| Business | Phone |
| B & B Plumbing & Heating 71 Summer Ln, North Haven 6473 | (203) 234-6060 |
| T Jermine & Sons Inc 17 Peck St, North Haven 6473 | (203) 239-0365 |
| Sayre Plumbing Inc 385 Quinnipiac Ave, North Haven 6473 | (203) 234-8439 |
| Roto-Rooter Plumbing & Drain North Haven 6473 | (203) 777-6433 |
| Rousseau Plumbing & Heating 8 Skiff Pkwy, North Haven 6473 | (203) 288-9090 |
| Reliable Plumbing & Htg Co 7 Surrey Dr, North Haven 6473 | (203) 239-5084 |
| De Cola's Plumbing & Heating 222 Elm St # 2, North Haven 6473 | (203) 773-1649 |
| Delson Plumbing & Heating Inc 19 Peck St, North Haven 6473 | (203) 239-0533 |
| North Haven Mechanical Contr 348 Sackett Point Rd, North Haven 6473 | (203) 239-5301 |
| George D Porto Plumbing & Htg 569 Skiff St, North Haven 6473 | (203) 407-1545 |
| James Montano Nova Piping Co 355 Sackett Point Rd, North Haven 6473 | (203) 248-9981 |
| James V Ursini Co 78 Rebeschi Dr, North Haven 6473 | (203) 782-9873 |
| M & G Mechanical Contractors 4341 Ridge Rd, North Haven 6473 | (203) 230-4888 |
| L Goldberg & Heating 64 Van Rose Dr, North Haven 6473 | (203) 281-5004 |
| John Foley & Sons Plumbing 49 Quinnipiac Ave, North Haven 6473 | (203) 776-1168 |