Brand Certified
Thielmann Heating, Cooling & Plumbing
4.9(1799 reviews)
Certified by Thielmann Heating, Cooling & Plumbing • May 17, 2026
Business Details
17020 W National Ave, New Berlin, WI
53151, United States
Certified by Thielmann Heating, Cooling & Plumbing • May 17, 2026
(262) 600-3027
Certified by Thielmann Heating, Cooling & Plumbing • May 17, 2026
https://thielmannheating.com/?utm_source=GMB&utm_medium=local&utm_campaign=New-Berlin
Certified by Thielmann Heating, Cooling & Plumbing • May 17, 2026
About
Certified by Thielmann Heating, Cooling & Plumbing • May 17, 2026
HVAC ContractorPlumberHeating ContractorAir Conditioning ContractorEmergency PlumbersWater Heater SalesWater Heater ServiceWater Softening Equipment SupplierBoiler SupplierAir Quality Consultant
Since 1929, Thielmann Heating, Cooling & Plumbing has been Southeastern Wisconsin’s trusted choice for dependable comfort and quality service. Our experienced team provides expert heating, cooling, and plumbing solutions for homes and businesses, including the installation, repair, and maintenance of high-efficiency furnaces, air conditioners, ductless mini-splits, and indoor air quality systems. We also specialize in plumbing services such as water heater replacement, water treatment systems, and leak detection and repair.
Thielmann is committed to delivering the highest level of craftsmanship with over nine decades of experience to every job — ensuring your comfort, safety, and peace of mind year-round.
Location
Certified by Thielmann Heating, Cooling & Plumbing • May 17, 2026
Thielmann Heating, Cooling & Plumbing
17020 W National Ave, New Berlin, WI
53151, United States
Hours
Certified by Thielmann Heating, Cooling & Plumbing • May 17, 2026
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours
Reviews
4.9
1,799 reviews
5 stars
1,731
4 stars
41
3 stars5
2 stars5
1 star17
- MQMatt Quinn2 days ago5.0I recently had my furnace and air conditioning unit serviced by Thielmann Heating, Cooling and Plumbing. Kevin P., the technician I had for my service was fantastic! He spent 2 hours cleaning and servicing the furnace, the humidifier and the central air unit. I highly recommend him for anyone needing these services.
- RJRick Jahn2 days ago5.0Kyle took care of a broken/deteriorated sink drain pipe for me. The estimate was the exact end cost and the repair was fast and easy. He cleaned up after himself and was very courteous and polite. I will definitely consider Thielmann for any future plumbing needs.
- MSMelanie Strenk5 days ago5.0Service was excellent. Hayden was very courteous and professional, cleaning up around the work area and going over the details of the work he completed....installed new HVAC zoning into our existing sysyem. Would definitely recommend
- EBElena BarronMay 10, 20265.0Kyle was straight forward in what needed to be done ! I would recommend Kyle! I am an avid gardener I so need my hose! Great 👍🏼 job 👍🏼 Replacing old lead pipes to copper to outside and upgraded to a shut off valve in pipe during winter months !
- HKHeidi and Mark KohoutMay 7, 20265.0I want to again thank Rich from Thielman for the excellent service he and his company provided during a recent maintenance visit for both the heating and cooling systems. Rich was on time, very efficient, and answered all my questions. Thank again!
Brand Certified Facts from Thielmann Heating, Cooling & Plumbing
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