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Emergency HVAC Contractors in Palo Alto, CA (2026)

Top 50 of 548 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 Palo Alto: Fuse service, 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 Palo Alto at a glance

Top emergency HVAC contractors in Palo Alto at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Fuse service655.0★ (444)Palo Alto24/7
2Service Champions644.9★ (3,407)San Jose, 14 mi away24/7
3Heating And Air Experts - Affordable HVAC Contractor in Fremont, California635.0★ (761)Fremont, 11 mi away24/7
4Fuse HVAC, Refrigeration, Electrical & Plumbing634.9★ (1,034)Santa Clara, 12 mi away24/7
5TRIO Heating, Air & Plumbing634.9★ (145)Palo Alto24/7
6IRBIS Air Plumbing Electrical634.9★ (1,466)San Jose, 14 mi away24/7
7Cabrillo Plumbing, Heating & Air635.0★ (208)Menlo Park, 4 mi away24/7
8AIS Heating & Air Conditioning634.9★ (723)Fremont, 11 mi away24/7
9Same Day Air Conditioning & Heating634.7★ (550)Sunnyvale, 7 mi away24/7
10TRIO Heating, Air & Plumbing634.9★ (1,142)San Jose, 14 mi away24/7

Call an emergency HVAC contractor in Palo Alto 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 Palo Alto, 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 548 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 Palo Alto

    #1 Fuse service

    Based in Palo Alto

    65/100CR Score

    Ranked #1 because of its Google rating and trade focus: 5.0★ from 444 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 444 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    349 Everett Ave, Palo Alto, CA 94301
    View profile for Fuse service(408) 412-9334

  2. #2 Service Champions

    Based in San Jose, 14 mi away

    64/100CR Score

    Ranked #2 because of its Google rating and trade focus: 4.9★ from 3,407 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 3,407 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2161 Del Franco St, San Jose, CA 95131
    View profile for Service Champions(408) 549-7376

  14. #14 Atlas Trillo

    Based in San Jose, 13 mi away

    62/100CR Score

    Ranked #14 because of its Google rating and trade focus: 4.6★ from 1,308 Google reviews, listed on Google as “HVAC contractor”.

    • 4.6★ from 1,308 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2305 Paragon Dr, San Jose, CA 95131
    View profile for Atlas Trillo(408) 675-1924

  16. #16 Fuse

    Based in San Jose, 12 mi away

    62/100CR Score

    Ranked #16 because of its Google rating and trade focus: 4.9★ from 400 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 400 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2512 Seaboard Ave, San Jose, CA 95131
    View profile for Fuse(669) 240-1243

  17. #17 Service Champions

    Based in Pleasanton, 22 mi away

    62/100CR Score

    Ranked #17 because of its Google rating and trade focus: 4.8★ from 2,337 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 2,337 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    7020 Commerce Dr, Pleasanton, CA 94588
    View profile for Service Champions(925) 248-3458

  19. #19 Fuse Service

    Based in San Mateo, 11 mi away

    61/100CR Score

    Ranked #19 because of its Google rating and trade focus: 4.9★ from 264 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 264 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    3 37th Ave, San Mateo, CA 94403
    View profile for Fuse Service(408) 702-2554

  20. #20 ARS/ Rescue Rooter

    Based in San Jose, 13 mi away

    61/100CR Score

    Ranked #20 because of its Google rating and trade focus: 4.7★ from 546 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 546 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2305 Paragon Dr, San Jose, CA 95131
    View profile for ARS/ Rescue Rooter(408) 620-3458

  21. #21 Electric Air

    Based in Redwood City, 5 mi away

    61/100CR Score

    Ranked #21 because of its Google rating and trade focus: 5.0★ from 72 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 72 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2684 Middlefield Rd Unit D, Redwood City, CA 94063
    View profile for Electric Air(650) 670-4860

  22. #22 Excellent Repair

    Based in Palo Alto

    61/100CR Score

    Ranked #22 because of its Google rating and trade focus: 4.8★ from 43 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 43 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1734 Webster St, Palo Alto, CA 94301
    View profile for Excellent Repair(650) 290-6848

Top 50 of 548 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 Palo Alto, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Superior HVAC Contractor Palo Alto615.0★ (31)In Palo Alto
27Fuse Service614.9★ (273)13 mi
28Air Care Heating & Cooling Inc.604.9★ (426)17 mi
29Glover & Son Heating & Air Conditioning [Recommended] Bay Area AC Repair604.8★ (122)9 mi
30Albert Nahman Plumbing, Heating, and Cooling604.6★ (474)15 mi
31Fuse HVAC, Refrigeration, Electrical & Plumbing604.9★ (560)20 mi
32Pacific Coast Home Services604.4★ (735)14 mi
33Villquin Air Services604.9★ (172)13 mi
34HVAC Redwood City605.0★ (33)4 mi
35Precision Heating & Cooling605.0★ (236)17 mi
36Evergreen Air HVAC Corp605.0★ (115)13 mi
37HVAC Gurus604.7★ (439)18 mi
38Expert Heating & Air Conditioning Mountain View CA605.0★ (34)5 mi
39Trio Heating & Air Hayward605.0★ (148)15 mi
40Bay Area Climate Control604.9★ (162)15 mi
41Freon HVAC, Electrical & Appliance605.0★ (166)16 mi
42Fuse Service604.9★ (217)17 mi
43Green Mechanics Heating & AC Repair Specialists604.9★ (74)10 mi
44Sugar Bear Home Services604.9★ (369)20 mi
45Eco Air Cooling and Heating595.0★ (28)5 mi
46Techpro Heating & Cooling594.8★ (60)8 mi
47Best HVAC594.8★ (153)15 mi
48Freon INC595.0★ (16)2 mi
49Skyrocket HVAC & Appliance Repair595.0★ (124)15 mi
50Golden Comfort AC & Heating Repair595.0★ (85)13 mi

How we ranked emergency HVAC contractors in Palo Alto

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 Palo Alto: questions

Which HVAC contractors in Palo Alto are open 24/7?

25 on this list post 24/7 hours, including Fuse service, Service Champions, Heating And Air Experts - Affordable HVAC Contractor in Fremont, California, Fuse HVAC, Refrigeration, Electrical & Plumbing and TRIO Heating, Air & Plumbing.

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

Fuse service is #1, with a CR Score of 65 out of 100 on emergency weights.

How are emergency HVAC contractors in Palo Alto 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 Palo Alto

  1. October 2026: CR Scores recalculated for 548 hvac contractors serving Palo Alto.
  2. October 2026: 6 duplicate listings merged.

More emergency and heating and cooling pages