Yukon Big JACK and Super JACK Addon Wood Furnace
Product Support

Jacks operate on a forced draft principle. Put some kindling in, light it with a match, and turn the thermostat up. That turns on the combustion fan to get the wood burning. Then load it up and relax. It's automatic from there. The room thermostat tells the combustion fan to start when it is not warm enough and shuts it off when you're comfortable.

A fan control mounted in the sheet metal plenum above the firebox tells the circulating blower when to start and stop. All automatically. Is the Jack efficient? You bet. The right amount of the air from the combustion fan is directed to the fire. Twenty percent of the air (called secondary air) is directed above the fire to ignite the unburned gases and smoke created by the main fire. The result is high efficiency wood burning.

 

The Big Jack Add-on Wood Furnace

An extremely heavy-duty warm air add-on wood furnace. Add it to your present duct system. Supplied with or without blower. 50-90,000 BTU output for homes up to 1,500 square feet.

 

The Super Jack Add-on Wood Furnace

An extremely heavy-duty wood warm air add-on furnace. Add it to your present duct system. Supplied with or without blower. 75-125,000 BTU output for larger homes.

Available Models
BRAND ORDER NO. DESCRIPTION PHOTO
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Yukon 10169500 Jack Accessories - BJ90 Plenum Package Login
Yukon 10169600 Jack Accessories - SJ125 Plenum Package Login
Yukon 10169700-J Jack Accessories - Safety Heat Pump Login
Yukon 500 Jack Accessories - Blower/Motor Package (Required for stand alone wood furnace) Login
Yukon BJ90-C Big Jack 90 - Add-on Wood Furnace - 90,000 btu/hr Input Login
Yukon BJ90-C-B Big Jack 90 - Add-on Wood Furnace - 90,000 btu/hr Input (Case cut for Blower) Login
Yukon EHWP-24-J Jack Accessories - Hotrod Water Heater Login
Yukon J203 Jack Accessories - Blower Cabinet (Required for stand alone wood furnace) Login
Yukon SJ125-C Super Jack 125 - Add-on Wood Furnace - 125,000 btu/hr Input Login
Yukon SJ125-C-B Super Jack 125 - Add-on Wood Furnace - 125,000 btu/hr Input (Case cut for Blower) Login