Info About Pricing

‘Starting At’ price is MSRP for base model from manufacturer. Exact price you pay will be higher, as pricing does not include installation, venting, taxes, fees, or accessories. Pricing is subject to change without notice. Mistakenly posted prices and/or options on the website do not obligate us to those incorrect prices and/or options. Please contact us to inquire about an estimate.

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Green Mountain 40 by HearthStone

Wood Burning Free Standing Stove

Warm your living area with a clean, efficient, long-lasting fire in a clean-traditional Green Mountain wood stove. Our GM40 wood stove is styled with clean lines and offered in traditional black cast iron. Built for the wood stove purist. The GM40 is lined with soapstone blocks. Soapstone absorbs the heat of the fire to give you long-lasting comfortable heat. Our Green Mountain stoves exceed EPA clean burning standards. You can be sure they will burn clean today and for many years to come.

TruHybrid™ Reliability

Clean Traditional Cast Iron

Enjoy up to 20 hours of HeatLife

Easy to use

Soapstone Firebox Lining

Matte Black

Heating Capacity

Up to 1,400 sq. ft.



Firebox Capacity

1.32 cu. ft.


1.07 g./hr.

EPA 2020 Certified



Matte Black

Appliance Width 23-1/4″
Appliance Height 30-3/8″
Appliance Depth 16-3/8″
Weight 350 lb.
Combustion System TruHybrid
BTU Up to 40,000
Efficiency 79% HHV
EPA Certified 1.07 g./hr.
Finish Matte Black
Firebox Capacity 1.32 cu. ft.
Flue Exit Diameter 6″
Flue Exit Location Top
HeatLife 16 Hours of Heat
Heating Capacity 1,400 sq. ft.
Maximum Log Length 16″
Material Cast Iron


Blower with Rear Heat Shield
Outside Air Adapter

See if this product works for you!