Welcome to Temperature Systems, Inc. (TSI)!  We invite you to come on in and take a look around. 

TSI is a family owned business which was founded in 1947 by our current CEO’s father and grandfather.  We are Wisconsin’s largest distributor of Carrier heating and cooling products; we have been a distributor for Carrier since 1975.  In addition to Carrier, we are also a distributor for Bryant, Tempstar and Payne product lines along with various supply items.

Primary Service Area