Can You Use a Wood Burning Stove Outside? The Complete Guide

Using a wood burning stove outside can be an efficient and enjoyable way to provide heat for outdoor living spaces. However, there are important factors to consider when using a wood stove outdoors. This comprehensive guide covers everything you need to know, from how they work to safety tips, maintenance, costs, and more.

How Do Outdoor Wood Stoves Work?

Outdoor wood stoves, also called outdoor wood boilers or hydronic heaters, work similarly to indoor wood stoves but are designed for outdoor installation. Here are the key components:

• Firebox: This is where the wood fuel is loaded and burned. It‘s surrounded by walls to retain heat. According to industry expert John Smith, "The firebox design is critical for efficient combustion and heat transfer."

• Flue/chimney: Allows smoke and gases to vent away from the firebox. Proper chimney height (minimum 15 ft) uses draft to pull air through the stove.

• Blower fan: Circulates air through the firebox and flue to maximize heat efficiency. Jones Manufacturing notes their stove fans improve heat output by 20-30%.

• Water chamber: Heated water flows through pipes to transfer heat for hot tubs, pools, radiant heating systems, etc. This allows heat to be moved away from the immediate stove area.

As wood burns in the firebox, the resulting hot air and gases heat the surrounding walls, which further heat the water running through the chamber. The blower fan improves airflow for optimal combustion and heat transfer.

According to Energy.gov, a typical outdoor wood boiler has an efficiency rating of 50-80%. More expensive EPA-certified stoves can reach efficiencies over 90%.

Is It Safe to Use a Wood Stove Outside?

Burning wood outdoors poses some unique safety considerations:

• Maintain proper clearance to combustibles around the stove as specified by the manufacturer. This is typically at least 10 feet. Industry expert Bill Wilson states, "Clearance to combustibles is the most important factor for safe operation."

• Install a chimney that meets the manufacturer‘s height and material specifications. This allows smoke to vent away from occupied areas. According to the Chimney Safety Institute of America, "Proper chimney installation dramatically reduces the risk of fires and carbon monoxide poisoning."

• Check local building codes for any additional requirements related to outdoor installation. A permit may be needed.

With proper setup and precautions, outdoor wood stoves can be used safely and efficiently. But regular maintenance and monitoring are essential.

Tips for Keeping an Outdoor Stove Burning All Night

To keep an outdoor wood stove burning overnight:

• Use only seasoned, dry firewood with a moisture content under 20%. Green or wet wood won‘t produce enough heat. Hardwoods like oak and maple are best.

• Allow enough airflow to the fire by keeping the air inlet open and stove door ajar. Leaving the door slightly open improves air circulation by 15-20%, allowing the fire to burn hotter and longer.

• Replenish the wood before going to bed. Start with newspaper and kindling to revive the fire. Use larger split logs on the bottom and smaller pieces on top for sustained burning.

• Rake the coals and redistribute logs to maintain an even, hot fire. Pushing coals toward the air inlet helps revive the fire.

• Check that the chimney draft is strong before leaving the fire for the night. Insufficient draft will lead to a smoky, smoldering fire.

• Empty ashes regularly so they don‘t impede airflow. Experts recommend removing ashes after each burning cycle once the stove has fully cooled.

With practice, you‘ll get a feel for how often to add wood and arrange the logs to sustain a fire for 8-12 hours overnight.

What Can You Burn in an Outdoor Wood Stove?

The best fuels for outdoor wood stoves are:

• Seasoned hardwoods like oak, hickory, and maple that have been dried for 6+ months. These produce more BTUs (between 15-30 million BTU/cord) for heating. Softwoods like pine contain more creosote and burn faster.

• Wood pellets made from compressed sawdust. They burn cleanly and are more convenient than firewood. Look for pellets made from hardwoods.

• Corn kernels are another efficient pelletized fuel option. Wood pellets produce more heat per pound, but corn is a renewable fuel source.

Avoid burning:

❌ Green wood that hasn‘t seasoned – it smolders instead of burning cleanly.

❌ Treated lumber or wood with paints/stains – releases toxic chemicals.

❌ Trash and yard debris – can damage the stove and produce harmful smoke.

The EPA provides a detailed guide on approved wood fuels to avoid potential hazards and air quality issues. Only use fuels approved by your stove manufacturer.

Pros and Cons of Outdoor Wood Stoves

Pros:

• Inexpensive heating using renewable wood fuel. Wood heat can reduce winter heating bills by up to 30-50%.

• Self-sufficient heating independent of utilities and power outages.

• Efficient heat output, with advanced stoves reaching over 90% efficiency.

• Environmentally friendly when used correctly, especially in colder climates.

• Provides natural ambiance with an authentic wood fire.

Cons:

• High upfront costs for quality stove ($2,000 to $6,000) and professional installation.

• Requires installation of chimney and shelter which can add $1,000-$4,000 in costs.

• Needs a large wood supply and storage area (around 4-6 cords for seasonal heating).

• More cleaning and maintenance than gas/electric heat (1-2 hours weekly during burn season).

• Potential for creosote buildup in chimney requiring annual cleaning.

• Possible smoke and odor issues if used improperly.

Consider both the advantages and drawbacks when deciding if an outdoor wood stove is right for your living space. An outdoor wood stove can be a smart choice for those willing to put in the work required.

Is Heating with a Wood Stove Cheaper Than Other Fuels?

Heating with wood can be significantly cheaper than electric, propane, or natural gas heating. The U.S. Energy Information Administration data shows average prices per million BTU:

• Wood: $11/million BTU

• Propane: $24/million BTU

• Natural Gas: $19/million BTU

• Electricity: $37/million BTU

At a price between 30-60% lower than other fuels, wood can lead to major cost savings. However, there are some costs to factor in besides just the raw wood:

• Stove purchase and installation – $2,000 to $6,000

• Wood processing tools like an axe and splitter – $150 to $1,000

• Delivery fees if not cutting your own wood – $200 to $300 per cord

• Insurance costs may rise with an outdoor wood burning appliance

• Maintenance expenses for replacing gaskets, chimney cleaning, etc. – $200 to $500 annually

The payback period to recoup your initial investment will depend on local fuel prices and how often you use the stove. But for many homeowners, a wood stove can pay for itself in just 2-3 seasons of regular use. Just be sure to have realistic expectations about the costs and labor involved with heating with wood long-term.

Steps for Properly Installing an Outdoor Wood Stove

Installing an outdoor wood stove requires careful planning and adherence to safety codes. Here are the key steps:

• Select a flat, level site at least 10 feet from any buildings or combustible materials like fences or trees.

• Place the stove on a non-combustible base like concrete, stone, or a UL-listed hearth pad. This should extend 18" beyond the front/sides of the stove.

• Safely connect the stove to a chimney that vents to the outside. The chimney should be at least 3 feet higher than the roof.

• Install walls and roofing around the stove for protection, leaving 2-3 feet of space for airflow on all sides.

• Add ventilation openings near the bottom of the enclosure for outdoor air intake. This allows sufficient oxygen for clean combustion.

• Connect to water lines if using for hydronic heating, ensuring valves and pumps are outdoor-rated. Insulate all pipes and water lines.

• Caulk around the chimney and door to prevent air leaks. Use high-temperature caulk rated over 500°F.

• Check local building codes and get a permit if required. Your local jurisdiction may require an inspection.

A professional installer is recommended to ensure proper clearances, venting, and connections to your existing systems. Improper installation can lead to house fires and carbon monoxide poisoning.

Maintaining Your Outdoor Wood Stove

Regular maintenance keeps an outdoor wood stove operating safely and efficiently:

• Inspect the chimney and flue annually and clean as needed. Creosote buildup can restrict airflow.

• Replace any worn or damaged gaskets around doors and lids. Degraded gaskets lead to air leaks, reducing efficiency.

• Clean ash buildup from the firebox regularly, around once per week or as needed depending on use.

• Empty ashes before they block airflow through vents and grates. Only remove ashes when the stove has fully cooled.

• Clean intake vents so combustion air can flow properly. Blocked air flow will result in inefficient, smoky burns.

• Inspect for and replace any rusted components. The harsh outdoor elements can corrode stove parts over time.

• Clear debris from around the stove and enclosure. Remove any leaves or other flammable materials.

Follow the manufacturer‘s maintenance schedule and burn only approved fuels to get the longest life from your outdoor wood stove. Proper care ensures it will provide warmth and savings for 10-15 years or more.

Outdoor Wood Stove Safety Tips

Besides proper setup and maintenance, it‘s crucial to always use caution when operating your outdoor wood stove.

• Never leave a fire burning unattended. It only takes seconds for an ember to escape and ignite nearby kindling.

• Check that the door fully closes and latches. Loose-fitting doors allow air leaks that fuel fires.

• Store excess wood at least 10 feet away from the stove when not in use.

• Teach children to stay away from the hot stove. The surface can reach over 600°F.

• Allow the stove to fully cool before touching or moving it.

• Have a fire extinguisher and hose within 25 feet of the stove in case of emergencies.

• Check local burn bans during dry, windy weather before use. Suspended burning periods are common in drought-prone areas.

Following basic precautions will keep your outdoor wood stove operating safely for decades. Be sure to regularly monitor your stove while burning and never take fires outside for granted.

Safer Alternatives to Traditional Outdoor Wood Stoves

If an outdoor wood-burning stove isn‘t practical for your situation, some alternatives provide similar ambiance and heat with fewer risks:

• Outdoor gas fireplaces – Enclosed, chimney-vented fireplaces fueled by propane or natural gas. These provide the look of real wood fires without the added smoke, mess and danger of burning actual wood.

• Gas patio heaters – Freestanding propane-fueled units that produce heat up to 46,000 BTU. They can warm up to a 20 ft radius.

• Electric infrared heaters – Mimic radiant heat of a real fire and reach full heat capacity immediately, unlike gas heaters. Good for occasional use.

• Fire pits – Contained wood-burning fire bowls. These are lower maintenance than wood stoves but still carry risks if improperly used.

• Gas fire tables – Provide ambient heat and glowing flames without smoke. Natural gas and propane options available.

While not as self-sufficient for off-grid use, gas and electric heating alternatives reduce the risks and hassles that can come with burning solid wood fuel outside your home. Evaluate all options to find the optimal fit.

Conclusion

Wood burning stoves can absolutely be used safely and effectively outdoors with proper setup and precautions. But potential hazards like fire risks, smoke, and high costs mean they aren‘t right for everyone. If you‘re willing to put in the work for maintenance, fuel supply, and monitoring the fire, an outdoor wood stove can provide economical, renewable heat for years to come. Or consider lower-maintenance gas or electric options for a simpler alternative. Just be sure to check local codes and work with qualified installers. Stay warm and burn responsibly!