| Business | Phone |
| Central Tech Co 1512 W 132nd St, Gardena 90249 | (310) 715-6754 |
| X Cel Mechanical Systems Inc 1614 W 139th St, Gardena 90249 | (310) 660-0090 |
| Air Services Co Gardena 90248 | (310) 217-1821 |
| Balanced Air Gardena 90248 | (310) 532-1958 |
| Hgm Construction Inc 13714 S Normandie Ave, Gardena 90249 | (310) 769-6785 |
| Mega Air Conditioning Co 1320 W El Segundo Blvd # B, Gardena 90247 | (310) 516-6233 |
| Ray's Air Conditioning & Htg 13519 1/2 S Vermont Ave, Gardena 90247 | (310) 538-5765 |
| West Coast Source Inc 15507 S Normandie Ave # 444, Gardena 90247 | (310) 323-1733 |