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Thielmann Heating, Cooling & Plumbing

4.9
(1774 reviews)

Business Details

17020 W National Ave, New Berlin, WI
53151, United States
(262) 600-3027
https://thielmannheating.com/?utm_source=GMB&utm_medium=local&utm_campaign=New-Berlin

About

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

Thielmann Heating, Cooling & Plumbing
17020 W National Ave, New Berlin, WI
53151, United States

Hours

MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours

Reviews

4.9
1,774 reviews
5 stars
1,706
4 stars
42
3 stars
5
2 stars
5
1 star
16
  • JB
    J Braun
    Mar 30, 2026
    5.0
    Jeff D is an asset to your company! Very polite. Very patient with my questions. He's a keeper!
  • HR
    Hasan Raza
    Mar 30, 2026
    5.0
    Donovan S did an amazing job with our annual furnace tune up. He was professional and courteous. Highly recommend.
  • MW
    Mark W.
    Mar 29, 2026
    5.0
    I'm doing some commercial work with these guys, they were very informative and prompt and will be booking a complicated job with them for my restroom
  • DC
    Dave Crawford
    Mar 24, 2026
    5.0
    Todd H was very knowledgeable and made sure my furnace was working correctly and discussed a maintenance plan to avoid further issues.
  • AM
    Anthony McLean
    Mar 16, 2026
    5.0
    Last week my mother in-law’s heat stopped working. I called the team at Thielmann and within the next hour they showed up and had the heat back up and running in under two hours of placing the phone call. I found there same day service fee acceptable and the price to tune up and fix some items that caused the failure was great as well. They were professional and polite. I will be using Thielmann heating cooling and plumbing in the future when issues arrive. Thanks

Brand Certified Facts from Thielmann Heating, Cooling & Plumbing

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Certified April 05, 2026Yext Knowledge Graph
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