1,096 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in San Dimas: Service Hero Plumbing, HVAC, and Electrical, CR Score 64/100; 4.8★ from 1,506 Google reviews; open 24/7.
Best for emergencies (open 24/7): Steve's Five Star Service, posts 24/7 hours; ranked #2 of 1,096.
Most-reviewed: All Pro Cooling, Heating, Plumbing & Electrical, 7,425 Google reviews at 4.8★, the most of 1,096 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,096 San Dimas HVAC contractors are ranked here by CR Score, from ten published factors. 374 are open 24/7, 829 open Saturdays and 565 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,096 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Service Hero Plumbing, HVAC, and Electrical | 64 | 4.8★ (1,506) | Covina, 4 mi away | 24/7 | Overall |
| 2 | Steve's Five Star Service | 64 | 4.9★ (1,292) | Upland, 7 mi away | 24/7 | Emergencies |
| 3 | All Pro Cooling, Heating, Plumbing & Electrical | 64 | 4.8★ (7,425) | Ontario, 15 mi away | 24/7 | Most reviews |
| 4 | Klaus & Sons Plumbing, Heating & Air Conditioning | 64 | 4.9★ (977) | Montclair, 7 mi away | 24/7 | — |
| 5 | Western Air Mechanical | 63 | 4.9★ (251) | San Dimas | 24/7 | — |
| 6 | Metz Air Control | 63 | 4.9★ (969) | Chino, 10 mi away | 24/7 | — |
| 7 | Rooter Hero Plumbing & Air | 63 | 4.8★ (802) | Montclair, 6 mi away | 24/7 | — |
| 8 | Canyon City Air | 63 | 5.0★ (122) | San Dimas | 24/7 | — |
| 9 | RC Air Heating & Air Conditioning Service | 62 | 4.9★ (705) | Rancho Cucamonga, 11 mi away | 24/7 | — |
| 10 | Home Comfort USA | 62 | 4.8★ (2,813) | Anaheim, 17 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 1,506 Google reviews, listed on Google as “HVAC contractor”.
Based in Upland, 7 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 1,292 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Ontario, 15 mi away
Ranked #3 because of its Google rating and review volume: 4.8★ from 7,425 Google reviews, the most in San Dimas.
Based in Montclair, 7 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 977 Google reviews, listed on Google as “HVAC contractor”.
Based in San Dimas
Ranked #5 because of its Google rating and trade focus: 4.9★ from 251 Google reviews, listed on Google as “HVAC contractor”.
Based in Chino, 10 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 969 Google reviews, listed on Google as “Air conditioning repair service”.
Based in Montclair, 6 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 802 Google reviews, listed on Google as “HVAC contractor”.
Based in San Dimas
Ranked #8 because of its Google rating and trade focus: 5.0★ from 122 Google reviews, listed on Google as “HVAC contractor”.
Based in Rancho Cucamonga, 11 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 705 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Anaheim, 17 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 2,813 Google reviews, listed on Google as “HVAC contractor”.
Based in Covina, 5 mi away
Ranked #11 because of its Google rating and trade focus: 4.7★ from 426 Google reviews, listed on Google as “HVAC contractor”.
Based in Brea, 13 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 6,978 Google reviews, listed on Google as “HVAC contractor”.
Based in Brea, 14 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 547 Google reviews, listed on Google as “HVAC contractor”.
Based in Anaheim, 17 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 995 Google reviews, listed on Google as “HVAC contractor”.
Based in Corona, 19 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 1,325 Google reviews, listed on Google as “HVAC contractor”.
Based in Anaheim, 17 mi away
Ranked #16 because of its Google rating and trade focus: 4.7★ from 2,250 Google reviews, listed on Google as “HVAC contractor”.
Based in Anaheim, 18 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 1,091 Google reviews, listed on Google as “HVAC contractor”.
Based in Upland, 8 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 143 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Anaheim, 17 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 1,899 Google reviews, listed on Google as “HVAC contractor”.
Based in Chino, 9 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 392 Google reviews, listed on Google as “HVAC contractor”.
Based in Arcadia, 13 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 394 Google reviews, listed on Google as “HVAC contractor”.
Based in Corona, 20 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 1,213 Google reviews, listed on Google as “HVAC contractor”.
Based in Yorba Linda, 17 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 764 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Brea, 14 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 439 Google reviews, listed on Google as “HVAC contractor”.
Based in Glendora, 3 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 655 Google reviews, listed on Google as “HVAC contractor”.
#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 1,096 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 |
|---|---|---|
| ABR Air Conditioning, Heating, and Refrigeration | 5.0★ (2) | 7 mi |
| Accurate Electric, Plumbing, Heating and Air | 4.9★ (951) | 5 mi |
| Apex Covina HVAC Pros | 5.0★ (25) | 5 mi |
| Avis Plumbing and Air | 4.7★ (438) | 18 mi |
| Ayman Ibrahim HVAC Contractor | 5.0★ (84) | 9 mi |
| Ductless Guru | In San Dimas | |
| M.A. Ogg Heating & Air Conditioning, Inc. | 3.0★ (2) | 6 mi |
| M&B Heating And Cooling | 5.0★ (32) | 6 mi |
| Mac Refrigeration & Air Conditioning | 3.0★ (2) | 6 mi |
| Mannys Heating and Air Conditioning | In San Dimas | |
| Meza's Hvac | 5.0★ (2) | 8 mi |
| Premier Air Conditioning | In San Dimas | |
| Premier Construction Glendora | 5.0★ (2) | 4 mi |
| Professional Heating & Air | 3.0★ (2) | In San Dimas |
| Sinclair Air Systems | 4.7★ (35) | 2 mi |
| Valley Air Conditioning & Heating | 5.0★ (2) | 6 mi |
| Viking Air Inc. | 5.0★ (2) | 7 mi |
| West Covina Hvac Services | 5.0★ (2) | 8 mi |
| West-Tech Mechanical Inc | 3.0★ (2) | 8 mi |
| Yarmouth Heating & Cooling | 5.0★ (27) | 5 mi |
National price ranges in USD, not adjusted for San Dimas. 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 1,096 San Dimas HVAC contractors on ten 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. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, 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 San Dimas data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |