Financing Available

24/7 Emergency Service Available

New Berlin






Menomonee Falls


Click To Call

New Berlin




Menomonee Falls




Top Quality Air Conditioner & Furnace Repair & Installation in Milwaukee, New Berlin, Hartford, Burlington, and Menomonee Falls


Just as it’s important to check the oil in your car on a semi-annual basis, it’s always a great idea to have your furnace cleaned. A dirty filter can cause your air conditioner to not work properly.


Thielmann & Son Heating and Cooling provides the very best in furnace and air conditioner repair and installation (HVAC) heating and cooling services in the Milwaukee, Waukesha, New Berlin, West Allis, Wauwatosa, Hartford, Menomonee Falls, Burlington, and Muskego areas.


As a certified Premiere Lennox Dealer and an Authorized Bryant Dealer, you’ll be able to rest easy knowing that the services provided by Thielmann are top quality. To schedule a maintenance check for your furnace, boiler, or air conditioner, contact Thielmann & Son Heating and Cooling today.


Milwaukee Furnace and Air Conditioner (HVAC) Repair and Installation Services Include:

  • Preventative Maintenance Agreements
  • Gas Furnace Installation
  • Oil Furnace Installation
  • Gas Furnace Repair, Service & Maintenance
  • Oil Furnace Repair, Service & Maintenance
  • Garage and Unit Heater Installation
  • Air Conditioning Installation
  • Air Conditioning Repair, Service & Maintenance
  • Heat Pump Installation
  • Heat Pump Repair, Service & Maintenance
  • Oil to Gas Conversions
  • Geothermal Heating and Cooling Systems
  • Boilers Installation
  • Boiler Repair, Service & Maintenance
  • Radiant Floor Heat
  • Hydronics
  • Zoning Systems
  • Custom Sheet Metal Fabrication and Installation
  • Indoor Air Quality
  • Humidifiers
  • Dehumidifiers
  • ERV’s
  • HRV’s
  • Duct Cleaning
  • Commercial- New Construction
  • Commercial- Roof Top Replacement
  • Commercial- Build-outs and Remodels
  • Residential- New Construction
  • Residential- Remodeling
Get A Free Estimate

  • This field is for validation purposes and should be left unchanged.
Got a question? Let one of our qualified technicians help you find an answer.
Ask A Tech

Ask A Tech

  • This field is for validation purposes and should be left unchanged.

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


Learn about our current money-saving specials.

Learn More