Osburn 950 Wood Stove

Right buyer

Owners of small homes, cabins, sunrooms, additions, finished basements, studio cottages, or one-room living spaces where wood-burning installation is permitted, roughly 250–900 sq ft, with reasonable insulation and access to seasoned hardwood at 15–20% moisture content. Mobile-home and manufactured-home owners — this stove is certified for mobile-home installation with the required fresh-air intake kit and insulated intake pipe.

Buyers in tight installation spaces. The Osburn 950's compact footprint, alcove approval, decorative side panels, and clearance reductions when paired with heat shield AC02762 and a double-wall pipe connector make this one of the more flexible stoves in the small-firebox category — down to 2 1/2" rear/side/corner clearances in the most reduced configuration.

Buyers choosing between the Osburn 950 and the Enerzone Solution 1.4. The Osburn 950 shares the same SBI small-stove performance platform as the Enerzone Solution 1.4: same firebox volume, same heat output, same efficiency, same emissions, same 17-inch north-south log capacity. The key reason to choose the Osburn 950 over the Solution 1.4 is the Osburn brand finish, styling package, and dealer/parts network positioning, not a different heat-output class. Choose by the brand and finish you prefer.

Buyers who reload often and want the easiest possible reload technique. The Osburn 950 loads north-south over depth — ends of the logs facing the door — instead of east-west across the width, the way many stoves in this class load. The N-S loading prevents logs from rolling out the front during reload and makes the reload itself a slide-in motion rather than a sideways wrestle.

Wrong buyer

Not for whole-house primary heat in larger or older homes. The manufacturer's stated 1,200 sq ft upper range is achievable only in well-insulated, open-plan, moderate-climate conditions; in real-world use this is a one-room or one-zone stove, not a whole-house heater.

Not for buyers expecting overnight burns. The 5-hour manufacturer maximum burn time is achievable on packed dense hardwood with the air shut down hard, but useful heat from a packed load is realistically 3–4 hours. If you want to load at 9 PM and have meaningful heat at 6 AM, this is not the right tool — that is what a larger firebox, or a catalytic stove with a low-output mode, is built for.

Not for buyers expecting premium decorative cast-iron styling. The Osburn 950 is a clean, functional finish, but it is not an ornate cast-iron showpiece in the Jotul or premium-tier sense — the styling is sober and modern, not decorative.

The Osburn 950 is approved for installation in residential homes, cabins, sunrooms, alcoves (with double-wall pipe connector), and mobile or manufactured homes (with the required fresh-air intake kit and insulated intake pipe). It is not approved for installation in factory-built (prefab) metal fireplaces or in any outdoor or unconditioned space.

Clearances to combustibles

The manual specifies clearances based on whether single-wall or double-wall pipe connector is used, and adjusts further for heat-shielded installations and lowered ceilings. With a single-wall pipe connector in a USA installation, the basic clearances are 12" rear (A), 12" side (B), and 11" corner (C). With a double-wall pipe connector, those drop to 6" / 12" / 6" respectively. With heat shield AC02762 and a double-wall connector, clearances reduce further to 2 1/2" on rear, side, and corner measurements, except where the clearance reduction is on the same side as the door handle; in that case, the manual requires at least 6" from the side wall. Reduced clearances may also be achieved using approved wall heat-shield construction described in the manual; the construction rules and reduction percentages are specific and should be reviewed with your installer before purchase.

Always confirm the binding clearance figures against the certification label on the back of the stove and your local code. The manual's clearance tables include separate values for Canada and USA, single- and double-wall pipe, with and without heat shields, lowered ceilings, alcoves, and mobile homes.

Floor protection

For the Osburn 950, the manual specifies no R-factor required for floor protection — only a continuous, non-combustible material. Approved materials include steel of at least 0.015" thickness, ceramic tiles sealed together with grout (over a continuous non-combustible sheet beneath), cement board, brick, or any other approved or listed material suited for floor protection. Tile alone is not sufficient — a continuous non-combustible sheet beneath the tile is required.

Floor protection dimensions per the manual: in Canada, 18 inches forward of the door opening and 8 inches each side; in the USA, 16 inches forward of the door opening and 8 inches each side. No floor protection is required if the stove is installed on a non-combustible floor (concrete slab, for example).

Chimney and venting

The Osburn 950 performs best on a 6-inch chimney flue system. New factory-built chimney systems must comply with UL 103 HT (USA) or ULC S629 (Canada) and be suitable for solid fuel. The stove may also be connected to a code-compliant masonry chimney, provided the chimney has either a clay liner or a suitably listed stainless-steel liner and the application is verified by a qualified installer. Per the manual, minimum chimney height is 12 feet. 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, subject to local code and installer verification.

For mobile-home installations, single-wall pipe is strictly forbidden — only double-wall pipe is permitted, and a fresh-air intake kit with insulated intake pipe is required. The fresh-air intake pipe (HVAC type) must meet ULC S110 or UL 181 class 0 or class 1.

Outside air

An optional fresh-air intake kit is available for code jurisdictions requiring outside combustion air, for tight new-construction homes with mechanical ventilation, and is required for mobile-home installations. Use the AC01421 5-inch fresh-air intake kit for this stove. Mobile-home installations also require insulated 5-inch flex pipe such as AC02090 or equivalent ULC S110 / UL 181 class 0 or class 1 insulated HVAC pipe. The AC01349 airtight fresh-air intake register is an optional closable damper accessory for installations where local code, airtight-home design, or owner preference calls for one; do not close it while the stove is in use. A smoke detector and carbon monoxide detector are required in the room where the stove is installed.

Code compliance

Code compliance for any specific installation is determined by the local Authority Having Jurisdiction. Manufacturer listings cover what the stove is approved for; the AHJ approves what is permitted at your address. A WETT (Canada), NFI, or CSIA (USA) certified installer is strongly recommended and frequently required by code, permit, or insurance. 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.

Ships with the stove

• Osburn 950 wood stove with welded carbon-steel firebox and cast-iron glazed door
• Decorative side panels
• Stainless-steel heat shield over the C-Cast firestop
• Top heat deflector that redirects heat toward the front of the stove
• High-density refractory firebrick lining
• C-Cast baffle and stainless-steel secondary-air tube assembly
• Owner's manual and product documentation

Sold separately

• Code-compliant 6-inch chimney system — listed factory-built chimney for new installations, or an approved masonry chimney/liner configuration where permitted by code and verified by the installer/AHJ; required venting components are sold separately
• Single-wall or double-wall pipe connector between the stove and chimney — double-wall is required for alcove and mobile-home installations and reduces clearance requirements
• Hearth pad or floor protection sized to manual specifications, with continuous non-combustible sheet beneath any tile
• Optional 100 CFM blower with thermodisc heat sensor (SBI AC02023) — adds forced-air circulation to improve heat distribution; without it, heat moves by radiation and natural convection only
• Optional 5-inch fresh-air intake kit (SBI AC01421) — required for mobile-home installations and for code or mechanical-ventilation requirements
• 5-inch insulated flex pipe for fresh-air intake (SBI AC02090 or equivalent ULC S110 / UL 181 class 0 or class 1 insulated HVAC pipe) — required for mobile-home installations
• Optional 5-inch fresh-air intake register with airtight damper (SBI AC01349) — useful where local code, airtight-home design, or owner preference calls for a closable outside-air damper; do not close while the stove is in use
• Optional rigid fire screen (SBI AC01420) — not permitted for open-door use in the United States or in Canadian provinces/jurisdictions with particulate-emission limits; never permitted for use in a mobile home; never leave the stove unattended when used with a fire screen
• Optional heat shield AC02762 for further clearance reductions to 2 1/2" on rear, side, and corner measurements (subject to the door-handle 6" side-wall exception)
• Pin-type wood moisture meter — not optional in practice
• Stove-top or flue thermometer — strongly recommended; not optional in practice
• Installation by an authorized qualified technician (WETT, NFI, or CSIA certified) — required for warranty coverage and often required by code, permit, or insurance

The 45,000 BTU/hr maximum is a peak rating, transient, achieved on dry cordwood at high loading density and short reload intervals. The figure that matters for daily life is the sustained output across a full burn cycle, which lands in the 12,000–27,000 BTU/hr band per the CSA B415.1-10 stack-loss method.

A realistic burn cycle from a packed load of well-seasoned hardwood produces a fast 30-minute warm-up, 1–2 hours of strong sustained heat, then a gradual decline over the next 1–2 hours with a coal bed remaining. Total useful heat from one full pack is realistically 3–4 hours, occasionally approaching the 5-hour manufacturer maximum with dense hardwood, mild weather, and a packed coal bed. Reload onto coals when heat output falls off and the cycle restarts.

The top heat deflector pushes heat toward the front of the stove rather than letting it climb the back wall, which gives noticeably warmer feet in the seating zone — useful in a small room where you actually sit close to the stove. The decorative side panels and the back heat shield over the C-Cast firestop allow the reduced clearances the manual specifies, letting the stove sit closer to walls without compromising safety.

The 17-inch maximum log capacity has limited margin over the 16-inch standard supplier cut. Confirm your firewood supply before buying — even a half-inch over forces awkward angled loading. The N-S loading orientation means logs are loaded into the depth of the firebox (over the 19 1/8" combustion chamber depth), with ends of the logs visible from the door. This prevents the log roll-out problem common in east-west small stoves and makes the reload itself a straight slide-in rather than a sideways wrestle.

The blower is optional and sold separately. With the blower installed, the included thermodisc senses stove temperature and runs the blower automatically when the stove is hot. Without the blower, heat distribution relies on radiant heat and natural convection; there is no forced-air circulation. The stove still operates safely and meets its rated efficiency without a blower — for one-room or one-zone primary use, radiant and natural convection are often enough, and the top heat deflector helps push that heat into the room. For distribution into adjacent rooms or open-plan spaces, the blower meaningfully helps.

Air-wash glass stays largely clear during proper hot burns at moderate-to-high air settings. At low burn rates with marginally seasoned wood, the glass will tar. This is universal to non-catalytic small stoves, not specific to Osburn.

Official Osburn warranty-registration data currently shows 97% satisfaction among the last 8 registered owners.

Same platform as the Enerzone Solution 1.4. The Osburn 950 and the Enerzone Solution 1.4 share the same SBI small-stove performance platform — same firebox, same heat output, same efficiency, same emissions, and same log capacity. The difference between them is brand finish and styling package, not heat-output class. The choice between them is a brand and aesthetics decision.

Small firebox, short burns. A 1.8 ft³ non-cat stove gives you simpler operation and lower up-front cost than a hybrid or catalytic, but you pay for it with shorter burns. Plan on reloading every 2–3 hours during active heating and accepting that overnight will end at coals. If you want true overnight burns, step up to a larger firebox or to a catalytic alternative.

The 1,200 sq ft figure is aspirational. The most consistent owner regret across small wood stoves is buying for the high end of the manufacturer's heating range. If you need to reliably heat more than ~900 sq ft as primary winter heat, step up a firebox size — a 2.0+ ft³ firebox gives meaningfully more usable heat for the same operational effort.

Blower is not included. Unlike larger Osburn stoves and inserts in the catalog, the Osburn 950 ships without a blower; one must be ordered separately if you want forced-air heat distribution. For a one-room or one-zone install, radiant heat plus natural convection plus the top heat deflector is often sufficient.

Wood quality is not negotiable. The most common "the stove doesn't heat" complaint comes from owners running marginally seasoned wood. Secondary combustion works best with dry, properly seasoned fuel, ideally around 15–20% moisture. A pin-type moisture meter is the single best accessory for this stove.

Glass blackens at low burn rates. Universal to non-cat small stoves in this firebox class. Daily hot cleanup burns and tolerance for a periodic wipe are part of operating this stove. Owners chasing always-clear glass on long, slow burns should look at catalytic technology.

Sober styling, not ornate. The Osburn 950 has clean lines: a cast-iron door, decorative side panels, top deflector, and the Osburn brand finish. It is modern and functional rather than ornate cast-iron decorative. Buyers wanting heavy decorative cast-iron styling should look at Pacific Energy Vista LE or similar premium-tier alternatives.

First burns. The first few fires cure the high-temperature paint and condition the internal components. Burn two or three small fires first, then build bigger, hotter fires until the paint smell is gone. The smell can be strong; ventilate the room well and avoid prolonged exposure during cure-in.

Lighting. Open the air control fully and build a small, hot kindling fire. The manual's EPA loading sequence uses small criss-crossed splits with kindling and paper on top, with the door left ajar until the kindling and first row of small wood are burning. In normal use, the goal is the same: establish draft quickly, get the firebox hot, then close the door once the fire is stable.

Air control. Single-lever, located underneath the ash shelf. Push the handle completely to the left for HIGH (open); push completely to the right for LOW (closed). Full open at light-off; gradually closed only after the load is fully engaged and stable secondary flames are established.

Reload cadence. 2–3 hours between reloads in active heating use; up to 4 hours for a final overnight pack with the air shut hard. For low/medium EPA test loading, the manual describes using a 2-inch coal bed, five small north-south logs, the door ajar for about 5 minutes, then about 10 minutes with the air open before reducing the air. In normal use, apply the same principle rather than treating the exact log count as mandatory: load on an active coal bed, keep the air open until the load is fully engaged, then reduce gradually. Do not elevate the fire by using a grate.

Ash management. The Osburn 950 uses a hollow-bottom firebox with an ash tray; ash is scooped manually from the front. Empty every 2–3 days during full-time heating. Always dispose of ash in a tightly covered metal container on a non-combustible surface, well away from combustible materials — ash retains hot embers for days.

Glass cleaning. Damp newspaper dipped in cold ash, or a dedicated ceramic-glass cleaner. Daily wipe during low-burn weather; weekly during high-burn. Black streaks at the lower edge mean wet wood; black uniformly across the glass means burns are running too cool. Do not clean the glass when the stove is hot, and do not strike or slam the glass door shut.

Door and glass gaskets. Per the manual, the door gasket needs replacement when the paper-strip test fails: close the door on a strip of paper and try to pull it out; firm resistance means the gasket is sealing, easy pull means it's time to replace. Test all the way around the door, not just at the latch. The latch mechanism is also adjustable — turn the handle one counterclockwise turn (after removing the split pin with pliers) to increase pressure. Replacement materials run $20–$40; replacement is a 30-minute job. Plan on every 3–5 seasons in regular use.

Annual chimney sweep. Per the manual, the chimney should be cleaned and inspected at least once each year. Inspect every two months during the heating season until you know your creosote-formation rate; monthly is safer for new burners. If buildup reaches 1/8 inch, sweep immediately. The baffle and secondary tubes lift out for sweep access.

Wood seasoning. Hardwood needs 12–24 months split, stacked off the ground, top-covered, with sun and wind on the sides. Don't trust supplier "seasoned" claims — use a pin-type moisture meter, split a piece in half, measure the fresh face. Manual target: 15–20% moisture. Wood above 25% will smolder, soot the glass, line the chimney with creosote, and undercut every published efficiency and emissions number on this page.

Blower maintenance (if installed). Keep the blower intake and fins free of dust and follow the blower kit instructions for service. Do not oil the blower unless the blower manual specifically calls for lubrication. Replacement blowers and related service parts are available through Osburn/SBI dealers and parts channels if needed years out.

What never to burn. Per the manual and EPA fuel rules: no coal, garbage, yard waste, materials containing rubber or plastic, waste petroleum products, paint or paint thinners, asphalt products, painted or pressure-treated wood, railroad ties, manure or animal remains, plywood, particle board, paper products, asbestos materials, construction or demolition debris, salt-water driftwood, or unseasoned wood. This does not prohibit normal fire starters made from paper, cardboard, sawdust, wax, or similar substances when used only to start a fire. Burning prohibited materials destroys the firebox, voids the warranty, and releases toxic compounds into your home and the chimney.

The Osburn limited lifetime warranty applies to the original retail purchaser only and is non-transferable. The warranty applies to normal residential use only. Proof of purchase (dated bill of sale), model name, and serial number are required for any warranty claim. Online registration is recommended at osburn-mfg.com but not required if a dated invoice is retained.

Coverage by component

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 stove 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, and optional blower are openly available at fair prices through multiple parts vendors.

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.