| Business | Phone |
| Accurate Air Inc 140 Bouchard St # 1, Manchester 3103 | (603) 669-5159 |
| All-Temp Hvac Corp 911 Candia Rd, Manchester 3109 | (603) 623-5977 |
| Balanced Air Systems Inc 991 Candia Rd # 3, Manchester 3109 | (603) 625-9581 |
| E Z Air Htg & Ac Instlltns 90 Elmhurst Ave, Manchester 3103 | (603) 627-2781 |
| Eckhardt & Johnson Inc 896 Goffs Falls Rd, Manchester 3103 | (603) 622-7493 |
| W L Brady Corp 302 Lake Ave, Manchester 3103 | (603) 669-7967 |
| Harris Environmental Systems Manchester 3103 | (603) 644-3737 |
| Liberty Air Inc 722 E Industrial Park Dr # 8, Manchester 3109 | (603) 641-6628 |
| Rumford Energy Manchester 3101 | (603) 668-9050 |