| Business | Phone |
| Aurele St-Jean Plumbing 17 Colbrook Crt, Cornwall K6H 6E4 | (613) 932-3434 |
| Jean Lupien Plumbing 1752 Brookdale Ave, Cornwall K6J 4R3 | (613) 938-5700 |
| Lalande Plumbing 36 Marlborough St N, Cornwall K6H 3Z8 | (613) 933-1812 |
| Laperriere Mechanical 1007 Pescod Ave, Cornwall K6J 2K1 | (613) 932-4236 |
| Lapierre Plumbing & Heating 1077 Pitt St, Cornwall K6J 3S6 | (613) 933-1203 |
| Marleau Mechanical Ltd 18077 Tyotown Rd, Cornwall K6H 5R5 | (613) 932-7548 |
| Oscar Ladouceur & Son Ltd 355 Balmoral Ave, Cornwall K6H 3G6 | (613) 932-9492 |
| Garry Tait Plumbing 17 Colbrook Crt, Cornwall K6H 6E4 | (613) 932-4405 |
| Casey Mechanical Inc 920 Carleton St, Cornwall K6H 6B9 | (613) 938-1210 |
| Claude St Jean Plumbing & Htg 110 15th St W, Cornwall K6J 3J8 | (613) 938-2992 |
| E V Grandmaison Plumbing 6672 Bray St, Cornwall K6H 5R5 | (613) 931-3232 |