55 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in San Luis Obispo: Wighton's Electric, Plumbing, Heating, and Air, CR Score 67/100; 4.7★ from 1,714 Google reviews; open 24/7.
Best for emergencies (open 24/7): Monarch Air Conditioning, Heating & Electrical - SLO, posts 24/7 hours; ranked #2 of 55.
Most-reviewed: Bee Right There Heating & Air, 878 Google reviews at 4.9★, the most of 55 ranked after Wighton's Electric, Plumbing, Heating, and Air; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
55 San Luis Obispo HVAC contractors are ranked here by CR Score, from ten published factors. 14 are open 24/7, 26 open Saturdays and 19 open Sundays, based on posted hours. The median Google rating is 4.8★ across 55 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Wighton's Electric, Plumbing, Heating, and Air | 67 | 4.7★ (1,714) | San Luis Obispo | 24/7 | Overall |
| 2 | Monarch Air Conditioning, Heating & Electrical - SLO | 65 | 4.6★ (653) | San Luis Obispo | 24/7 | Emergencies |
| 3 | Total Plumbing Heating & Air | 61 | 4.4★ (71) | San Luis Obispo | 24/7 | — |
| 4 | Comfort Air of SLO | 60 | 5.0★ (18) | San Luis Obispo | 24/7 | — |
| 5 | Trinity HVAC Solutions | 59 | 4.8★ (13) | Arroyo Grande, 2 mi away | 24/7 | — |
| 6 | Bee Right There Heating & Air | 58 | 4.9★ (878) | Atascadero, 15 mi away | — | Most reviews |
| 7 | Air Rite | 57 | 4.6★ (58) | Atascadero, 15 mi away | 24/7 | — |
| 8 | Pacific Coast Comfort | 57 | 4.6★ (136) | San Luis Obispo | — | — |
| 9 | SeaBay Building Group | 57 | 5.0★ (3) | San Luis Obispo | 24/7 | — |
| 10 | On Point Plumbing Heating & Air Conditioning Inc. | 57 | 4.9★ (88) | Paso Robles, 25 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 in San Luis Obispo
Based in San Luis Obispo
Ranked #1 because of its Google rating and review volume: 4.7★ from 1,714 Google reviews, the most in San Luis Obispo.
Based in San Luis Obispo
Ranked #2 because of its Google rating and trade focus: 4.6★ from 653 Google reviews, listed on Google as “HVAC contractor”.
Based in San Luis Obispo
Ranked #3 because of its Google rating and trade focus: 4.4★ from 71 Google reviews, listed on Google as “HVAC contractor”.
Based in San Luis Obispo
Ranked #4 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “HVAC contractor”.
Based in Arroyo Grande, 2 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 13 Google reviews, listed on Google as “HVAC contractor”.
Based in Atascadero, 15 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 878 Google reviews, listed on Google as “HVAC contractor”.
Based in Atascadero, 15 mi away
Ranked #7 because of its Google rating and trade focus: 4.6★ from 58 Google reviews, listed on Google as “HVAC contractor”.
Based in San Luis Obispo
Ranked #8 because of its Google rating and trade focus: 4.6★ from 136 Google reviews, listed on Google as “HVAC contractor”.
Based in San Luis Obispo
Ranked #9 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “HVAC contractor”.
Based in Paso Robles, 25 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 88 Google reviews, listed on Google as “HVAC contractor”.
Based in San Luis Obispo
Ranked #11 because of its Google rating and trade focus: 4.5★ from 24 Google reviews, listed on Google as “HVAC contractor”.
Based in Morro Bay, 13 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 187 Google reviews, listed on Google as “HVAC contractor”.
Based in Atascadero, 11 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “HVAC contractor”.
Based in Paso Robles, 24 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 45 Google reviews, listed on Google as “HVAC contractor”.
Based in Paso Robles, 25 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 61 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Nipomo, 15 mi away
Ranked #16 because of its Google rating and trade focus: 4.7★ from 46 Google reviews, listed on Google as “HVAC contractor”.
Based in Paso Robles, 24 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 714 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Paso Robles, 24 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “HVAC contractor”.
Based in Paso Robles, 20 mi away
Ranked #19 because of its Google rating and trade focus: 4.2★ from 46 Google reviews, listed on Google as “HVAC contractor”.
Based in Paso Robles, 7 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 33 Google reviews, listed on Google as “HVAC contractor”.
Based in San Luis Obispo
Ranked #21 because of its Google rating and trade focus: 3.6★ from 7 Google reviews, listed on Google as “Air conditioning contractor”.
Based in San Luis Obispo
Ranked #22 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Nipomo, 21 mi away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 13 Google reviews, listed on Google as “HVAC contractor”.
Based in Morro Bay, 12 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 17 Google reviews, listed on Google as “HVAC contractor”.
Based in Paso Robles, 6 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 5 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 55 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 San Luis Obispo. 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 55 San Luis Obispo 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 Luis Obispo 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 |