| 808 Climate Control LLC | 808 Climate Control LLC | contact@climatecontrol.com | (519) 322-2515 | HVAC | Kaneohe · Honolulu County | — | — |
| A/c Warehouse | A/c Warehouse | info@acwarehousehi.com | (808) 633-8255 | HVAC | Kahului · Maui County | — | — |
| A/c Warehouse | A/c Warehouse | info@acwarehousehi.com | (808) 545-3084 | HVAC | Honolulu · Honolulu County | — | — |
| AC Cleaning Hawaii | AC Cleaning Hawaii | — | (808) 216-6070 | HVAC | Honolulu · Honolulu County | — | — |
| Acs Air Conditioning Specialists Inc. | Acs Air Conditioning Specialists Inc. | — | (808) 329-2996 | HVAC | Kailua-Kona · Hawaii County | — | — |
| Admor HVAC Producs INC - Kona Big Island | Admor HVAC Producs INC - Kona Big Island | — | (808) 731-3778 | HVAC | Kailua-Kona · Hawaii County | — | — |
| Admor HVAC Products Inc. - Kauai | Admor HVAC Products Inc. - Kauai | — | (808) 632-2665 | HVAC | Lihue · Kauai County | — | — |
| Admor HVAC Products Inc. - Maui | Admor HVAC Products Inc. - Maui | — | (808) 446-8900 | HVAC | Kahului · Maui County | — | — |
| Advanced A/c Contracting | Advanced A/c Contracting | — | (808) 847-4814 | HVAC | Honolulu · Honolulu County | — | — |
| Affordable Appliance | Affordable Appliance | — | (808) 212-9612 | HVAC | Kailua-Kona · Hawaii County | — | — |
| Air Central LLC | Air Central LLC | jesse@aircentral.com | (763) 208-2840 | HVAC | Honolulu · Honolulu County | — | — |
| Air Conditioning Experts LLC | Air Conditioning Experts LLC | airconditioningexpertshi@gmail.com | (808) 732-2236 | HVAC | Honolulu · Honolulu County | — | — |
| Air Engineering Company Inc. | Air Engineering Company Inc. | info@airengineering.com | (800) 558-4318 | HVAC | Honolulu · Honolulu County | — | — |
| Air Masters INC | Air Masters INC | info@air-masters.com | (808) 848-2473 | HVAC | Honolulu · Honolulu County | — | — |
| Air Source Air Conditioning | Air Source Air Conditioning | airsourceac@yahoo.com | (808) 300-4651 | HVAC | Honolulu · Honolulu County | — | — |
| Alaka'i Mechanical Corporation | Alaka'i Mechanical Corporation | — | (808) 834-1085 | HVAC | Honolulu · Honolulu County | — | — |
| Alltemp | Alltemp | — | (808) 871-6723 | HVAC | Kahului · Maui County | — | — |
| Aloha AC Services LLC | Aloha AC Services LLC | aloha.ac.hi@gmail.com | (808) 748-9787 | HVAC | Honolulu · Honolulu County | — | — |
| Aloha Air Conditioning | Aloha Air Conditioning | — | (855) 882-5642 | HVAC | Kailua-Kona · Hawaii County | — | — |
| Aloha Air INC | Aloha Air INC | hello@rfuenzalida.com | — | HVAC | Captain Cook · Hawaii County | — | — |
| Aloha Sheet Metal | Aloha Sheet Metal | info@alohasheetmetal.com | (808) 893-2288 | HVAC | Kihei · Maui County | — | — |
| American Air Conditioning | American Air Conditioning | — | (808) 847-0851 | HVAC | Honolulu · Honolulu County | — | — |
| Associated Sheetmetal INC | Associated Sheetmetal INC | info@associatedsheetmetal.com | (250) 652-6628 | HVAC | Waipahu · Honolulu County | — | — |
| Big Island Mechanical LLC | Big Island Mechanical LLC | — | (808) 775-0942 | HVAC | Waimea · Hawaii County | — | — |
| Calvin's Air Conditioning & Refrigeration | Calvin's Air Conditioning & Refrigeration | — | (808) 371-0074 | HVAC | Aiea · Kalawao County | — | — |
| Cb Air Conditioning And Mechanical LLC | Cb Air Conditioning And Mechanical LLC | admin@cbacmechanical.com | — | HVAC | Mountain View · Hawaii County | — | — |
| Certified Air Conditioning - Maui | Certified Air Conditioning - Maui | info@certifiedairmaui.com | (808) 727-2271 | HVAC | Kahului · Maui County | — | — |
| Coldtech 2010 LLC | Coldtech 2010 LLC | — | (856) 228-8145 | HVAC | Kekaha · Kauai County | — | — |
| Construction Development INC | Construction Development INC | interested@domainmarket.com | (888) 694-6735 | HVAC | Kahului · Maui County | — | — |
| Cool Air INC | Cool Air INC | — | (904) 389-3646 | HVAC | Waipahu · Honolulu County | — | — |
| Cooling Hawaii LLC | Cooling Hawaii LLC | info@coolinghawaii.com | (808) 727-2777 | HVAC | Puunene · Maui County | — | — |
| Cooling Solutions Hawaii LLC | Cooling Solutions Hawaii LLC | info@coolingsolutionshawaii.com | (808) 638-3633 | HVAC | Ewa Beach · Honolulu County | — | — |
| Cosco Air Conditioning & Refrigeration | Cosco Air Conditioning & Refrigeration | — | (808) 871-6285 | HVAC | Kahului · Maui County | — | — |
| Cosco Air Conditioning & Refrigeration | Cosco Air Conditioning & Refrigeration | — | (808) 632-2153 | HVAC | Lihue · Kauai County | — | — |
| Cosco Air Conditioning & Refrigeration | Cosco Air Conditioning & Refrigeration | — | (808) 845-2234 | HVAC | Honolulu · Honolulu County | — | — |
| Craig's Air Conditioning | Craig's Air Conditioning | service@craigsair.com | (808) 682-0970 | HVAC | Kona · Hawaii County | — | — |
| Custom Cooling Inc. | Custom Cooling Inc. | service@customcoolingkauai.com | (808) 635-4112 | HVAC | Lihue · Kauai County | — | — |
| Custom Mechanical Design LLC | Custom Mechanical Design LLC | info@custommechanicaldesign.com | (801) 296-2600 | HVAC | Kailua · Honolulu County | — | — |
| Dakine Air Conditioning | Dakine Air Conditioning | — | (808) 276-2319 | HVAC | Kihei · Maui County | — | — |
| Dm Air Conditioning And Refrigeration LLC | Dm Air Conditioning And Refrigeration LLC | — | (808) 324-0099 | HVAC | Kailua-Kona · Hawaii County | — | — |