| Business | Phone |
| Lmb Electric 4608 N Sayre Ave, Harwood Heights 60706 | (708) 456-2820 |
| John's Electric 8109 W Maple Ave, Harwood Heights 60706 | (708) 456-1353 |
| Lexco Cable 7320 W Agatite Ave, Harwood Heights 60706 | (773) 588-8890 |
| S & S Illumination Electrical 4708 N Opal Ave, Harwood Heights 60706 | (773) 802-3400 |