Osburn Gusto Wood Burning Cook Stove

The Osburn Gusto Wood Burning Cook Stove is an EPA 2020 certified wood cook stove for 500 to 2,100 sq ft. It burns up to 8 hours on a load and takes a 6-inch chimney.

Who it's for

Right buyer. Owners of cabins, cottages, off-grid homes, and rural kitchens who will actually cook on a wood appliance during heating season — not just in a power outage — and who want a modern cookstove with EPA 2020 cordwood compliance, glass on both doors, mobile-home approval, and the parts and dealer support of Stove Builder International's North American network.

Mobile-home and dual-purpose-room friendly with the optional fresh-air intake kit, double-wall connector pipe, and structural attachment per the manual.

How it performs

The 75,000 BTU/hr figure on the spec sheet is a maximum-output rating based on dry cordwood at high loading density and short reload intervals. It is real, but it is a peak rating, not the average output across a full burn cycle of normal cooking-mode operation.

Good to know

• A cookstove costs more than a heater of similar BTU output.
• Install location is locked to the kitchen zone. A heating stove can go in a basement, a back room, a corner of a great room.
• One-season learning curve.

Dimensions

Dimensions from the specification sheet

Dimensions

Where it can go

The Gusto is designed for indoor installation in a permitted residential space — a kitchen, dining room, mudroom, sunroom, or great room with adjacent kitchen function. It is approved for mobile-home installation only when the manual's mobile-home requirements are met, including outdoor combustion air, insulated intake pipe, double-wall venting, attachment to the structure, and no sleeping-room installation. It is not approved for alcove installation, factory-built (prefab) fireplace installation, or outdoor or unconditioned-space installation.

Clearances to combustibles

Floor protection

A continuous non-combustible ember-protection surface is required on combustible flooring. Steel of at least 0.015" thickness, cement board, brick, sealed-grout ceramic tiles over a continuous non-combustible sheet, or another approved listed material may be used. Tile alone is not sufficient — the manual requires a continuous non-combustible sheet beneath any tile installation.

The pad must follow the manual's floor-protection diagram: in the USA, 16 inches in front of the door opening and 8 inches of side ember protection; in Canada, 18 inches in front and 8 inches on the other sides, subject to the manual notes and local code. Most installers extend the pad farther forward (24–36 inches) for cooking ergonomics, since the working zone in front of the oven is part of the cooking workspace. A standard non-combustible ember-protection pad is sufficient — no insulating (R-rated) hearth pad is required.

Clearances

The certification label on the back of the cookstove is the binding clearance for any installation. Reduced clearances are available with approved heat shields per the manual. Most installers default to double-wall connector pipe to gain the closer back-wall clearance. For mobile-home installations, use the manual's mobile-home clearance table: double-wall pipe is required, and platform-to-ceiling clearance is 84", not 72".

Documents

• Wood Burning Cookstove Installation & Operating Manual (PDF - 9.4 MB)
• Molding Installation Instructions (PDF - 2.6 MB)
• Gusto Dimensions (PDF - 0.6 MB)
• Maximum recommended heating area by climate zone (PDF)
• Osburn wood products brochure, USA edition, with dimension drawings (PDF)
• Osburn limited lifetime warranty
• EPA test reports
• Replacement parts

Details

Warranty

A one-time replacement limit applies to all parts with lifetime coverage. Warranty is void if the unit is used to burn anything other than seasoned cordwood, or if it is not operated according to the owner's manual. Damage caused by misuse, improper installation, lack of maintenance, overfiring, downdrafts, venting problems, or under-estimated heating area is not covered. Improper installation by anyone other than an authorized qualified technician voids the warranty.

Warranty claims are made through your Osburn dealer and remain subject to SBI/Osburn inspection, approval, and the current written warranty. Kaminos is the retailer for this cookstove and supports buyers through purchase; final warranty approval rests with SBI as the manufacturer. SBI's parts network is well-stocked — replacement bricks, baffle, secondary tubes, glass, gaskets, blower, and accessory kits are openly available at fair prices through the SBI dealer and parts vendor network.

Osburn may require photos or returned parts to support a claim; repair work covered by warranty requires prior manufacturer approval.

Coverage details can change by component and warranty revision; the current Osburn warranty controls.

Heat

From the specification sheet

Choices and prices

Options

The unit price is Osburn's 2026 list price for the wood cook stove alone. Options sold on this page add to it; those marked on request we add to your order by hand.

Base

Blower

Fresh air

Other options

What arrives

• Gusto cookstove with cast-iron painted cooktop, glass-fronted firebox door, glass-fronted oven door, and integrated 150–750 °F oven thermometer
• Stainless-steel oven (18" W × 15 5/16" D × 7 7/8" H) with removable cooking grill
• Decorative center molding in black (standard) or brushed nickel (configurable upgrade at order)
• C-Cast baffle and stainless-steel secondary-air tube assembly
• Refractory firebrick lining
• Pull-out ash drawer
• Universal chimney connector spigot, with adapter for double-wall pipe
• Removable wood-handle air control lever and wooden door handles
• Owner's installation and operation manual and product documentation

Sold separately

• Class A insulated chimney or stainless-steel masonry liner, sized for 6-inch flue
• Connector pipe (indoor stove pipe between the cookstove and the Class A chimney) — double-wall preferred, required for mobile-home installs
• Hearth pad sized to manual specifications, with continuous non-combustible sheet beneath any tile, extended forward for cooking ergonomics
• Optional 130 CFM blower kit with thermodisc — not included in the base price; recommended for open-plan rooms where heat distribution matters
• Optional 5-inch fresh-air intake kit — required for mobile-home installs, strongly recommended for tight kitchens with a powerful range hood
• Stove-top or flue thermometer for managing the firebox burn rate
• Internal oven probe thermometer for serious baking — the oven dial is approximate and reads ±50–100 °F off across the cookstove category generally
• Pin-type wood moisture meter
• Installation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance

Installation

Chimney requirements from the specification sheet

The Gusto takes a 6-inch flue and requires 0.05" H₂O (12 Pa) of draft. For new installations, a UL 103 HT (USA) or ULC S629 (Canada) Class A insulated chimney is required. Per the manual: minimum 12 feet from the cookstove top to the exterior chimney termination. The chimney must extend at least 3 feet above the highest point of contact with the roof, and at least 2 feet above any roof line or obstacle within 10 feet horizontally. The cookstove may also be connected to a code-compliant masonry chimney with either a clay liner or a suitably listed stainless-steel liner; if the masonry liner is square or rectangular and larger in cross-section than a round 6-inch flue, the manual says it should be relined with a listed 6-inch stainless liner.

Outside air

The manual requires the room to have an outside or fresh-air inlet at least 5 inches in diameter for proper draft. The fresh-air intake kit (sold separately) is mandatory for mobile-home installation, and is the cleanest solution for tight new-construction kitchens or kitchens with a powerful range hood — range-hood depressurization is a real risk in cookstove installs and can pull smoke out of the firebox or back-draft the chimney. Install it if the kitchen has a high-CFM hood, an HRV, a tight building envelope, or any combination of those. A smoke detector and carbon monoxide detector are required in the room where the cookstove is installed.

Codes and approvals

Code compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the cookstove is approved for; the AHJ approves what is permitted at your address. The Gusto's EPA 2020 cordwood certification is unusual in the cookstove category and matters in jurisdictions where local rules go beyond the federal cookstove exemption. Confirm local requirements before purchasing — particularly in EPA non-attainment counties and in HOA jurisdictions where new wood-burning installs may be restricted.

California Proposition 65

This product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov.

Planning the install

• Check with your building department and insurer: wood appliances need a permit in most places and an inspection after installation.
• The chimney is the other half of the system. It is sold separately and quoted from your installer's plan.
• Clearances and floor protection come from the manual and depend on the pipe and shields you choose. Send us your plan and we will check it.
• Burn seasoned wood below 20 percent moisture. Wet wood is the cause of most complaints about any wood stove.
• Special-order goods ship by freight.