Products & Accessories

We encourage you to call 1-888-878-5512 for complete understanding of Chofu applications before placing an order. For ordering information, please visit our “How to Order” page.


Chofu Wood-fired Water Heater

$863.00

A precision built, high efficiency water heater designed specifically for soaking tubs. A double-walled stainless steel water-jacket surrounds the firebox, making the entire firebox a heat-transferring surface. It circulates water using the principal of “thermosiphon” – the pumping action created by rising hot water, eliminating the need for a circulating pump or electricity. Includes (2) stainless pipes, (2) neoprene tubes, and (4) clamps for connecting to a tub.  Through-wall ports must be selected for the type of tub. 

For more information and installation instructions, click here.

SKU: Wood-Fired Heater

Additional information

Weight 47 lbs
Dimensions 24 x 17 x 17 in

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Stainless Steel Stove Pipe

$17.00

24-in. long by 4-in. diameter. 8ft required for maximum efficiency of the Chofu wood-fired heater. For the past 18 years this pipe has been made to our specifications by an Amish sheet metal shop using premium grade 304 stainless steel. We have a low mark-up to encourage people to use this high quality stainless pipe that will last a lifetime. 8ft. of stove pipe is necessary to produce the optimal air-draw through the Chofu firebox for fast, efficient heating. A shorter chimney length will produce a slower heating rate. Stove pipe must be stabilized by our Stainless Steel Support Bracket if more than 8ft. of pipe or a Chimney Cap is used. When using a chimney cap, 10ft. of pipe should be used to compensate for the draft restriction created by the cap. Sheet metal screws for fastening stove pipe connections and a cobalt drill bit (required for drilling stainless steel) are provided when purchasing a Chofu heater. All stove pipe connections must be secured with three sheet metal screws to insure stability. The stove pipe must also be securely fasted to the 4-in. stove pipe adapter; however, the connection between the pipe adapter and the smoke outlet collar does not require sheet metal screws for stability, as this connection has a tight glove-like fit. When the Chofu is not being used, the stove pipe may be lifted off from the smoke outlet collar and stored.

Additional information

Dimensions 24 x 5 x 5 in

Stainless Steel Chimney Cap

$41.00

For protection against chimney sparks. Most people do without. Made of grade 304 stainless. Maybe necessary when summer fire danger is extreme, however, secondary combustion in the Chofu prevents most sparks from escaping the chimney. Note: Adding a chimney cap reduces air flow through the firebox; therefore, 10ft or more of pipe may be necessary to maintain the maximum heating rate. Stovepipe with a chimney cap must always be stabilized by a Support Bracket.

SKU: CHMNYCAP

Additional information

Weight 3.0 lbs
Dimensions 10 x 10 x 7 in

Stove Pipe Support Bracket

$12.00

For stabilizing stove pipe. Clamps around 4-inch stove pipe with three places for attachment. Necessary for stability when more than 8ft of stove pipe or a chimney cap is used. Wire can be attached from the support bracket to the ground or to a secure structure.

Additional information

Weight .60 lbs
Dimensions 6 x 6 x 2 in

Brass Thru-Wall Ports (pair)

$34.00

For thin wall tubs with wall thickness of 3/8-inch or less (Stock Tanks, etc). Top port has a deflection plate to diffuse hot water entering tub. Flexible neoprene sleeve bends to accommodate angle of pipe between Chofu heater and tub. Neoprene sleeve accepts either 1-3/4 inch O.D. stainless tubes or 1-1/2 inch PVC pipe. Note: These ports do not receive plugs for Freeze Protection. Two ports require with a Chofu heater.

Additional information

Weight 1.50 lbs
Dimensions 6 x 5 x 3 in

Thru-Wall Ports with Freeze Plugs (pair)

$54.00

These ports are required for freeze protection with a tub wall thickness of 3/4 in. thick or less (stock tanks, etc.). Include threaded plugs with O-ring seals.  Require a hole size of 2-3/8 to 2-1/2 in. diameter. Flexible neoprene sleeve bends to accommodate the angle of circulation pipes between heater and tub. Two ports are required with a Chofu Heater.

Additional information

Weight 1.60 lbs
Dimensions 6 x 8 x 4 in

Thru-Wall Ports (pair)

$49.00

For thin walled tubs 3/4 in. thick or less (stock tanks, etc). Requires a hole size of 2-3/8 to 2-1/2 in. diameter. Flexible neoprene sleeve bends to accommodate angle of pipe between Chofu heater and tub. Two ports are required with a Chofu heater.

Additional information

Weight 1.50 lbs
Dimensions 6 x 8 x 4 in

Long Shank Thru-Wall Ports (pair)

$59.00

These ports are required for a tub wall thickness greater than ¾ in. up to 1-¾ in. thick (wooden tubs). The flexible neoprene sleeve bends to accommodate the angle of the pipe between Chofu heater and tub. These ports also receive optional threaded plugs with O-ring seals for freeze protection. Require a hole size of 2-3/8 to 2-1/2 in. diameter. Two ports are required with a Chofu heater.

Additional information

Weight 1.40 lbs
Dimensions 7 x 3.5 x 3.5 in

Drain Assembly for Metal Stock Tanks

$44.00

Necessary to completely drain a metal stock tank because the drain provided is located on the side rather than the bottom. Our stock tank drain assembly is installed on the bottom near the outside edge of the tank (Preferably the same side as the heater). Includes a stainless steel drain fixture, drain pipe, and brass gate valve with a garden hose fitting. Installation requires cutting a hole in the stock tank bottom using a 2-in. metal cutting hole saw mounted on a drill motor. The stock tank must be elevated at least 4-in. off the ground to provide clearance for the drain pipe, but also to achieve the proper height relationship to a Chofu heater.

Additional information

Weight 1.90 lbs
Dimensions 11 x 4 x 3 in

Drain Assembly for Plastic Stock Tanks

$46.00

Necessary to completely drain a plastic stock tank because the drain provided is located on the side rather than the bottom. Our drain assembly is installed directly in the bottom near the outside edge of the tank (preferably on the same side as the heater). The plastic stock tank drain assembly includes a longer drain pipe (required when enclosing the tank with vertical side panels). Drain fixture requires a 2-in. hole to be cut in the bottom of the tank using a hole saw with a drill motor. Note: A plastic stock tank must be elevated at least 4-in. off the ground to provide clearance for the drain pipe. Includes a stainless steel drain fixture, drain pipe, and brass gate valve with a garden hose fitting.

Additional information

Weight 2.0 lbs
Dimensions 22 x 4 x 3 in

Digital Metal Stem Thermometer

$16.00

Gives a fast reading after stirring water. Responds in 6 seconds compared to a standard mercury bulb thermometer, which take several minutes. The slow circulation of a Chofu heater creates a stratified water temperature, necessitating a quick temperature reading after stirring the tub with a paddle. Non-submersible.

Additional information

Weight .1 lbs
Dimensions 6 x 2 x 2 in

Metal Stem Thermometer

$9.50

Gives a quick reading after stirring water (non-submersible). Responds in 12 seconds compared to a standard mercury bulb thermometer, which take several minutes. The slow circulation of a Chofu heater creates a stratified water temperature, necessitating a quick temperature reading after stirring the tub with a paddle.

Additional information

Weight .1 lbs
Dimensions 6 x 2 x 2 in

Replacement Parts:

Stainless Steel Grate

$55.00

Chofu Replacement Grate

This one piece grate replaces the old Chofu two-piece cast iron grates and lasts six times longer.

Additional information

Weight 2.75 lbs
Dimensions 18 x 8.5 x 1 in

Chofu Connection Kit

$46.00

Provided with every Chofu heater. Used to connect the Chofu heater to a soaking hot tub. Includes two stainless steel tubes, two neoprene tubes, and four wire clamps. Neoprene tubes come with a 90 degree bend that can be cut (as shown) to make a straight connection. Neoprene tubes have a 1-3/4 inch I.D. and connect to Chofu circulation pipes. Stainless tubes connect to thru-wall ports.

Additional information

Weight 1.60 lbs
Dimensions 11 x 7 x 4 in

Freeze Protection Port Plug with O-Ring Seal

$2.50

Used to plug PVC thru-wall ports during freezing temperature. Allows Chofu heater to be drained to prevent water from freezing in the water jacket, while leaving water in tub. The procedure is reversed when the Chofu is fired up again.

Additional information

Weight 1.0 lbs
Dimensions 2 x 2 x 1.5 in

Chofu Drain Plug

$4.50

Replacement drain plug. This little guy gets easily lost in the grass. Luckily we’ve got replacements. Rubber gasket makes a water tight seal. Finger tightens.

Additional information

Weight .10 lbs
Dimensions 2 x 2 x 1 in

Stainless Steel Connecting Tube

$12.00

For connecting a Chofu heater to a soaking tub. 10 in. long x 1-3/4 in. outside diameter. Provided with Chofu heater. Can be purchased separately.

Neoprene Connecting Tube

$11.00

For connecting a Chofu heater to a tub. Connects directly to the Chofu Heater circulation pipes, fastened with wire clamps. Comes with a 90 degree bend but can be cut to form a straight connection between heater and tub, 1-3/4 in. inside diameter. (two tubes provided with Chofu heater)

Additional information

Weight .8 lbs
Dimensions 9 x 5 x 2 in

Neoprene Flex Connector

$9.00

Used to connect PVC thru-wall ports to stainless steel connecting pipes or 1-1/2 in. ABS pipe. This flexible tube bends to accommodate the angle of the connecting tubes between the Chofu heater and a soaking tub. Can also be used for non-standard hook-ups. 2-3/4 in. long x 1-3/4 in. inside diameter. Secured to pipe with wire clamps.

Additional information

Weight .5 lbs
Dimensions 3 x 3 x 3 in

Wire Clamps (4)

$6.00

Used to fasten the connections between the Chofu heater and a soaking tub, superior to water hose clamps. Tightened with a screw driver. Package of 4.

Additional information

Weight .30 lbs
Dimensions 4 x 4 x 1 in

Smoke Outlet Collar

$32.00

This enameled steel collar bolts to the smoke outlet flange of the Chofu heater. Designed with air inducing slits that pull air into the chimney pipe to create secondary combustion for cleaner emissions and reduced sparks. Must be used with a 4-inch stove pipe adapter.

Additional information

Weight .90 lbs
Dimensions 6 x 6 x 4 in

4″ Stove Pipe Adapter

$42.00

Connects 4-inch stove pipe to the enameled smoke outlet collar on a Chofu Heater. Made of 304 grade stainless steel. Fits snug over the smoke outlet collar of the Chofu heater. Does not need to be permanently fastened to the smoke outlet collar due to a tight fit. Allows entire stove pipe to be lifted off of the heater and stored when not in use.

Additional information

Weight .40 lbs
Dimensions 4.5 x 4.5 x 3 in

Chofu Replacement Front

$155.00

Heavy steel front that fits any Chofu Wood-Fired heater. Includes cast iron door, ash drawer, and baffle clean out plate. Inside of door has a reflective stainless steel plate to deflect heat back into firebox.  Backed with high temperature refractory insulation to keep door from getting hot. Attaches to Chofu stove body with four screws. 

Additional information

Weight 16.30 lbs
Dimensions 17 x 17 x 6 in