HearthStone Green Mountain 80 TruHybrid Wood Stove, 8 in Flue
If you like loading big splits, the Green Mountain 80 is built for it. Its 3.1 cubic foot soapstone-lined firebox takes logs up to 23 inches, so there's less cutting wood down to size and more time enjoying a big, steady fire.
This listing is model 8680, the Green Mountain 80 with an 8 inch flue collar. HearthStone rates it at 81% efficiency (HHV) with certified emissions of 0.7 g/hr, thanks to its TruHybrid catalytic system. It's a substantial stove at 550 pounds, and an optional blower kit is available.
What Makes the Green Mountain 80 (8680) Different
- A big firebox. 3.1 cubic feet of soapstone-lined firebox with room for 23 inch logs.
- 81% efficiency (HHV). HearthStone's TruHybrid catalytic system gives the 8680 an 81% HHV efficiency rating.
- 8 inch flue collar. The 8680 connects to an 8 inch flue, which matters if you're matching an existing chimney.
This listing is the HearthStone Green Mountain 80 TruHybrid wood stove, model 8680 with an 8 in flue collar, part number 8680-0010, in matte black. It is not the 6 in flue model 8681.
Key Specifications
- Combustion: TruHybrid catalytic combustor
- Efficiency (HHV): 81%
- Particulate emissions: 0.7 g/hr
- EPA certification: 2020 particulate emissions standard
- Heat output range (tested, per manual): 15,069 to 33,396 Btu (output)
- Firebox capacity: 3.1 cu ft
- Maximum log length: 23 in
- Flue size: 8 in, top exit
- Dimensions (W x D x H): 29 1/2 in x 24 1/8 in x 33 in
- Weight: 550 lbs
- Blower: Optional, Blower Kit 96-57800
- HeatLife (HearthStone rating): 30 hours
Efficiency and output numbers come from HearthStone's testing. Real-world heat depends on your home, your chimney, your wood, and how you run the stove.
Ownership & Maintenance
The 8680's catalytic combustor becomes active around 500 degrees F, so it pays to learn the startup routine. The combustor should be inspected periodically and will eventually need replacement. HeatLife is HearthStone's burn-time rating, not a promise. Hearth Doctor customers get support after the sale.
A stove this size deserves a good plan. Talk with us at our Auburn, Brunswick, and Yarmouth showrooms about chimney fit, clearances, hearth protection, and installation, or browse more wood stoves.