| Business | Phone |
| R H Shudy Plumbing Co Po Box 239, Prospect Heights 60070 | (847) 870-7395 |
| Shilling Mechanical Contractor 18 E Stonegate Dr, Prospect Heights 60070 | (847) 808-1616 |
| A Shamrock Plumbing 5 Coldren Dr, Prospect Heights 60070 | (847) 577-7090 |
| Maker Weather 420 Hillcrest Dr, Prospect Heights 60070 | (847) 818-8247 |
| R K Tech Heating & Cooling Inc 11 Marberry Dr, Prospect Heights 60070 | (847) 255-4977 |