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New Berlin






Menomonee Falls


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New Berlin




Menomonee Falls




Please take a moment to find out why Thielmann & Son is the top choice for furnace & air conditioner (HVAC) repair and heating installation service in Milwaukee, Menomonee Falls, New Berlin, Hartford, and Burlington.


Your crew did a wonderful job!

I just wanted to thank you for all your efforts in installing a new AC unit at my house in Wauwatosa. Your crew did a wonderful job this morning and many thanks to all of them. Hope that we continue doing business together in the near future.
Abdulkader H.

That’s success!

We wish to acknowledge how pleased we are with the furnace installed by your efficient staff. From the friendly and knowledgeable expertise of Bill, to the quiet installation of the new and the clean removal of the old, the workers were top of the line. Thank you so very much. We were made to feel that your company really cared about us. That’s success!
Don and Kathy V.

I highly recommend!

I want to thank you for your quality work that was done on my personal house that I built recently. I know what problems can arise in getting a contractor you can trust, plus do a quality job. Being in the family home building business the past 30+ years my father built hundreds of homes in the Hartford area. He always called on Thielmann’s to accommodate his heating and cooling needs. Brad provides A-1 service towards our new construction projects and servicing our rental units. I highly recommend Brad and his staff to provide anyone with their heating and cooling needs.
Joe Schlosser

We all appreciated your hard work!

Thanks to, Brad, Chris, Shane, Chuck, and everyone that helped get this job done so quickly. We all appreciated your hard work.
Scott and Diana

Craftsmanship in mind.

I have had Lennox for thirty five years and have nothing but good to say as they have good products. Very dependable. I have been dealing with Thielmanns just as long and their service is excellent. The recent installation was done with craftsmanship in mind.
Marvin- Hartford, WI

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