Plumbing / heating / air
| Company | Category | Area | Address | Web | Contact person | |
| ENERGY NORTH WEST | Plumbing/heating/air Cond Cont | Washington | PO BOX 968, RICHLAND, Benton, Washington, 99352-0968, USA | - | - | Almond Mouncer |
| ENERGY NW MECHANICAL INSUL | Plumbing/heating/air Cond Cont | Washington | 6302 HAAG ST # 7, RICHLAND, Benton, Washington, 99353-9360, USA | - | - | Greg Todd |
| ENERGY NW MECHANICAL INSUL | Plumbing/heating/air Cond Cont | Washington | 6302 HAAG ST # 7, RICHLAND, Benton, Washington, 99353-9360, USA | - |