How we ranked emergency HVAC contractors in Sonoma

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 Sonoma: questions

Which HVAC contractors in Sonoma are open 24/7?

25 on this list post 24/7 hours, including Ongaro & Sons, Ongaro & Sons, KC Home Services Plumbing, Heating & AC Repair, Next Day Air & Heating and Bellows Plumbing, Heating, Cooling & Electrical.

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

Ongaro & Sons is #1, with a CR Score of 64 out of 100 on emergency weights.

How are emergency HVAC contractors in Sonoma 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 Sonoma

  1. October 2026: CR Scores recalculated for 195 hvac contractors serving Sonoma.
  2. October 2026: 3 duplicate listings merged.

More emergency and heating and cooling pages