| Business | Phone |
| Advanced Heat-Air Systems 20 Beacon St, Wilmington 1887 | (978) 657-0090 |
| Sullivan Mechanical Svc 193 Ballardvale St, Wilmington 1887 | (781) 944-1090 |
| Chuck's Medhanical Wilmington 1887 | (978) 657-7933 |
| North Wind Air Cond & Refrig Po Box 4, Wilmington 1887 | (978) 777-0461 |