| Business | Phone |
| Norridge & Northwest Heating 5017 N Knight Ave, Harwood Heights 60706 | (708) 456-1897 |
| R Carroza Plumbing 5000 N Pittsburgh Ave, Harwood Heights 60706 | (708) 456-9245 |
| Schuepfer Plumbing Co 7259 W Lawrence Ave 2, Harwood Heights 60706 | (708) 867-8585 |
| Roto-Rooter Plumbing & Drain Harwood Heights 60706 | (708) 867-8533 |
| Stachnik's Automatic Heating 4508 N Oak Park Ave, Harwood Heights 60706 | (708) 749-2229 |