Harkness Equipment began with selling outdoor wood furnaces, but evolved into supplying all your outdoor furnace supplies. In addition to selling the units, Harkness Equipment carries a complete line of hydrualic heating supplies, including insulated underground piping, in-floor piping, heat exchangers (either water-to-air or water-to-water), pumps, manifolds, fittings (black, stainless steel, copper), as well as pex compression and shark-bite fittings.
Portage and Main Ultimizer Wood Boiler BL 2840 Share
Here are the specifications for your Ultimizer Wood Series BL 2840: 275,000 approx. BTU/hr Heats up to 6,000 sq. ft. 63″ x 42″ x...
Portage and Main Ultimizer Wood Boiler BL 3444 Share
Here are the specifications for your Ultimizer Wood Series BL 3444: 400,000 approx. BTU/hr Heats up to 9,000 sq. ft. 68″ x 50″ x...
Portage and Main Ultimizer Wood Boiler BL 4044 Share
Here are the specifications for your Ultimizer Wood Series BL 4044: 500,000 approx. BTU/hr Heats up to 12,000 sq. ft. 72″ x 57″ x...
Polar Furnace G-CLASS G2 Share
G-Class is all about making wood burning as clean, simple, and easy as possible while eliminating your high heating bills. To accomplish this, the...
Polar Furnace G-CLASS G2
Polar Furnace G-CLASS G2 Plus* Share
G-Class is all about making wood burning as clean, simple, and easy as possible while eliminating your high heating bills. To accomplish this, the...
Polar Furnace G-CLASS G2 Plus*
Polar Furnace G-CLASS G3* Share
G-Class is all about making wood burning as clean, simple, and easy as possible while eliminating your high heating bills. To accomplish this, the...
Polar Furnace G-CLASS G3*
Low-profile HotRockPanels Share
Our new Low-Profile HotRockPanels make it easier than ever to add radiant in-floor heating to your next renovation, retrofit, or upper floors!With the...
Original HotRockPanels Share
Our original HotRockPanels provide an all-in-one insulator, moisture barrier, and PEX tubing fastener. Designed to be placed below the concrete slab...
Here are the specifications for your Ultimizer Wood Series BL 2534: 175,000 approx. BTU/hr Heats up to 4,000 sq. ft. 57″ x 40″ x...