Hearthstone: Green Mountain 80 8680

HearthStone’s biggest and most efficient wood stove.

Quick Facts

• Heating Capacity: Up to 2,500 sq ft (HearthStone’s stated figure).
• Efficiency: 81% (higher heating value)
• Maximum Log Size: 23″
• HeatLife: 30 hours (how long you can still restart a fire from the coals with kindling).
• Fuel: Wood.

Who It’s For

You want a big stove with a big view of the fire, and less time spent splitting wood. The HearthStone Green Mountain 80 (8680) is made for that. Pick a stove sized wrong and you either chase a cold room or cook yourself out of it.

What Makes It Special

HearthStone calls the GM80 its biggest and most efficient wood stove, and says its window is designed to let you see as much fire as possible.

Burn logs up to 23 inches in the soapstone-lined firebox, so you spend less time splitting wood.

HearthStone’s TruHybrid system adds a third, catalytic stage to primary and secondary combustion, for a burn clean enough that a roaring fire shows no visible smoke from the chimney and that surpasses the 2020 federal clean-air standards. You can still burn high and hot or low and slow.

Possible Downsides

• It is a wood fire. You load it, tend it, and carry out the ash.

If you want steady, long-lasting wood heat, the HearthStone Green Mountain 80 (8680) is the right decision. On the coldest night, the house is warm and the fire is the reason.

Add the blower with rear heat shield and the outside air adapter.