Do smokeless fire pit inserts work?

Smokeless fire pit inserts have become increasingly popular in recent years as a way to enjoy the ambiance of an outdoor fire without the smoke. But do these inserts actually work to reduce smoke? Let’s take a closer look.

What are smokeless fire pit inserts?

Smokeless fire pit inserts are special accessories designed to contain smoke and circulate airflow in order to reduce smoke output from a fire pit. They are an enclosed metal box that you place inside an existing masonry or metal fire pit.

The insert contains multiple air inlets around the base that allow air to enter and fuel the fire from underneath. This oxygen inlet draws air up through the bottom vent holes and into the fire chamber. As the fire burns, smoke enters the insert through vents in the top where it gets reburned at high temperatures, turning much of the particulate matter into airborne ash rather than smoke.

The insert also contains an exhaust outlet or chimney at the top that facilitates airflow up and out. This continuous supply of oxygen and ventilation allows for more complete combustion and significantly reduces smoke compared to an open pit.

How do smokeless fire pit inserts reduce smoke?

There are a few key mechanisms by which smokeless inserts are able to reduce smoke output:

Improved airflow: The multiple air inlets at the base of the insert allow for much better airflow through and around the fire compared to a standard open pit. More oxygen flow leads to more complete combustion of the wood.

Reburning smoke: The containment of the insert forces smoke back down into the firebox where extremely high temperatures (up to 1800°F) cause it to reburn and convert particulate matter into airborne ash rather than smoke.

Directing airflow: The chimney or exhaust directs the airflow up and out which efficiently vents smoke. This creates constant airflow rather than allowing smoke to be trapped near the fire as it does in an open pit.

Insulation: Insulated inserts retain heat to maintain the high temperatures needed for reburning smoke. They also protect the outside from getting too hot.

Embers contained: Keeping embers fully contained prevents stray sparks that can cause extra smoke. It also improves safety.

So in summary, the heating airflow, smoke recycling, insulation, and containment provided by a smokeless insert all work together to greatly reduce smoke production for a much cleaner burn.

How much smoke do they reduce?

Most quality smokeless fire pit inserts are designed to reduce smoke output by up to 90% compared to an open outdoor fire pit.

By forcing the smoke back into the high-temperature firebox for reburning, these inserts can eliminate up to 90% of the particulate matter that makes up smoke before it has a chance to exit the chimney.

The exact smoke reduction will depend on a few factors:

– Fire pit insert design – High end models specifically engineered for smoke reduction work best.

– Fire tending – Following proper burning techniques is important for clean burns.

– Fuel type – Well-seasoned dense hardwoods produce less smoke.

– Wind conditions – Wind can disrupt airflow.

Under optimal conditions, a high-quality insert combined with proper fire tending can reduce smoke output by up to 95%. But on average, you can expect a smoke reduction in the range of 80-90% compared to an open pit.

Do smokeless inserts produce any smoke?

While smokeless fire pit inserts significantly reduce smoke, they do not completely eliminate all smoke. There are a few reasons some minimal smoke will still be produced:

– The fire needs oxygen when first igniting and heating up which can cause initial smoke.

– Poor fire tending techniques can lead to smoldering and intermittent smoke.

– Windy conditions may redirect some smoke out of the chimney.

– The exhaust removal isn’t 100% efficient so a small percentage of smoke particles may escape.

So while they are called “smokeless”, the inserts do not produce literally zero smoke. However, the smoke output is drastically minimized compared to an open pit. Under good conditions, the smoke produced is very minimal and stays mostly contained to the chimney output.

Do smokeless inserts produce odor?

Smokeless inserts greatly reduce the amount of smoke produced, which in turn also reduces the amount of associated wood-burning odor. Smoke particles are a major contributor to the characteristic campfire scent.

Less smoke means less odor transported through the air. Whereas an open fire pit can make an entire yard or patio smell strongly of a campfire, smokeless inserts confine the odors primarily to the vicinity around the chimney.

However, some slight wood-burning odor is unavoidable. Homeowners sometimes overlook this and forget to warn guests, who are surprised to encounter the smell. The odor is usually minimal, but it’s important to be aware that smokeless inserts do still produce some aroma.

Proper burning techniques and well-seasoned hardwood can help further reduce odors. Consider potential odor an advantage over smoke but not a guarantee of being completely odor-free.

Do they require special maintenance?

Smokeless fire pit inserts require some simple regular maintenance to keep them functioning properly:

– Remove ash buildup by scooping or vacuuming out the firebox periodically. Too much ash accumulation can block airflow. Monthly removal is usually sufficient depending on usage.

– Keep the insert covered when not in use to prevent moisture damage and rusting.

– Inspect gaskets and seals seasonally. Replace if worn out or cracked. Proper sealing is essential for containment and airflow.

– Clean the chimney termination cap periodically to remove any built up creosote or debris. Blockages can redirect smoke.

– Check the status of baffles/heat shields if present. Replace if broken or warped.

– Confirm all vents/openings are clear and free of obstruction.

– Review manufacturer instructions for any other suggested maintenance.

With proper use and maintenance, a quality smokeless insert can provide many years of enjoyable smoke-free outdoor fires.

What are the main pros of smokeless inserts?

There are several major benefits to using a smokeless fire pit insert:

Greatly reduces smoke: This is the primary benefit. Smoke is decreased by up to 90% for much more enjoyable outdoor fires.

Reduces odor: Less smoke also means less pervasive wood-burning smell. Odor is confined nearer the fire pit.

Improves ambiance: You can clearly see and appreciate the fire with minimal smoke obscuration. Creates brighter, better ambiance.

Enhances safety: The enclosed design with screened inlet vents improves safety and prevents stray embers.

Convenience: Easy to install and use. Converting an existing pit to smokeless operation is simple.

Heat control: Adjustable air inlets allow you to better control air flow and heating power.

Durability: Heavy-duty steel construction is extremely durable for many years of use.

For homeowners that love outdoor fires but hate smoke, smokeless inserts are a game-changer. You get all the ambient lighting and cozy feel of an outdoor fire with only a fraction of the smoke.

What are the main cons of smokeless inserts?

Some potential downsides to consider include:

Cost: Smokeless inserts are more expensive than an open fire pit, typically several hundred dollars or more depending on the model.

Installation required: Proper installation into an existing fire pit is important for correct function. Improper DIY installation can negatively impact performance.

Limited sizes: Smokeless insert sizing is fixed so you need to ensure good fit with your existing fire pit dimensions.

Potential odor: Smoke is greatly reduced but some fire smell is unavoidable near the chimney output.

Fire visibility: The enclosed sides reduce fire visibility from certain angles. Fire is best viewed centered in front of the insert.

requires maintenance: Occasional cleaning and component inspection is needed to keep the insert functioning optimally.

For most homeowners seeking a smoke reduction solution for their fire pit, the benefits of cleaner air and improved experience outweigh these limitations. But the cons should be considered when deciding if investing in a smokeless insert is right for your needs and preferences.

What types of smokeless inserts are available?

There are a few main options when shopping for a smokeless fire pit insert:

Single-walled inserts – Typically made from a single layer of stainless steel. Less expensive but radiates more heat outward. Better for pre-existing pits with more insulation.

Double-walled inserts – Sandwich style with inner and outer walls of stainless steel with space for air in between. Better insulation keeps more heat directed upward. Good for less insulated pits.

Custom builds – Available from specialty companies and made-to-order to fit your exact pit dimensions. Offers optimal fit but at a higher cost.

DIY conversions – Some homeowners convert an old barbecue grill or other steel box into a smokeless insert themselves. Usually less effective but very affordable.

When shopping, look for a reputable brand known for excellent craftsmanship and engineering. High-quality construction is crucial for proper smoke circulation. Seek out good warranties and verified customer reviews as well.

What are the best smokeless fire pit inserts?

Some of the top-rated and most recommended smokeless fire pit inserts include:

Solo Stove Bonfire – Stainless steel double-walled design made in the USA. Includes removable ash pan and wire mesh screen. $349.99 MSRP.

Breeo X Series Smokeless Fire Pit – Available in 24” and 36” sizes. Double-walled with AirFlow System. $399-$499 MSRP.

Tiki Brand Fire Pit – Low smoke and odor. Stainless steel or weatherproof coated steel options. $350-$500.

Spark Screen X-24 – Convert your existing pit with this 24” double-walled insert. $189.95 MSRP.

Pleasant Hearth Martin Extra Deep – 36” wood-burning insert with heat shield for maximum heat control. $299.99 MSRP.

These options have excellent reviews and reputations for providing substantial smoke reduction. Prices vary based on dimensions and materials. Seek an insert sized appropriately for your existing fire pit space.

Can any fire pit be converted to smokeless?

The majority of wood-burning masonry and pre-fabricated steel fire pits can be converted to smokeless operation with the right insert. Here are some factors to consider when assessing fire pit compatibility:

– Fire pit shape – Square, rectangle and circular pits usually work well. Unusual shapes may be harder to fit an insert into.

– Fire pit dimensions – The insert needs to fit down into the pit with maximum coverage of the footprint.

– Fire pit depth – Shallow pits under 12” deep may have trouble containing heat and smoke. At least 15-20” depth is ideal.

– Airflow – Pits that are too tightly enclosed hinder airflow. Some venting may need to be added.

– Construction materials – Masonry and thick steel are fine. Avoid highly combustible materials right next to insert.

– Fuel type – Designed for wood burning. Not for gas, coal, pellets.

With good dimensions and construction, most standard fire pits can accommodate a smokeless insert. Custom sizing or modification may occasionally be required for optimal functionality.

How much do smokeless inserts cost?

Smokeless fire pit insert prices typically range from $200-$500 depending on:

– Size – The larger the insert dimensions, the higher the price.

– Construction – Double-walled stainless steel is more expensive than single wall or coated steel.

– Brand – Premium brands made in USA cost more than imports.

– Features – Advanced engineering features increase cost.

– Options – Added accessories like heat shields, ash pans, covers raise the price.

$200-$300 can get a basic single-wall stainless insert from Home Depot or Amazon. Well-engineered double-wall models from specialty brands run $350-$500+ and are the better performing options. Basic DIY conversions can sometimes be done for under $100.

In terms of return on investment, the cost is usually well worth it for the substantial smoke reduction achieved with a quality insert versus always tending smoky nuisance fires.

Can you burn pellets in a smokeless insert?

No, smokeless inserts are designed solely for use with natural firewood. They should never be used to burn wood pellets.

Attempting to burn pellets in a smokeless insert could be dangerous and will likely result in poor performance. There are a few reasons pellet burning won’t work well:

– Pellet fed hoppers and augers don’t pair with inserts.

– The high air flow will scatter pellets and cause flare ups.

– Pellet ash may accumulate too quickly and block airflow.

– Insufficient air circulation can lead to inefficient pellet burn.

– Moisture from pellets may rust the insert faster.

– No temperature controls like a pellet grill.

For controlled wood pellet burning, a dedicated pellet grill or freestanding pellet stove is a much better appliance choice over trying to rig a system with a smokeless insert. The insert is not designed for handling pellet fuel. Stick to dry firewood for a safe and effective burn.

Can you install a smokeless insert in existing fire pit?

Yes, most standard fire pits can be retrofitted with a smokeless insert with minimal effort. Here are the basic steps for DIY installation:

1. Ensure fire pit dimensions work with insert size. Measure and compare carefully.

2. Remove grate, log rack or any accessories from fire pit to make room.

3. Place insert inside fire pit, centered evenly to maximize coverage.

4. If needed, add non-combustible filler like stone or concrete block to take up any major gaps at perimeter.

5. Create hearth extension if fire pit lacks sufficient non-combustible floor area in front.

6. Keep combustibles like patio furniture away from pit per manufacturer recommendations.

7. Ensure insert has proper ventilation spacing and is not situated near any flammables.

8. Do test burn and make any adjustments needed for ideal draft and performance.

With good planning, measurement and some common precautions, most fire enthusiasts can install their own smokeless insert in an existing outdoor fire pit in just an afternoon or weekend project. Ensure the insert itself is UL listed as well.

What are the best smokeless fire pit alternatives?

For those that don’t wish to install a smokeless insert, some other low-smoke fire pit options include:

– Elevated fire bowls – Bowls on tall stands enhance airflow and cut down on trapped smoke near the fire.

– Vented fire pits – Built-in side vents channel smoke out of interior chamber.

– Tube style pits – Long horizontal shape and open ends increases air supply.

– Gas fire pits – Burn propane or natural gas for no wood smoke.

– Pellet grills – Use wood pellet fuel for precision heat and minimal smoke.

– Electric fireplaces – Mimic fire ambiance with no real combustionproducts.

– Fire pit spark screens – Mesh screen partially covers top to direct some smoke upward.

For maximum smoke reduction, a purpose-built smokeless insert is the most effective and proven solution. But other fire pit tweaks can also help cut down on annoying smoke.

Conclusion

Smokeless fire pit inserts utilize clever air flow design and containment to significantly reduce smoke output from wood burning fire pits. Quality inserts can decrease smoke by up to 90% for much more enjoyment of outdoor fires. Units with double-walled stainless steel construction provide the best performance along with easier heat and smoke management. While smokeless inserts require an initial investment and proper installation, the benefits of cleaner, odor-reduced outdoor fires are worthwhile for many homeowners. With good maintenance and the right burning techniques, a smokeless insert can convert a smoky nuisance fire pit into an inviting and comforting smoke-free fire feature the entire family can appreciate.