| Business | Phone |
| All Seasons Utility 19 Granny Rd, Farmingville 11738 | (631) 732-8080 |
| Bargain Utilities Htg-Cooling 374 Adirondack Dr, Farmingville 11738 | (631) 451-1400 |
| Bee Saf Heating Inc Farmingville 11738 | (631) 732-3787 |
| Consolidated Comfort Inc Ridgewood Ave, Farmingville 11738 | (631) 732-9194 |