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ContractorsRanked

Best HVAC Contractors in Altadena, CA (2026)

1,520 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Altadena: Purified Air Heating and Air Conditioning, Inc, CR Score 91/100; 5.0★ from 251 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Brody Pennell Heating & Air Conditioning, posts 24/7 hours; ranked #2 of 1,520.

  3. 2

    Most-reviewed: Brody Pennell Heating & Air Conditioning, 4,606 Google reviews at 4.9★, the most of 1,520 ranked; ranked #2.

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

1,520 Altadena HVAC contractors are ranked here by CR Score, from 8 published factors. 581 are open 24/7, 1,189 open Saturdays and 927 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,520 rated businesses.

Top 10 HVAC contractors in Altadena at a glance

Top 10 HVAC contractors in Altadena at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Purified Air Heating and Air Conditioning, Inc915.0★ (251)Pasadena, 3 mi away24/7Overall
2Brody Pennell Heating & Air Conditioning914.9★ (4,606)Los Angeles, 18 mi away24/7Emergencies, Most reviews
3JW Plumbing, Heating and Air914.8★ (2,541)Los Angeles, 13 mi away24/7—
4Aire Serv of Pasadena904.9★ (394)Arcadia, 7 mi away24/7—
5Monkey Wrench Plumbing, Heating, Air & Electric904.9★ (275)Glendale, 6 mi away24/7—
6Precise Air Systems Inc.904.9★ (434)Los Angeles, 9 mi away24/7—
7American AC Heat Plumbing894.9★ (3,299)Hawthorne, 22 mi away24/7—
8Dr Air Conditioning And Heating895.0★ (94)Pasadena, 5 mi away24/7—
9Service Hero Plumbing, HVAC, and Electrical894.8★ (1,506)Covina, 16 mi away24/7—
10Most Valuable Plumber894.8★ (142)Pasadena, 3 mi away24/7—

The 1,520 best HVAC contractors in Altadena, ranked

Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  12. #12 Mor Air

    Based in North Hollywood, 15 mi away

    88/100CR Score

    Ranked #12 because of its Google rating and availability: 5.0★ from 295 Google reviews, open 24/7.

    • 5.0★ from 295 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    11661 Saticoy St, North Hollywood, CA 91605
    View profile for Mor Air(818) 287-0457

  21. #21 Rowland Air

    Based in Santa Clarita, 24 mi away

    88/100CR Score

    Ranked #21 because of its Google rating and availability: 4.9★ from 1,810 Google reviews, open 24/7.

    • 4.9★ from 1,810 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    17007 Sierra Hwy, Canyon Country, CA 91351
    View profile for Rowland Air(661) 550-0335

HVAC contractors ranked #26 to #50

#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 1,520 ranked HVAC contractors here; the rest are on their profiles.

HVAC contractors in Altadena, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Power Pro Plumbing Heating & Air874.8★ (2,576)25 mi
27Blueberry Air875.0★ (140)14 mi
28Adeedo Plumbing, Drains & Heating874.7★ (2,821)23 mi
29C&M Air Conditioning And Heating Inc875.0★ (47)7 mi
30Los Angeles Air Department874.9★ (399)19 mi
31VHP AIR CONDITIONING & HEATING, Inc.875.0★ (78)11 mi
32Purified air heating and Air Conditioning Inc875.0★ (100)13 mi
33ASH Purification Heating and Air Conditioning874.9★ (51)7 mi
34HVAC Contractor - American Cool and Heat874.9★ (61)8 mi
35Duarte Heating & Air Conditioning875.0★ (64)10 mi
36Manny's Heating & Air Conditioning874.9★ (183)15 mi
37Orange Coast Plumbing875.0★ (276)20 mi
38Service Champions Plumbing, Heating & AC874.9★ (667)23 mi
39AARD Mechanical Air Conditioning & Heating874.9★ (547)22 mi
40High Tech HVAC - AC Repair & Installation Services in Los Angeles, Ventura County, Orange County, Riverside County864.8★ (95)10 mi
41Ace Pelizon Plumbing, Heating & Cooling864.7★ (426)16 mi
42Titan Air Conditioning864.9★ (439)22 mi
43AC & HVAC Repair864.8★ (112)12 mi
44Fleetwell Air Conditioning, Heating, and Plumbing864.9★ (488)23 mi
45CrackerJack Air and Plumbing Pros865.0★ (172)20 mi
46Robert Hall & Sons, Heating & Air Conditioning865.0★ (27)7 mi
47Western Air Mechanical864.9★ (251)19 mi
48HVAC Solutions Heating & AC Repair864.7★ (41)In Altadena
49Airintel HVAC Inc865.0★ (191)21 mi
50Mega Clean Air865.0★ (223)22 mi

Also serving Altadena

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.

Unranked HVAC contractors serving Altadena
BusinessGoogle ratingDistance
AC Cool - Home Appliance Repair Services5.0★ (1)In Altadena
Air Conditioning Glendale5.0★ (2)7 mi
Alliance Professional HVAC5.0★ (2)7 mi
Altadena Handyman LLC4.9★ (43)In Altadena
Altadena Pros5.0★ (4)In Altadena
Arcadias Heating and Air Conditioning5.0★ (2)8 mi
Ayman Ibrahim HVAC Contractor5.0★ (84)14 mi
Casey & Sons Plumbing & Electric4.9★ (99)In Altadena
Coastal Comfort Heating and AC Repair3.0★ (2)8 mi
ELITE ELECTRIC & HVAC5.0★ (2)8 mi
Green CityIn Altadena
Green Planet Heating and Air5.0★ (68)11 mi
Home Tech Air Systems5.0★ (2)8 mi
Jose Cruz Plumbing Heating Electrical5.0★ (2)8 mi
Kahn Air Conditioning4.9★ (1,583)19 mi
Kav-Air Air Conditioning & HeatingIn Altadena
Priority Remodeling3.0★ (2)7 mi
The Plumbing Expert4.8★ (42)In Altadena
Tran Services - HVAC | Food Equipment5.0★ (2)5 mi
Vahe's Air-Conditioning & Heating & Refrigeration5.0★ (1)In Altadena

How much do HVAC contractors cost in Altadena?

National price ranges in USD, not adjusted for Altadena. Each row names its basis and the month we checked it.

How much do HVAC contractors cost in Altadena?
JobLowTypicalHighBasisChecked
AC replacement$3,887$5,978$8,073Per system, installed (unit plus labor); typical range of customer-reported jobs. US national rangeOctober 2026
Furnace replacement$2,823$4,814$6,896Per system, installed; typical range of customer-reported jobs. US national rangeOctober 2026

How to check an HVAC contractor's license in California

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).

  1. Search the business name or license number on the Contractors State License Board (CSLB) license lookup.
  2. Check that the status is active and the name matches the contract or truck.
  3. Ask for proof of insurance before work starts.

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

When to hire an HVAC contractor in California

California's HVAC demand peaks during summer heat waves and the first cold snaps. Spring and fall are the easiest times to book maintenance.

How we ranked Altadena HVAC contractors

We scored 1,520 Altadena 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Altadena data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

HVAC contractors in Altadena: frequently asked questions

Who is the best HVAC contractor in Altadena?

By CR Score, the highest-ranked HVAC contractor in Altadena, CA is Purified Air Heating and Air Conditioning, Inc with a CR Score of 91/100. It has 5.0★ from 251 Google reviews. It is open 24/7. Brody Pennell Heating & Air Conditioning (#2) and JW Plumbing, Heating and Air (#3) follow. We ranked 1,520 HVAC contractors on 8 factors, last updated October 22, 2026.

How many HVAC contractors are there in Altadena?

ContractorsRanked ranks 1,520 HVAC contractors serving Altadena, CA. 2 of them are based in Altadena; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which HVAC contractors in Altadena are open 24/7?

581 ranked HVAC contractors in Altadena post 24/7 hours. The highest-ranked are Purified Air Heating and Air Conditioning, Inc (#1), Brody Pennell Heating & Air Conditioning (#2) and JW Plumbing, Heating and Air (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Altadena work on weekends?

1,189 of 1,520 ranked HVAC contractors post Saturday hours and 927 post Sunday hours. The highest-ranked open Saturdays are Purified Air Heating and Air Conditioning, Inc (#1), Brody Pennell Heating & Air Conditioning (#2) and JW Plumbing, Heating and Air (#3). Posted hours are office hours; crews may book weekend jobs separately.

How do I check an HVAC contractor's license in California?

In California, Contractors State License Board (CSLB) handles licensing and covers C-20 Warm-Air Heating, Ventilating and Air-Conditioning contractor license. Search the business or license number at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx. Jobs of $1,000 or more in labor and materials (from January 1, 2025).

How much does ac replacement cost in Altadena?

AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Altadena. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Altadena HVAC contractors have?

The median Google rating among 1,520 rated HVAC contractors in Altadena is 4.9★, with a median of 18 reviews. Brody Pennell Heating & Air Conditioning has the most, 4,606 reviews, and ranks #2. We adjust ratings for review count, so a few five-star reviews cannot top the list.

When is the best time to hire an HVAC contractor in Altadena?

California's HVAC demand peaks during summer heat waves and the first cold snaps. Spring and fall are the easiest times to book maintenance.

Update log for Altadena

  1. October 2026: CR Scores recalculated for 1,520 hvac contractors serving Altadena.
  2. October 2026: 9 duplicate listings merged.

More HVAC contractors and Altadena pages

Other trades in Altadena