SOUTHEAST WISCONSIN’S HVAC EXPERTS

ESTABLISHED IN 1962

OUR STORY

Continuing a Tradition of Exceptional Heating and Cooling Services

What began in a garage in 1962—with Gordy and John Cole’s commitment to offering honest, high quality HVAC service—continues today at Interstate Heating Co. in Sussex. We’ve grown to offer the latest heating, cooling, and air quality products, and our service area now covers all of southeastern Wisconsin.

We are three generations strong and still follow the most basic rule of business: we treat our customers the way we want to be treated.

 

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WHAT OUR CUSTOMERS ARE SAYING

Google Rating
4.9
Based on 840 reviews
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“Chris Carne was the technician who came to our condo today to repair and service our gas furnace. He did a very thorough testing of the furnace and discovered we had a faulty gas valve. His courteous explanation of what he was doing along with his nice personality made this repair a pleasant experience. We would highly recommend him for any of your service issues.”
- Alan R.

“Eric, John and Carson were all phenomenal with the replacement of my 20-year-old AC unit. Communication and work ethic were awesome. Thank you!”

- Amy K.

“Dylan did a great job for us. We asked for the yearly maint on the AC, Heating, and Humidifer. everythign went smooth and he answered any questions we had.”

- Gary S.

CURRENT OFFERINGS

PROUDLY PARTNERED WITH

Carrier Factory Authorized Dealer logo.
Milwaukee Brewers logo.

INTERSTATE
AFFILIATIONS

Better Business Bureau logo.
Metropolitan Builders Association logo.
North American Technician Excellence (NATE) logo.