WHAT ARE WE DOING TO PROTECT YOU? NEW PROTOCOL FOR COVID-19

Your #1 choice for furnace repair in the Fond du Lac, WI area!

Is Now...
The Same Quality Service You've Come to Know
D.R. Kohlman is now Lighthart HVAC, and we want to make the transition as easy as possible. Give us a call 920-999-4631 to recieve the same great service, or if you have any other questions.
Contact us today to receive the same great service.
All Warranties & Service Agreements Will Still Be Honored
What we offer
  • Air Conditioning Service
  • Heating Services
  • Geothermal
  • Ductless
  • Satisfaction Guarantees
  • Green Energy Savings
  • Financing Options
  • And so much more...