5808 Hwy #9 North, R. R. #4 Harriston, On, N0G 1Z0



596210 Hwy #59 Hickson, On, N0J 1L0


Family Owned & Operated Since 1977. If we don't carry it, we'll help you find it!


Outdoor Wood Furnaces

We have 35 years experience with Outdoor Wood Heating, dating back to 1979 when Jim Harkness first became interested in renewable energy wood furnaces and a shop built wood boiler that could handle 18” wood was tied into his residence heating system which eventually evolved into another shop-built broiler being installed. This one could handle 3 foot wood.
In 2004, the Wood Doctor (now Polar) line of furnaces was investigated and their largest model which burns 6 foot wood was installed and lines ran to the shops of the business and the residence. Based on the performance, Harkness Equipment become a Wood Doctor dealer which is now the Polar Furnaces.
Since starting to sell outdoor wood furnaces the company has evolved into a supplier of insulated underground piping in various styles, water to air and water to water heat exchangers plus a complete line of pumps, manifolds, in-floor piping and fittings from black to copper, pex compression and shark-bite fittings.

For all of your outdoor furnace needs and in-floor heating supplies, contact Harkness Equipment or visit our showroom to see our vast selection of parts!


  • Polar
  • Eastlake Energy
  • Heat Innovations
  • GT Globe
  • Anderson's Outdoor Wood Furnaces
  • Hot Rock Panels