482 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Bostonia: Mauzy Cooling, Heating, Plumbing, and Electrical, CR Score 94/100; 4.8★ from 4,710 Google reviews; open 24/7.
Best for emergencies (open 24/7): Anderson Plumbing, Heating & Air, posts 24/7 hours; ranked #2 of 482.
Most-reviewed: Anderson Plumbing, Heating & Air, 6,056 Google reviews at 4.8★, the most of 482 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
482 Bostonia HVAC contractors are ranked here by CR Score, from 8 published factors. 142 are open 24/7, 353 open Saturdays and 257 open Sundays, based on posted hours. The median Google rating is 5.0★ across 482 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mauzy Cooling, Heating, Plumbing, and Electrical | 94 | 4.8★ (4,710) | El Cajon, 2 mi away | 24/7 | Overall |
| 2 | Anderson Plumbing, Heating & Air | 94 | 4.8★ (4,443) | El Cajon, 3 mi away | 24/7 | Emergencies |
| 3 | Precision Temperature | 93 | 4.9★ (1,014) | Lakeside, 3 mi away | 24/7 | — |
| 4 | Anderson Plumbing, Heating & Air | 92 | 4.8★ (6,056) | San Diego, 12 mi away | 24/7 | Most reviews |
| 5 | Bill Howe Plumbing, Heating & Air, Restoration & Flood Services | 92 | 4.8★ (4,875) | San Diego, 11 mi away | 24/7 | — |
| 6 | Maximum Comfort Heating and AC Repair | 91 | 5.0★ (200) | El Cajon, 2 mi away | 24/7 | — |
| 7 | Comfort Bros Heating Air Plumbing & Electrical | 91 | 4.9★ (424) | Lakeside, 4 mi away | 24/7 | — |
| 8 | Air Temperature Specialists | 91 | 4.9★ (264) | El Cajon, 2 mi away | 24/7 | — |
| 9 | Friar's Plumbing Heating and AC Repair | 91 | 5.0★ (160) | El Cajon, 2 mi away | 24/7 | — |
| 10 | Same Day Heating, Cooling, Plumbing | 91 | 4.8★ (1,658) | San Diego, 11 mi away | 24/7 | — |
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.
Ranked #1 in Bostonia
Based in El Cajon, 2 mi away
Ranked #1 because of its Google rating and availability: 4.8★ from 4,710 Google reviews, open 24/7.
Based in El Cajon, 3 mi away
Ranked #2 because of its Google rating and availability: 4.8★ from 4,443 Google reviews, open 24/7.
Based in Lakeside, 3 mi away
Ranked #3 because of its Google rating and availability: 4.9★ from 1,014 Google reviews, open 24/7.
Based in San Diego, 12 mi away
Ranked #4 because of its Google rating and availability: 4.8★ from 6,056 Google reviews, open 24/7.
Based in San Diego, 11 mi away
Ranked #5 because of its Google rating and availability: 4.8★ from 4,875 Google reviews, open 24/7.
Based in El Cajon, 2 mi away
Ranked #6 because of its Google rating and availability: 5.0★ from 200 Google reviews, open 24/7.
Based in Lakeside, 4 mi away
Ranked #7 because of its Google rating and availability: 4.9★ from 424 Google reviews, open 24/7.
Based in El Cajon, 2 mi away
Ranked #8 because of its Google rating and availability: 4.9★ from 264 Google reviews, open 24/7.
Based in El Cajon, 2 mi away
Ranked #9 because of its Google rating and availability: 5.0★ from 160 Google reviews, open 24/7.
Based in San Diego, 11 mi away
Ranked #10 because of its Google rating and availability: 4.8★ from 1,658 Google reviews, open 24/7.
Based in El Cajon, 3 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 1,836 Google reviews, listed on Google as “HVAC contractor”.
Based in San Diego, 15 mi away
Ranked #12 because of its Google rating and availability: 4.9★ from 1,612 Google reviews, open 24/7.
Based in El Cajon, 2 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 801 Google reviews, listed on Google as “HVAC contractor”.
Based in Lakeside, 4 mi away
Ranked #14 because of its Google rating and availability: 4.9★ from 201 Google reviews, open 24/7.
Based in El Cajon, 2 mi away
Ranked #15 because of its Google rating and availability: 4.9★ from 131 Google reviews, open 24/7.
Based in El Cajon, 2 mi away
Ranked #16 because of its Google rating and availability: 5.0★ from 86 Google reviews, open 24/7.
Based in San Diego, 12 mi away
Ranked #17 because of its Google rating and availability: 4.9★ from 626 Google reviews, open 24/7.
Based in La Mesa, 3 mi away
Ranked #18 because of its Google rating and availability: 4.9★ from 143 Google reviews, open 24/7.
Based in San Diego, 14 mi away
Ranked #19 because of its Google rating and availability: 4.9★ from 815 Google reviews, open 24/7.
Based in La Mesa, 7 mi away
Ranked #20 because of its Google rating and availability: 4.9★ from 206 Google reviews, open 24/7.
Based in El Cajon, 3 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 749 Google reviews, listed on Google as “HVAC contractor”.
Based in San Diego, 12 mi away
Ranked #22 because of its Google rating and availability: 5.0★ from 203 Google reviews, open 24/7.
Based in El Cajon, 2 mi away
Ranked #23 because of its Google rating and trade focus: 4.6★ from 3,124 Google reviews, listed on Google as “HVAC contractor”.
Based in Chula Vista, 11 mi away
Ranked #24 because of its Google rating and availability: 4.9★ from 268 Google reviews, open 24/7.
Based in Alpine, 11 mi away
Ranked #25 because of its Google rating and availability: 5.0★ from 167 Google reviews, open 24/7.
#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 482 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.
National price ranges in USD, not adjusted for Bostonia. 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 482 Bostonia 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.
| Factor | Weight | Computed from | In Bostonia data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |