Data
Heating and air conditioning companies in Illinois
There are 7,349 heating and air conditioning companies in Illinois (CityPreferred count, October 2026). Chicago has the most (917), then Aurora (93).
Reviewed October 1, 2026
Get a HVAC contractor
Free. Takes a minute. One company that serves your area contacts you.
Illinois cities
| City | Companies |
|---|---|
| Chicago | 917 |
| Aurora | 93 |
| Elgin | 84 |
| Joliet | 77 |
| Naperville | 73 |
| Skokie | 68 |
| Plainfield | 65 |
| Springfield | 64 |
| Schaumburg | 61 |
| Lombard | 60 |
| Addison | 58 |
| Des Plaines | 57 |
| St. Charles | 55 |
| Oak Lawn | 55 |
| Peoria | 54 |
| Belleville | 54 |
| Rockford | 53 |
| Glenview | 52 |
| Crystal Lake | 52 |
| Bloomington | 51 |
| Downers Grove | 49 |
| Elk Grove Village | 49 |
| New Lenox | 48 |
| Arlington Heights | 48 |
| Bolingbrook | 48 |
| Northbrook | 44 |
| Orland Park | 43 |
| Palatine | 43 |
| Champaign | 42 |
| Carol Stream | 41 |
| Decatur | 39 |
| Mokena | 38 |
| Evanston | 37 |
| Wheeling | 37 |
| Frankfort | 37 |
| Algonquin | 36 |
| Waukegan | 35 |
| Roselle | 34 |
| Lake Zurich | 34 |
| Tinley Park | 34 |
| Elmhurst | 34 |
| Granite City | 34 |
| Berwyn | 33 |
| Morton Grove | 33 |
| Quincy | 33 |
| Mchenry | 33 |
| Melrose Park | 32 |
| Mundelein | 31 |
| Niles | 31 |
| Bensenville | 29 |
| Mount Prospect | 29 |
| Antioch | 29 |
| Park Ridge | 29 |
| Buffalo Grove | 29 |
| Wauconda | 28 |
| Hoffman Estates | 28 |
| Oak Park | 28 |
| Cary | 28 |
| Romeoville | 28 |
| Bridgeview | 27 |
| Collinsville | 27 |
| Wood Dale | 27 |
| Franklin Park | 26 |
| Batavia | 26 |
| Alsip | 26 |
| Westmont | 25 |
| Barrington | 25 |
| Libertyville | 25 |
| Marion | 25 |
| Lake Villa | 24 |
| Danville | 24 |
| Brookfield | 24 |
| Glendale Heights | 23 |
| Villa Park | 23 |
| Pekin | 23 |
| Bartlett | 22 |
| Wheaton | 22 |
| Oswego | 22 |
| Kankakee | 22 |
| Lisle | 22 |
| Machesney Park | 21 |
| Grayslake | 21 |
| Lake Bluff | 21 |
| Lockport | 21 |
| Galesburg | 21 |
| Lake In The Hills | 21 |
| Willowbrook | 21 |
| Freeport | 21 |
| Homer Glen | 21 |
| Oak Forest | 20 |
| Lansing | 20 |
| Edwardsville | 20 |
| West Chicago | 20 |
| East Peoria | 20 |
Illinois and the rest of the country
Illinois has 7,349 of the 169,801 heating and air conditioning companies in the country (4%). All states.
What is counted
Independent businesses that do this work, for homes or for businesses. Suppliers, stores and national chains are left out. Being counted does not mean a company is licensed, insured or recommended. A city is listed when it has 20 or more. How we count.
Questions and answers
- How many heating and air conditioning companies are there in Illinois?
- 7,349, by CityPreferred's count as of October 2026.
- Which Illinois city has the most?
- Chicago, with 917, followed by Aurora with 93.