Experience the Difference!!

Thielmann & Son Heating has been providing the best climate comfort products along with money saving solutions and superior customer service to Southeast Wisconsin since 1929. Our team prides ourselves on timely service, competitive pricing, attention to detail and our willingness to always go the extra mile for our customers.

We hire smart people who work hard and are fun to be around. Everyone from our certified heating and cooling technicians, indoor air quality specialists, refrigeration certified experts, and knowledgeable office professionals does whatever it takes to keep our customers comfortable. When you work with our skilled crew, you can rest assured that your home comfort will be taken care of. 

Our Furnace, Boiler, and Air Conditioner Installation and Repair Services are a Step Above!

In 2020, Thielmann & Son Heating acquired a trustworthy name in the industry, Roth Heating Co. Inc. This now equips them to handle new construction installs and service work in the Greater SE Wisconsin corner with offices located in Hartford, New Berlin, Oak Creek and Burlington.