# Thielmann & Son Heating & Cooling

Thielmann & Son Heating & Cooling is listed as a heat pump installer in Hartford, WI, United States.

Thielmann & Son Heating & Cooling appears on the Focus on Energy register (Trade Ally contractor), with an address in Hartford, WI. Services named in the source: Geothermal.

## Details

- Address: 1310 E SUMNER ST, Hartford, WI, 53027-1614, United States
- Phone: [12626732500](<tel:12626732500>)
- Website: [thielmannheating.com/](<https://thielmannheating.com/>)
- Register or agency named in the source: Focus on Energy
- Source of the listing data: Focus on Energy (Wisconsin utilities / PSC), https://focusonenergy.com/trade-allies?searchType=home&distance=all&serviceType=renewable-energy-geothermal, fetched 2026-11-10.

## Questions

### Where is Thielmann & Son Heating & Cooling?

Thielmann & Son Heating & Cooling is at 1310 E SUMNER ST, Hartford, WI, 53027-1614, United States.

### How do I contact Thielmann & Son Heating & Cooling?

To contact Thielmann & Son Heating & Cooling, call 12626732500 or visit https://thielmannheating.com/.

## Source

From [Public program registers and member directories](https://focusonenergy.com/trade-allies?searchType=home&distance=all&serviceType=renewable-energy-geothermal), license No reuse licence stated by the seven registers, checked 2026-11-11.

Last updated November 11, 2026.

## Links

- This heat pump installer on the [web page](<https://heatpumppros.fyi/us/wi/hartford/thielmann-and-son-heating-and-cooling>)
- [Geothermal heat pumps in Hartford](<https://heatpumppros.fyi/us/wi/hartford/category/geothermal-heat-pumps.md>)
- [More heat pump installers in Hartford](<https://heatpumppros.fyi/us/wi/hartford.md>)