Outdoor wood furnace diy

The Outdoor Boiler Domestic Hot Water Kit (PEX) is a pre-assembled kit of all the components needed to connect an outdoor wood boiler to a domestic hot water system to provide endless hot water to the home. This kit is the PEX version, and it contains all the fittings needed, along with the water-to-water plate heat exchanger.

Burn half the wood of an outdoor boiler, outdoor wood furnace, or water stove. Perfect for any house, shop, cabin, pool, hot tubs, car wash, swimming pool, and greenhouses. Perfect backup for geothermal. Call today to save on your heating bills with the Lil' Powerhouse. 218-745-5000 Call Today and find out why weStep 2: Systems Integration. My home heating system is integrated with the outdoor furnace. I had to make several enhancements to my existing system so that it can be gracefully integrated with the outdoor furnace. The enhancements were designed in a user-friendly, plug-and-play manner.Outdoor wood boiler piping is EXPENSIVE but not if you do it yourself. In this video, we'll show you how we managed this homestead upgrade to insulate our ou...Central Boiler shows you the installation process for Central Boiler Maxim outdoor wood pellet and corn furnace.For more information, please see your Owner's...Mobile wood rack system for a wood burning boiler. 2. Used Pallets. This is several ideas lumped together under one heading. Used shipping skids/pallets can come in handy. Here are just a few uses. These nifty crates are low cost and fit right on your pallet forks for easy transport from the woods. If you're feeling a bit more creative, pallets ...WoodMaster Outdoor Furnaces. Outdoor wood furnaces are what WoodMaster does, and we do them best. Since 1989, WoodMaster has built industry-leading wood heaters, continually finding innovative uses of renewable energy and alternative fuel sources. We’re industry experts and have the best products to prove it.What Is DIY Outdoor Wood Furnace and what is its operation? An outdoor wood furnace operates by burning wood, typically logs or split wood, to generate heat for heating …

This central heat wood stove will heat an entire house and uses new or salvaged components for the firebox and standard galvanized framing for the outdoor housing. This design incorporates the best features of popular commercial units. Thermostat controlled with an automatic damper control and uses an automatic blower ducted from the housing.As expensive as an outdoor wood stove after install. Pellet stoves can't heat anything else. (Domestic Hot Water & etc.) You can heat multiple buildings with an outdoor wood furnace. You can heat a swimming pool or spa with an outdoor wood furnace. So on and so on. Indoor Wood Furnaces VS Outdoor Wood Furnaces: You need to bring the wood in ...Wood-burning hydronic heaters – also called outdoor wood-fired boilers or furnaces – are residential or small commercial wood-fired water heaters that are located outdoors away from the space being heated. Typically, a water jacket surrounds the furnace’s firebox heat exchanger and heated water is circulated to the home or other structure ...It’s a way of creating a heating effect without actually heating the air. A wood furnace has forced air because it uses the heat of the air above it to warm the air above the fire. The heated air is then used to heat the air above the fire. The problem with this system is that it can be quite loud and can cause damage to your home if the ...AKA Hyprotherm 100. We have the... BEST OUTDOOR WOOD BOILER. This has a 16.5 cubic foot firebox capacity, with the ability to heat 4,125 sq. ft., based on wood capacity and 2,800 sq. ft. based on water capacity/BTU storage. The firebox size is 28"L by 30"W by 34"H and can handle 2 foot long pieces of wood with 4 inches of air space around it.It is basically a 55 gallon drum wood stove inside a much larger steel drum. The airspace has two ducts coming off it, one is a return air duct ...Melissa and I install a Central Boiler 560 to heat the house and barn. Here's every step in our process from the trenches to the radiators. Our review of the...Step 7: Heater Fan Setup. This is fairly simple, cut a piece of scrap plywood that will fit your opening, in my case it was for the window of my shed that doubles as a shop in the winter. cut 2 4" holes in it for the duct work and fan. install flanges and a fan on one side that blows out toward the heater.

Construct an enclosure around the wood stove using sheet metal. Leave openings for the blower fan and air intake. Ensure the enclosure is airtight to prevent heat loss. 6. Install the Blower Fan: Mount the blower fan at the bottom of the enclosure. Connect the fan to a power source and ensure it is properly secured. 7.Outdoor wood furnaces can be hooked up to almost any existing heating system and that definitely includes a forced air furnace. To install an outdoor wood furnace to heat your house using your existing forced air duct work system is really quite simple and can be accomplished in a single afternoon or weekend.Just follow these …Jan 28, 2020 · Electric Water Tank Vertical Wood Stove. This is another hot water tank upcycle project for beginning welders. It’s created from an old water tank, round tubing, a reinforcement steel rod, steel RHS, and steel angle. You’ll need an angle grinder, jigsaw, and Mig welder to complete it. For the rest of the building materials, you can use leftover wood from your other DIY projects or some inexpensive pine wood. Step 3: Gather the Supplies. To build an outdoor sauna, here are the things you need: About 100 pcs of 1500X80X50mm wooden beams; Concrete slabs; Gravel; Decking boards and wooden struts; Bitumen roofing felt

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1: DIY Rocket Stove Made From Recycled Can. Three recycled tin cans can be used to create a DIY rocket stove like this one by thebugoutbagguide that can cook food and provide heat. The cans, plus tin snips, gloves, marker, insulation and an hour of time will create this simple and functional homemade wood burning stove.. Here are short steps to build this rocket stove.Wood stove radiant heat off your furnace is the best type of heat and keeps your floors toasty warm! Radiant floor heat is about 20% more efficient and you can keep the water temperature much lower; saving you even more wood or coal! The water that runs through your floor for radiant floor heat should NEVER be never any warmer than 140° F ...K. 0. 228397. Here are 24 DIY Wood Stoves that anyone can build. Some of the projects have a higher difficulty rating than the others; but they can all be accomplished with a little change to the design, bartering, or by paying someone for help. DIY doesn't always mean one-hundred percent do it yourself.Hey, all my friends out there. This is River Jumper, so glad you're watching my video. This Video is really special to me. In April 2012 my Dad (Steve) and ...

It's that time of year again! Every year about mid-October we fire up the wood furnace and it stays lit until April or so, depending on the weather. This will be our 5th winter with this stove, so we have plenty of experience with an outdoor wood furnace in case anyone is interested. I know what the advertising says and I know what the reality is.This used Taylor T750 outdoor wood furnace boiler is capable of heating up to 4000 square feet. We estimate it was manufactured between... Pineview Woodstoves LLC. Oct 15, 2023 (SOLD) Used HeatMaster SS MF10,000e Outdoor Wood Furnace.17 Nov 2022 ... Build a small insulated shed around it. itll retain even more heat and burn less wood. 2022-11-19Reply. Liked by creator. Step 2: Systems Integration. My home heating system is integrated with the outdoor furnace. I had to make several enhancements to my existing system so that it can be gracefully integrated with the outdoor furnace. The enhancements were designed in a user-friendly, plug-and-play manner. Outdoor wood furnaces are hugely popular with homesteaders and off-gridders because they enable you to live fully off the grid (not connected to gas or electric) while lasting a long time and being fairly low-maintenance. As a homesteader living off-grid, I can personally vouch for how wonderful the option of an outdoor heat source is.Outdoor Wood Boilers and wood furnaces for rural home heating designed and manufactured for real world conditions. Easy to Use, Built to Last. HeatMasterss. ... Download the Ultimate Guide to Buying an Outdoor Furnace in 2024 Download the Buyer's Guide Here. Don't spend another winter paying high fuel prices. Talk to our team today ...Insulated 4-Line Pex. $6.75/ft. Ted of Abbott Boiler Parts, 828-687-4074, does not charge sales tax and the lowest guaranteed prices in the country! He was always calling me to change his website and lower the prices.Wood is a renewable resource which when burned, results in no net carbon dioxide increase. The CleanFire 700 is EPA Step 2 Certified. Overall Efficiency (LHV) - 89.8%*. Overall Efficiency (HHV) - 83.4%*. Manufacturers Rated Heat Output Capacity** - 245,000 Btu/hr. Heat Output (12 hr) - 146,686 Btu/hr.The basic components of a DIY outdoor wood burning forced air furnace include a firebox, a heat exchanger, a blower, and a duct system. The heat exchanger is where the heat from the fire is transferred to the air that is circulated throughout your home or shop. The blower is used to circulate the heated air.11 Oct 2011 ... Built all from free Junk..To build the unit I used a 30 pound propane bottle as the boiler tank I drilled a hole in the side and welded on ...The entire process of building an outdoor wood burning furnace. This furnace is now heating a 5,000 sq. ft. house and it's domestic hot water. This is the wa...

Learn how to construct the firebox and chimney for your outdoor fireplace made with concrete blocks. Stack the blocks in a square or rectangular shape, ensuring each block is level. Line the outside perimeter of the fireplace with bricks, then work inward with cement blocks. Now that you have prepared the foundation and laid the concrete blocks ...

Firing up our Homemade outdoor wood burner and showing how the whole radiant floor heating system works. Subscribe and check out all our other videos. ...The WoodMaster 4400 outdoor wood furnace is double-plumbed to heat office space, shops and other applications. It will also heat water. Its larger firebox, larger fuel door and higher Btu output delivers ease-of-use and maximum efficiency. A free 25-year limited warranty is available if furnace is registered at the time of purchase.Jun 18, 2023 · 1) Plastic Bottle Wood Stove. The first one idea I am going to share with you, is to use a plastic bottle to make a homemade wood stove. This DIY wood stove is not created from plastic but recycled plastic bottles are used to create a concrete mold. The result is an attractive and functional homemade wood-burning stove that can be used indoors ... Delta T = The water temperature drop desired. Typically between 20 and 30 F. for an outdoor furnace. 500 = This is a constant number for water. if you are using a glycol mixture use 470 for a 50/50 mix. Be sure to properly size the piping and pumps to deliver the required minimum flow for the furnace.Get your outdoor wood boiler solenoid here! We carry outdoor wood furnace replacement partsparts and supplies at OutdoorBoiler.com. This solenoid meets specifications for all outdoor boiler models with the need for these dampering characteristics. Specifications - Solenoid, Laminated 120V AC: This part meets specifications for ALL Outdoor ...6 Apr 2022 ... Heating a kiln with outdoor wood boiler ... At least here there is no more expensive way to make heat than with the current kiln's electric heater ...The Pro-Heating team is your insulated pipe installing pros. ThermoPEX is flexible pre-insulated piping that is ideal for use with outdoor wood furnaces. ThermoPEX consists of two 1-inch* oxygen barrier Central PEX lines or two 1-1/4 inch** oxygen barrier PEX lines (supply and return) that are insulated with high-density urethane insulation and ...Outdoor Wood Furnaces have been keeping households warm and toasty for decades. However, as the cost of electricity and natural gas continues to rise, installing outdoor wood-burning furnaces is without a doubt the best option to heat your home. Wood is one of the most cost-effective heating options. Unlike oil, gas, and ultimately electricity, wood is a natural, renewable resource that can be ...

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Convenient. An outdoor wood furnace is thermostatically controlled to provide a comfortable and steady indoor temperature. Thermostatic controls along with large firebox size, allows for long burn cycles. Most owners need only fill their furnaces every 12 to 24 hours, dependent upon conditions.The Pristine Gasification Series outdoor wood furnace models are our most economical & energy efficient units, burning up to 60% less wood than other outdoor wood furnaces on the market. The Multi Pass Series of outdoor furnace models are built with a triple pass heat exchanger for higher efficiency than other traditional units, shaker grates ...The Pro-Heating team is your insulated pipe installing pros. ThermoPEX is flexible pre-insulated piping that is ideal for use with outdoor wood furnaces. ThermoPEX consists of two 1-inch* oxygen barrier Central PEX lines or two 1-1/4 inch** oxygen barrier PEX lines (supply and return) that are insulated with high-density urethane insulation and ...Description. This Drolet wood furnace offers 310,000 BTU performance to heat up a 1,000 to 2,500 square foot space with an optimized 84.9 percent efficiency, making it an exceptional choice for your home or cottage. The fire box holds logs up to 21 inches (53.34 cm) in length, offering a burn time of up to 10 hours.Place the furnace on the concrete pad. Measure the distance from the house to the furnace. Take a PEX pipe (i.e. hot water pipe) of that length and put it in the trench. Place the same length 12/3 110V wire in the same length 4x6 PVC pipe. Put the PVC pipe into the trench too. Mount a heat exchanger in the outlet plenum (ventilator) of the furnace.CleanFire Outdoor Wood Furnaces. High efficiency. Clean burning. Easy to operate. Easy to maintain. Built to last a lifetime. The CleanFire 300, 500 and 700 outdoor wood furnace is EPA Step 2 Certified. View CleanFire Furnaces.Midwest Outdoor Furnace - Steinacher Sales 21690 Richey Hollow Rd. Jerseyville, IL 62052. The Hyprotherm, Top Loading, Residential (coal or wood)Forced Air series is a new concept based on our Chest Loading series. All of these top loading furnaces come with easy opening, gas spring assisted fuel doors. They have 3/8" thick fireboxes which ...And I highly recommend that you do install a plate exchanger between these two water systems. Outdoor Indoor Boiler Connection. So, from the outside boiler, you're gonna come into the plate exchanger, and then out of the plate exchanger, and return back to the wood stove. Basically, it's just that simple. Boiler Split. ….

14 Mar 2021 ... Our homemade wood fired boiler is back in action! We do our first test run of the season. Support The Channel here ...The 1660EFE exterior furnace is designed to use in conjunction with your existing HVAC ductwork and work seamlessly with your existing furnace while leaving the mess to the great outdoors. With up to 180,000 BTU's it is designed to heat a home up to 3000 sq. Feet. This unit is made with a firebrick and cast iron lined firebox surrounded by ...DIY Outside wood burning forced air furnace FREE HEAT in the winter It looks like one of my money saving schemes has actually worked according to plan! It do...Building Outdoor wood stove With Stone // How To Build A Traditional wood stove ...more. Building Outdoor wood stove With Stone // How To Build A Traditional …Outdoor Wood Burning Boilers ECONO 85 from $5397 Small Mini Boiler PRO FLRH-85 2300 sq. ft. FLRH-100 2800 sq. ft. FLRH-185 5182 sq. ft. FLRH-265 7400 sq. ft. FLRH-300 8400 sq. ft. FLRH-350 10,250 sq. ft. FLRH-400 11,288 sq. ft. FLRH-6048 Largest front loader TOP Loading Furnace 10-105.000 USED BOILERS Refurbished Front Loading Furnace/Boiler PricesTransitioning To A Gasification Outdoor Wood Boiler. After using a "traditional" outdoor boiler for just over five years. A HeatMaster customer going by his online name "CountryBoyJohn" upgraded to a state-of-the-art HeatMaster G200 outdoor wood furnace. In a video he posted on YouTube, he goes into detail about how much …Jul 31, 2022 - Explore Kristi Faulkner's board "Outdoor wood furnace", followed by 704 people on Pinterest. See more ideas about outdoor wood furnace, wood furnace, outdoor wood.Buy the Best outdoor wood burning boiler before steel prices go up AGAIN!> Outdoor Wood Burning Boilers ECONO 85 from $5397 Small Mini Boiler PRO FLRH-85 2300 sq. ft. FLRH-100 2800 sq. ft. FLRH-185 5182 sq. ft. FLRH-265 7400 sq. ft. FLRH-300 8400 sq. ft. FLRH-350 10,250 sq. ft. FLRH-400 11,288 sq. ft. FLRH-6048 Largest front loader TOP Loading ...For more outdoor wood boiler parts, please call our office during Monday thru Friday from 9 am to 8 pm at 231-861-8200 or visit OutdoorBoiler.com. Best Selling. Liquid Armor Outdoor Boiler Water Treatment . $84.95 Outdoor Boiler Door Seal Fire Rope 10 ft. - HEGX Series . $28.90 ...G4000 - This little outdoor wood furnace is a great way to heat a small home or shop. Rated to produce up to 68,000 BTUs per hour, on a 8 hour burn period, it should be able to heat a house that is up to 4000 square feet in size. It is a part of the HeatMaster G-Series which is one of the best selling outdoor boilers on the market. Outdoor wood furnace diy, inground outdoor wood furnace. rmanbike. Jan 24, 2014. Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment. We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues., outdoor wood furnace. Jump to Latest Follow ... DIY Home Improvement Forum. 3.1M posts 318.7K members Since 2003 A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more!, Each outdoor furnace has been designed, and thoroughly tested, through years of research & development, to consume 30%-50% less fuel than conventional outdoor furnaces. Almost any existing heating system on the market can be converted to heat with Crown Royal Stoves, Outdoor Wood Furnaces. Heating applications include, but are not limited to ..., Oct 9, 2014 · DIY Outdoor Wood Boiler. It doesn't cost much to build the boiler, the real expense is hooking it up to hydronics. There are several improvements that I'll be making to the stove and documenting on future videos as well. One of them is using the heat from the body of the stove (most of it under the boiling point of water) to preheat combustion ... , 23 Dec 2021 ... Build a 2 in 1 outdoor wood stove with cement and old Styrofoam - Simple ideas for wood stoves., Maxim Outdoor Wood Pellet Furnace Series. The Maxim series from Central Boiler is an outdoor furnace that burns wood pellets instead of wood logs. Central Boiler makes one unit in the Maxim series, named the Maxim M255 PE. The M255 PE is EPA Step-2 certified and has a heating efficiency of 96.2% LHV., Jan 28, 2020 · Electric Water Tank Vertical Wood Stove. This is another hot water tank upcycle project for beginning welders. It’s created from an old water tank, round tubing, a reinforcement steel rod, steel RHS, and steel angle. You’ll need an angle grinder, jigsaw, and Mig welder to complete it. , Oct 8, 2020 · There are a variety of affordable and economical DIY landscaping ideas at your disposal, so long as you’re ready to get your hands a little unclean. From the front lawn to the back, bbq pits to diner lights, here are 59 ways you can economically improve your outdoor space. 25. DIY Barrel Stove Outdoor Furnace Plumbing. , STEP 2: CONNECTING THE CHIMNEY TO THE BARREL. To connect the outdoor stove to the garage, removable hatches are made on one side of the stove. These hatches are designed to connect the two four-inch aluminum flex chimney pipes from the outside barrel to the garage. The hatches are essential for enabling the transfer of hot air from the stove to ..., The result is a wood-burning furnace which: [1] Keeps my family warm while saving $1,200 a year. Continue Reading. Published on Nov 1, 1975. Need Help? Call 1-800-234-3368. David Bleed shares how ..., Creating your own outdoor wood furnace forced-air system can be a rewarding project, but it involves several key steps to ensure a safe and efficient setup. Research and design: Study existing designs and gather ideas for your system. Plan the location, layout, dimensions, and features of your furnace. Gather materials: Source high-quality ..., AKA Hyprotherm 100. We have the... BEST OUTDOOR WOOD BOILER. This has a 16.5 cubic foot firebox capacity, with the ability to heat 4,125 sq. ft., based on wood capacity and 2,800 sq. ft. based on water capacity/BTU storage. The firebox size is 28"L by 30"W by 34"H and can handle 2 foot long pieces of wood with 4 inches of air space around it., Build your own outdoor wood furnace using the Spirit outdoor furnace plans Outdoor Wood Furnace Guy, Don Watters (former CEO of the Spirit Boiler Corporation) questions & advice about buying, installing and servicing your outdoor wood burning furnace PLUS, get the Spirit outdoor wood burning furnace plans!, I have just installed a central boiler outdoor wood furnace and need to know how to wire the second t-stat in the house to make just the furnace blower run. I have the Bryant Evolution series t-stat that I will be wiring to. My house has a bryant evolution heat pump. The second t-stat that I will be using to control the blower is a digital honeywell., The FC1900 warms up to 3,000 sq. ft. certainly with its clean burn technology. Highlighting a 4.6 cu. ft. firebox that accepts 26" logs, the FC1900 appropriates 240,000 BTUs of warmth all through your home. Using a highly designed airflow and well-insulated panels decrease the installation clearances of your FC1900 to a minimum of 12-inches ..., Table of Contents. Understanding the Basics of an Outdoor Wood Boiler. An efficient and renewable heating system, the outdoor wood furnace is both a practical …, Features, performance and cost data are included. Like competitor Heatmor, Central Boiler is a Minnesota company. It began in 1984, and today is recognized as one of the best outdoor wood furnace brands. Boilers are manufactured in Central Boiler’s 300,000 square foot modern production facility. EPA Certified Residential Boilers., STEP 2 : CUTTING HOLES FOR FLUE PIPE. To create the base and chimney for your outdoor wood-burning stove heater, you will need to use a hole saw cutter to make two 100mm four-inch holes. The first hole is for the flue pipe to sit in, and the second hole is for ash removal. Removing the bottom stand also makes cleaning even easier. , The most efficient furnaces deliver the best value. At 92% overall efficiency (LHV), the CleanFire 900 provides the highest efficiency of EPA Certified stick-wood burning appliances compared to outdoor appliances with a maximum output greater than 300,000 Btu/hr.*. It also delivers the highest Btu rating of cord wood appliances, with a …, DIY Outside wood burning forced air furnace FREE HEAT in the winter It looks like one of my money saving schemes has actually worked according to plan! It do..., Apr 21, 2022 · Outdoor wood boiler costs start at about $6,000 for a small unit with installation and rise to more than $12,000 for a large system that also supplies usable hot water for your home, garage or pole building, an outdoor spa or pool. In short, outdoor wood boiler cost is $6,000 to $12,000 or more based on the size and features of the model you ... , We understand. We don’t just care about Outdoor Furnaces – we care about You! Which is why we have helped more than 600 people like you find the perfect wood heating solution. Here’s how we do it, 3 easy steps: 1. Stop in and talk to our wood stove professionals. 2. Select the perfect wood stove for you. 3., The most efficient furnaces deliver the best value. At 92% overall efficiency (LHV), the CleanFire 900 provides the highest efficiency of EPA Certified stick-wood burning appliances compared to outdoor appliances with a maximum output greater than 300,000 Btu/hr.*. It also delivers the highest Btu rating of cord wood appliances, with a rating ..., Are your wood floors looking dull and worn out? Refinishing them can give your space a fresh and updated look. Traditionally, refinishing wood floors involves sanding down the old ..., Free yourself from the stress of high heating bills by heating your home, buildings and more with a WoodMaster outdoor wood furnace. The CleanFire 500 is EPA Step 2 Certified. Overall Efficiency (LHV) - 90.2%*. Overall Efficiency (HHV) - 83.8%*. Manufacturers Rated Heat Output Capacity** - 200,000 Btu/hr. Heat Output (12 hr) - 92,417 ..., About US. Northeast Outdoor Wood Furnaces was formed in 2019 and has proudly represented Crown Royal stoves since NEOWF's inception. Owner Neal Beauregard of NEOWF feels that Crown Royal Stoves are the best Outdoor Heating Boilers on the market due to their simple user-friendly design and being produced in the USA. Neal and his family have been ..., It is generally accepted that a boiler using wood gasification technology often burns as much as 50% less wood than less efficient traditional outdoor wood boilers. Generally, outdoor wood boilers range between 90% efficient at best to around 40% efficient. This means that of the energy available in the wood placed in the furnace, between 40% ..., Best Overall: Sunjoy Outdoor Fireplace with Wood Storage. Best Budget: NSDirect Portable Outdoor Fireplace. Best Permanent: FlameCraft Traditional Outdoor Gas Fireplace. Best Wood-Burning: Sunjoy Outdoor Steel Fireplace. Best with Pizza Oven: Blue Rooster Casita Grill Chiminea with Pizza Oven. 1 / 5., October 11, 2023 Posted by SEBASTIAN ZOTA. In this blog post, you'll learn how to install and mount an outdoor wood furnace. Find out about the things you need to take into …, Single-Pot DIY Rocket Stove. For this plan, you will need just a few more materials from the Aprovecho Research Center, but it's still pretty simple. With materials that can either be found around the house or that are pretty accessible, this plan makes sure you're ready to make a stove wherever and whenever. Find the plans on Youtube., Find out what DIY kits you can use to build your own outdoor wood boiler! · Boiler Kit includes Internal Coil, Domestic Hot Water Kit & more! Free Shipping On All Orders Over $199.99 (Continental US Only) , 1) Plastic Bottle Wood Stove. The first one idea I am going to share with you, is to use a plastic bottle to make a homemade wood stove. This DIY wood stove is not created from plastic but recycled plastic bottles are used to create a concrete mold. The result is an attractive and functional homemade wood-burning stove that can be used indoors ..., Step 1: The Fire Box. we start with the construction of the fire box. I aquired from a dumpster a large water heater that I am using for my firebox. about 20" to 24" diameter is good. I've found the round firebox works great because the flames play all around the top for good heat transfer.