Hearthstone Stoves Green Mountain 60 Freestanding Wood Stove

Long, Steady Soapstone Heat in a Mid-Size TruHybrid Wood StoveThe HearthStone Green Mountain 60 Model 8660 pairs a cast iron body with a soapstone-lined firebox and TruHybrid catalytic combustion for clean, extended heat in mid-size spaces.Key Features TruHybrid combustion combining primary, secondary, and catalytic tertiary stages, EPA certified at 0.6 g/hr 79% HHV weighted-average efficiency measured per EPA Method 28R and CSA B415-10 Up to 60,000 BTU/hr maximum heat output burning cordwood, heating up to a maximum of 2,000 square feet Burn time of up to 24+ hours and HeatLife of up to 30 hours, per the current owner’s manual Soapstone firebox lining that stores heat from the fire and releases gentle radiant warmth Large ceramic glass window framing a wide view of the fire 6-inch top flue outlet with an included rear heat shield Product FeaturesA Stove With A ViewThe clean yet traditional styling of the GM60 frames a wide view into the firebox. The cast iron body carries contemporary lines that suit a range of interiors, while the large glass window lets you enjoy the fire from across the room.TruHybrid Combustion TechnologyThe TruHybrid system combines primary and secondary combustion with tertiary combustion through a catalytic combustor to burn smoke and remaining particles for an ultra clean burn that surpasses 2020 EPA standards. A bypass handle routes combustion products around the catalyst during startup and reloading, and a catalyst thermometer indicates when the stove is in the active range. The stove typically operates in the 800 °F to 1300 °F catalyst range.Soapstone Firebox LiningThe GM60 firebox is lined with soapstone blocks that absorb the high heat of the fire and radiate it back gradually. HearthStone calls this extended heat release HeatLife. Under the right conditions, you will be able to start a new fire with kindling up to the end of the product’s HeatLife.Extended BurnsThe current owner’s manual publishes a burn time of up to 24+ hours and a HeatLife of up to 30 hours. Burn the stove low and slow, then add wood to stoke it up again. Actual performance depends on fuel type, moisture content, packing density, draft, and other installation and operating conditions. The manual notes the stove should not be considered the primary heat source for your home.Available Finish and ConfigurationThe Green Mountain 60 is currently offered in one configuration. Pricing shown is manufacturer suggested retail pricing. Finish Exterior configuration Loading configuration Fuel Part ID MSRP Included equipment Black Matte Cast iron, black matte finish with soapstone-lined firebox Front load Wood 8660-0010 $3,899 Stove, owner’s manual, included rear heat shield 5660-024, and parts box Specifications Specification Value Combustion system TruHybrid: primary, secondary, and catalytic tertiary combustion Catalytic combustor Applied Ceramics ACI-6M2 FIRECAT steel combustor Maximum heat output Up to 60,000 BTU/hr of cordwood (based on independent laboratory test results) EPA tested heat output range 12,600 to 33,600 BTU (output, under specific test conditions) Heating capacity Up to a maximum of 2,000 sq. ft. (factors unique to your home can reduce this) Efficiency 79% HHV weighted-average (EPA Method 28R and CSA B415-10) EPA certified emissions 0.6 g/hr (2020 particulate standard, crib wood) Burn time Up to 24+ hrs. (per current owner’s manual) HeatLife Up to 30 hours (per current owner’s manual) Firebox capacity 2.0 cubic feet Maximum log length Up to 18” (45.7 cm) Height 31 1/2” (80.0 cm) Width 26” (66.0 cm) Depth 21 1/4” (54.0 cm) Weight 450 lbs. (204 kg) Flue outlet 6” (152 mm) diameter, top exit Metal chimney 6” (152 mm) inside diameter, Type HT (UL 103 / ULC S629) Masonry chimney 6” (152 mm) inside diameter round flue or 8” x 8” (203 x 203 mm) square flue, code-approved with liner Certification Conforms to UL 1482-2022; certified to ULC S627-2021 (PFS File F20-632) The appliance has a 6-inch top flue outlet. The owner’s manual addresses connector and chimney systems routed toward and through the rear wall; its rear exit connection terminology refers to the venting route, not a convertible rear appliance outlet.Clearances and Hearth RequirementsThe values below are from the current Green Mountain 60 owner’s manual. Always follow the manual, your connector and chimney manufacturers’ instructions, and local codes. Dimensions are from the body of the stove unless otherwise indicated.Hearth and Floor ProtectionCombustible flooring must be protected with a continuous covering of noncombustible material such as tile, brick, slate, or glass. The Green Mountain 60 does not require an insulated hearth pad, and there is no R-value requirement. Measurement United States Canada Overall minimum floor protection (width x depth) 33 1/4” x 33 1/2” (85 x 86 cm) 42” x 43 1/2” (107 x 111 cm) Front extension, from edge of fuel-door opening 16” (41 cm) 18” (46 cm) Side extension 8” (21 cm), from edge of fuel-door opening to edge of hearth 8” (21 cm), from body of stove to edge of hearth Rear pipe-area protection 2” (6 cm) 2” (6 cm) Rear extension, from body of stove to edge of hearth See overall protection above 8” (21 cm) Installations over Luxury Vinyl Plank or Luxury Vinyl Tile flooring require extra consideration; consult the flooring manufacturer for maximum temperature recommendations.Clearance to Combustibles (Parallel and Corner Installations) Configuration Stove body to side wall Stove body to rear wall Flue centerline to rear wall Flue centerline to side wall Stove body to corner wall Flue centerline to corner wall Single-wall connector, included rear heat shield 13” (33 cm) 11” (28 cm) 16” (41 cm) 26” (66 cm) 7” (18 cm) 18.5” (47 cm) Single-wall connector, blower kit shield 96-57400 13” (33 cm) 11” (28 cm) 16” (41 cm) 26” (66 cm) 7” (18 cm) 18.5” (47 cm) Double-wall connector, included rear heat shield 13” (33 cm) 11” (28 cm) 16” (41 cm) 26” (66 cm) 7” (18 cm) 18.5” (47 cm) Double-wall connector, blower kit shield 96-57400 13” (33 cm) 5” (13 cm) 10” (26 cm) 26” (66 cm) 7” (18 cm) 18.5” (47 cm) Single-wall connector, no rear heat shield 13” (33 cm) 17.5” (45 cm) 21” (53 cm) 26” (66 cm) 10” (26 cm) 20.5” (52 cm) Alcove Installation Configuration Stove body to side wall Stove body to rear wall Flue centerline to rear wall Flue centerline to side wall Stove body to corner wall Flue centerline to corner wall Alcove, single-wall connector, included rear heat shield 13” 11” 16” 26” 7” 18.5” Alcove, single-wall connector, blower kit shield 96-57400 13” 11” 16” 26” 7” 18.5” Alcove, double-wall connector, included rear heat shield 13” 11” 16” 26” 7” 18.5” Alcove, double-wall connector, blower kit shield 96-57400 13” 11” 16” 26” 7” 18.5” Alcove requirement Unprotected surfaces Protected surfaces (NFPA 211) Minimum alcove width 52” (132.1 cm) See NFPA 211 Minimum alcove ceiling height from floor, single-wall connector 61.5” (156.2 cm) See NFPA 211 Minimum alcove ceiling height from floor, double-wall connector 61.5” (156.2 cm) See NFPA 211 Chimney Connector Clearances (Through-the-Wall, Top Flue Exit)Connector clearances apply to all sides of the connection pipe. For stove side-wall requirements, use the parallel clearances above. Configuration Rear of stove to rear combustible wall Vertical connector centerline to rear combustible wall Single-wall connector, included rear heat shield 11” (28 cm) 16” (41 cm) Single-wall connector, blower kit shield 96-57400 11” (28 cm) 16” (41 cm) Double-wall connector, included rear heat shield 11” (28 cm) 16” (41 cm) Double-wall connector, blower kit shield 96-57400 5” (13 cm) 10” (26 cm) Connector ceiling clearance Value Single-wall connector to unprotected ceiling 18” Single-wall connector to protected ceiling 9” Double-wall connector to ceiling Refer to the pipe manufacturer’s specifications Trim and Mantel Clearances Measurement Value Side trim clearance 5” Mantel height above floor 48” Maximum mantel depth 12” Trim thickness shown 4” Ceiling Refer to the applicable connector and ceiling requirements above These trim and mantel clearances also apply when the stove is positioned in an applicable masonry fireplace opening; however, the Green Mountain 60 Model 8660 is to be installed as a freestanding room heater and is not approved for installation in any factory-built fireplace.Chimney Height and DraftThe recommended minimum chimney height for a top-of-stove installation is 16 feet (4.9 m) off the floor, or 13 feet 6 1/8 inches (4.3 m) from the top of the stove. For the manual’s rear exit connection vent-routing configuration, the recommended minimum chimney height is 19 feet (5.8 m) off the floor, or 16 feet 6 1/8 inches (5.2 m) from the top of the stove. The recommended maximum chimney height is 30 feet (9 m). Proper chimney draft is required for safe, efficient operation; chimney sizing and installation must follow the current Model 8660 owner’s manual and the applicable chimney manufacturer’s requirements, and a stovepipe damper may be necessary where an installation produces excessive draft. The chimney must be at least 3 feet higher than the highest part of the roof opening through which it passes and at least 2 feet higher than any part of the roof within 10 feet, measured horizontally.Outside AirAn optional Outside Air Kit 96-53400 allows direct connection of the stove’s air intake to a minimum 3” (76 mm) diameter duct, supplied by others, leading outside the house. An adapter for 4” duct is available, Kit 90-53308. When using an outside air kit in Canada, the stove must be attached to the home’s floor using the shipping clips that came with the stove and fasteners long enough to attach securely to the subfloor. Outside air is required for all mobile-home installations.Mobile and Manufactured Home InstallationThe Green Mountain 60 may be installed in a mobile or manufactured home subject to special requirements, including: Install in accordance with 24 CFR Part 3280 (HUD) An outside air kit must be used in all mobile-home installations Permanently attach the stove to the floor using the shipping clips and appropriate fasteners Install a Mobile Home Chimney and Connector Kit conforming to UL 103 or ULC S629, including a stainless spark arrester cap Do not install in a sleeping room Maintain the structural integrity of the walls, floor, ceiling, and roof Ensure adequate combustion air is available Remove the chimney when transporting the mobile home Maintain an effective vapor barrier where the chimney or other components penetrate the exterior of the structure Included Equipment Green Mountain 60 Model 8660 woodstove Owner’s manual Parts box with internal parts and instruction sheet (shipped beneath the stove) Rear heat shield 5660-024 (included; distinct from the reduced-clearance heatshield supplied with the optional blower kit 96-57400) Shipping clips (used for floor attachment where required) Compatible AccessoriesAccessories are sold separately. Pricing shown is manufacturer suggested retail pricing. Accessory Part ID MSRP Compatibility or requirement note Blower & Reduced Clearance Heatshield Combo 96-57400 $649 Convection blower with rear heat shield; moves air up and across the stove and enables the reduced clearances listed for the blower kit shield Outside Air Starter 96-53400 $109 Connects the stove’s air intake to a minimum 3” outside-air duct (ducting supplied by others); required for all mobile-home installations 3” to 4” Outside Air Increaser 90-53308 $49 Adapter used with 96-53400 when a 4” outside-air duct is needed WarrantyHearthStone covers the Green Mountain 60 under its limited warranty to the original retail purchaser when the appliance is purchased from and installed by an authorized HearthStone dealer or their designated representative. Coverage periods vary by component: stone and cast iron components not listed elsewhere carry a Limited Lifetime warranty, defined as 10 years from the beginning of coverage; door handles, latches, and steel components and firebox are covered for 5 years; enamel finish, accessories, and glass are covered for 1 year. The Applied Ceramics FIRECAT catalytic combustor is warranted directly by Applied Ceramics with a two-year replacement provision and a prorated schedule thereafter. Exclusions and conditions apply, including damage from over-firing or improper installation. See the owner’s manual for complete warranty terms and registration instructions.About HearthStoneHearthstone Quality Home Heating Products, Inc. is based in Morrisville, Vermont, where it has built soapstone and cast iron heating products for decades. Each stove is handcrafted from precision-made components in cast iron, soapstone, steel, ceramic, and other materials. Visit our showroom to see the Green Mountain 60 and speak with our team about your installation.