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What To Expect
Discover the Thielmann Heating, Cooling & Plumbing Difference
Fully Licensed & Insured
Our experts have the expertise and training to deliver the highest quality services every time.
Trusted Since 1929
We have served Southeastern Wisconsin for nearly a century, so we understand the needs of our community.
Financing Available
We offer various options from financing partners to help you meet your specific needs and budget.
5-Star Customer Service
Thielmann Heating, Cooling & Plumbing promises five-star customer service with every interaction.
Committed to Excellence
We complete jobs quickly without compromising our commitment to excellence.
Satisfaction Guarantee
Our team is dedicated to ensuring your 100% satisfaction with every service we perform.
Fully Licensed & Insured
Our experts have the expertise and training to deliver the highest quality services every time.
Trusted Since 1929
We have served Southeastern Wisconsin for nearly a century, so we understand the needs of our community.
Financing Available
We offer various options from financing partners to help you meet your specific needs and budget.
5-Star Customer Service
Thielmann Heating, Cooling & Plumbing promises five-star customer service with every interaction.
Committed to Excellence
We complete jobs quickly without compromising our commitment to excellence.
Satisfaction Guarantee
Our team is dedicated to ensuring your 100% satisfaction with every service we perform.
Our Reviews
See What Your Neighbors Are Saying
I liked my experience with them. The guys I spoke with prior to doing the work, the estimation phase , and the ones I spoke with after the work was completed had enough knowledge and suggestion to answer all my questions. I’m pleased with the job…
Excellent team from start to finish. They were all very respectful of our property, as they promptly and professionally went about their task of installing a new air conditioner system. The system works very well, so far. It is also much quieter than the previous 40+…
Thielmann did a tremendous job replacing our Carrier furnace. They worked with us to make sure we were able to get the right product and even worked with Carrier on the issues we were seeing on our old furnace as it was failing sooner than it…
I've been using Thielmann Group for all my heating and air conditioning since I built my house 23 years ago. They have been great in emergency service and regular maintenance service. On time and very friendly staff. Would, and have, recommend them to anyone!
I have used Thielmann for both installation of a new furnace + A/C recently, but also an install of a ductless mini-split unit six years ago. I fully trust their brands and recommendations. I can't say enough of about this company. Every single person from administrative…