| Business | Phone |
| A P Mathews Heating & Air Cond 732 Sunpoint Rd, Davidsonville 21035 | (301) 261-4022 |
| Bay Breeze Heating & Cooling 3354 Patuxent River Rd, Davidsonville 21035 | (410) 798-6933 |
| Hall Enterprises 125 Brick Church Rd, Davidsonville 21035 | (410) 798-4753 |