Your Oshkosh Furnace Company

When the temperature in the Fox Valley area drops, you need a dependable furnace. For all of your heating needs in Oshkosh, WI, turn to the pros at Black-Haak. Since 1956, we’ve been the local team to call for furnace repair, installation and maintenance. We have an apprenticeship program where our technicians undergo regular training. Our many reviews from satisfied customers speak for themselves!

Customers appreciate our:
  • 24-hour service
  • Weekend hours
  • A+ rating from the BBB
  • Energy Star certification
  • Financing options on approved credit
  • Satisfaction guarantee