| A M Wighton And Sons DBA A & J Refrigeration | James Sandborn Pape | — | (805) 543 7458 | HVAC | San Luis Obispo · San Luis Obispo County | — | — |
| Above The Grade Heating And Air Conditioning | Martin Lewis Lagomarsino | — | (805) 470 9205 | HVAC | Atascadero · San Luis Obispo County | — | — |
| Adam's Heating & Cooling | Adam's Heating & Cooling | — | (805) 550 4932 | HVAC | Grover Beach · San Luis Obispo County | — | — |
| Air - Left Refrigeration & Heating | Richard James Jr Avery | — | (805) 441 0761 | HVAC | Atascadero · San Luis Obispo County | — | — |
| Air Care Heating And Air Conditioning | David Allen Andreatta | — | (805) 717 8131 | HVAC | Nipomo · San Luis Obispo County | — | — |
| Air Champs | Air Champs | — | (408) 603 8784 | HVAC | Paso Robles · San Luis Obispo County | — | — |
| Air-rite Refrigeration | James Arne Johansen | — | (805) 461 3033 | HVAC | Atascadero · San Luis Obispo County | — | — |
| Airway Heating & Air | Kenneth Edward Ii Rice | — | (805) 710 7851 | HVAC | Nipomo · San Luis Obispo County | — | — |
| All Systems Heating And Air INC | Gregory Dean Cockerill | — | (805) 703 3464 | HVAC | Templeton · San Luis Obispo County | — | — |
| All Things Mechanical INC | Scott Richard Tirre | — | (805) 441 1752 | HVAC | Nipomo · San Luis Obispo County | — | — |
| Alltech Services INC | Josh Foster Backlin | info@alltechservices.com | (805) 239 0300 | HVAC | Atascadero · San Luis Obispo County | — | — |
| Alpine Refrigeration Heating & Cooling | Kenneth Allen Kirkpatrick | — | (805) 934 1578 | HVAC | Nipomo · San Luis Obispo County | — | — |
| Anton Refrigeration | Anton Refrigeration | — | (805) 709 2626 | HVAC | Pismo Beach · San Luis Obispo County | — | — |
| Avenridge HVAC Repair San Luis Obispo | Avenridge HVAC Repair San Luis Obispo | — | (805) 360-6456 | HVAC | San Luis Obispo · San Luis Obispo County | — | — |
| Beck's Mechanical Systems | Walter George Beck | walt@becksmechanicalsystems.com | (805) 432 3167 | HVAC | Paso Robles · San Luis Obispo County | — | — |
| Bee Right There Heating & Air | Michael Ray Wiley | — | (805) 466 2237 | HVAC | Atascadero · San Luis Obispo County | — | — |
| Bennett And Sons Heating And Air INC | Paul Wesley Jr Bennett | — | (805) 226 0601 | HVAC | Paso Robles · San Luis Obispo County | — | — |
| Boneso Brothers Construction INC | Steve Craig Boneso | — | (805) 227 4450 | HVAC | Paso Robles · San Luis Obispo County | — | — |
| Cal Coast Builders | Cal Coast Builders | — | (805) 859 4057 | HVAC | Atascadero · San Luis Obispo County | — | — |
| California Heating And Air Conditioning | Paul Wesley Jr Bennett | — | (805) 237 8566 | HVAC | Paso Robles · San Luis Obispo County | — | — |
| Central Coast Heating And Air INC | Jason Flint Frost | — | (805) 888 7660 | HVAC | Nipomo · San Luis Obispo County | — | — |
| Central Coast Mechanical INC | Robert Henry Baier | — | (805) 975 5838 | HVAC | Paso Robles · San Luis Obispo County | — | — |
| Central Coast Straight Line Enterprises INC | Sydney William Goldis | — | (805) 975 5049 | HVAC | Paso Robles · San Luis Obispo County | — | — |
| Chill Time Air Conditioning & Heating | Bobby Keith Caton | — | (805) 769 6803 | HVAC | Paso Robles · San Luis Obispo County | — | — |
| Cienaga Services INC | Alarcon Gabriel | — | (805) 481 5310 | HVAC | Pismo Beach · San Luis Obispo County | — | — |
| Coast Heating & Air | Coast Heating & Air | — | (805) 748 5182 | HVAC | Los Osos · San Luis Obispo County | — | — |
| Coastal Air HVAC Solutions LLC | Donald David Jr Witters | coastalairhvacsolutions@gmail.com | (949) 942 2070 | HVAC | Los Osos · San Luis Obispo County | — | — |
| Comfort Living | Comfort Living | — | (805) 391 0863 | HVAC | Atascadero · San Luis Obispo County | — | — |
| Crafco Services | Donald Noil Crafton | — | (805) 710 2324 | HVAC | Grover Beach · San Luis Obispo County | — | — |
| Design Air Heating And Air Conditioning | Ethan Vail Pogue | — | (805) 225 1911 | HVAC | Morro Bay · San Luis Obispo County | — | — |
| Doc Miller's Heating And Air | Doc Miller's Heating And Air | — | (805) 296 1025 | HVAC | Paso Robles · San Luis Obispo County | — | — |
| Eco Air Refrigeration | Scott Richard Tirre | — | (805) 441 1752 | HVAC | Nipomo · San Luis Obispo County | — | — |
| Engle's Plumbing Heating & Air | Engle's Plumbing Heating & Air | — | (805) 712 7629 | HVAC | Templeton · San Luis Obispo County | — | — |
| Fenvell HVAC Repair San Luis Obispo | Fenvell HVAC Repair San Luis Obispo | — | (805) 360-6458 | HVAC | San Luis Obispo · San Luis Obispo County | — | — |
| Golden Bay Mechanical Services INC | Michael Steven Atiles | — | (805) 481 1911 | HVAC | Pismo Beach · San Luis Obispo County | — | — |
| Goldsmith Mechanical INC | Joshua Euel Goldsmith | — | (805) 610 5327 | HVAC | Paso Robles · San Luis Obispo County | — | — |
| Goose Family Heating & Air | Kevin James Smith | goose@goosefamilyhvac.com | (805) 635 5488 | HVAC | Paso Robles · San Luis Obispo County | — | — |
| Greg Peterson General Contractor | Greg Peterson General Contractor | — | (805) 801 6959 | HVAC | Atascadero · San Luis Obispo County | — | — |
| Gregory Dean Cockerill DBA All Systems Heating And Air Conditioni | Gregory Dean Cockerill | — | (805) 703 3464 | HVAC | Atascadero · San Luis Obispo County | — | — |
| Haga Refrigeration | Haga Refrigeration | — | (805) 441 9737 | HVAC | San Luis Obispo · San Luis Obispo County | — | — |