
Sep 8, 2026
How Much Does HVAC Replacement Cost? (2026 Cost Guide)
Reading Time About 16 Min
Open 24/7

Commercial HVAC
A commercial HVAC company providing installation, maintenance, repair, and replacement services for businesses in the Chicagoland area.
Althoff Industries, Inc. is a commercial HVAC contractor based in Crystal Lake, IL. Services listed include commercial HVAC maintenance, commercial HVAC installation, commercial HVAC repair and 24/7 emergency service. 65 years in business, emergency service available and licence #055-001101.
65
Years in Business
Yes
Emergency Service
Crystal Lake, IL
Service Area
No Best HVAC reviews yet
Been a customer of Althoff Industries, Inc.? Be the first to rate them.
Want to put your heating and cooling company in front of local homeowners and businesses actively searching for reliable HVAC services? Claim your spot and connect with high-intent customers in your area.
Get Featured

Sep 8, 2026
Reading Time About 16 Min

Sep 7, 2026
Reading Time About 6 Min

Sep 6, 2026
Reading Time About 7 Min

Sep 3, 2026
Reading Time About 6 Min
Have another question? Our team is here to help.
Althoff Industries, Inc. lists commercial HVAC maintenance, commercial HVAC installation, commercial HVAC repair and 24/7 emergency service. Contact them to confirm they handle your specific job.
Althoff Industries, Inc. is based in Crystal Lake, IL.
Yes, Althoff Industries, Inc. lists emergency service. Call them directly for urgent heating or cooling repairs.
Althoff Industries, Inc. lists licence number 055-001101. You can confirm it is current with the Illinois contractor licensing board.
Use the call button, website link or contact details on this page to reach the company directly.
Get in touch and we will keep your listing details accurate and add photos.