Thielmann Heating, Cooling & Plumbing
Furnace, boiler, heat pump and air conditioning service, plus sump pump, drain and standby generator work, for homes in New Berlin and nearby Southeast Wisconsin towns. Emergency calls are taken around the clock.
What they do
The company installs, repairs and maintains furnaces, boilers, heat pumps and air conditioning, and also services ductless mini-splits. For basements, it installs and services sump pumps and clears drains, and it installs standby generators for backup power. Structural drying is offered after water damage. Work covers New Berlin, Oak Creek, Milwaukee and Wauwatosa. Emergency service runs around the clock, every day, and free estimates are offered on replacement work. Financing is available. Lennox, Carrier and Mitsubishi equipment is among the brands it works with. The business has served Southeast Wisconsin since 1929.
- Sump pumps
- Furnace repairs and installs
- Boiler service
- Heat pumps
- Ductless mini-splits
- Air conditioning
Listed under Basement flooding and sewer backup, Heating and cooling emergencies
Where they work
What we checked
Checked 12 Nov 2026, from public sources.
Not yet verified. We haven’t contacted this business yet. Ask for a written quote before work starts.
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