Wood fired hot tub coil heat exchanger of stainless steel

Sell wood fired hot tub coil heat exchanger of stainless steel,external wood burning heater coil kit for dutch tub.DIY outdoor hot SPA tub or swimming pool by coil burning firewood pieces to heat water without electricity,converts a traditional tub into an off-grid hot tub immediately!

Made from food-grade stainless steel,anti salty-water,anti acid, anti alkali and anti-corrosion in outdoor enviroment long years.

Round bending,no wrinkle,peaceful and smooth flowing assure natural hot circulation can be executed efficeintly,speed up heating.

Place of Origin: China. Sell to to worldwide.

Enquiry on “Wood fired hot tub heater coils”

⭐⭐⭐⭐⭐ The coil kit is liked & shared by worldwide clients:

Developing history of “Wood fired hot tub coil heat exchanger of Stainless Steel”

Smartclima is the 1st one to design and produce “Wood fired hot tub coil heat exchanger of Stainless Steel / wood fired hot tub heater” in world.

Smartclima is top 1 designer,manufacturer and supplier of “Wood fired hot tub coil heat exchanger of Stainless Steel / wood fired hot tub heater”,we sell products to worldwide market.

Smartclima started to design a wood-burning device to heat an outdoor bathtub around 2004. We went through more than 8 different designs, experimenting with copper tubes, aluminum tubes, stainless steel tubes and other materials, and tested many times in cold temperature, after two years` hard-working,we reached the optimized version, got good testing result and finally settled on the design you currently have seen on the web. This product cleverly uses natural hot circulation by burning available and easy-to-obtain firewood, and uses the principle of thermosiphon to heat the water in the bathtub. Once the heater coil came to market, it has been favored by thousands of customers all over the world and received 100% good praise!

In future,Smartclima will continue developing more types of wood fired hot tub coil heat exchangers to meet demands of different customers.

Purchasing options on “Wood fired hot tub coil heat exchanger of Stainless Steel ”

We can supply following heater coil kits to meet your different demands if you want DIY or commerical-manufacture wood burning hot tubs: (also accept customized production)

Type A Option 1A:Heater Coil Element only;

Hot tub heater coil option 1A coil only
Buying Option Type A Option 1A includes stainless steel hot tub coil element only,no have other accessories. Parameters: made from 25mm pipe,coil OD 35cm,and high 29cm. With threaded ends or barbed ends to attach the hose tightly.

Type A Option 1B:Heater Coil  +Ground Supporter+ Wood Fire holder;

Hot tub heater coil option 1B coil kit
Buying Option Type A Option 1B includes heating coil,ground stand supporter and wood burning / fire holder;(height of ground stand can be 100mm, 150mm,200mm and 300mm, the default height is 100mm). Parameters: made from 25mm pipe,coil OD 35cm,and coil high 29cm. With threaded ends or barbed ends to attach the hose tightly.

Installation instruction
: Type A Option 1A is the coil heater only,non-includes any other parts.While Type A Option 1B includes coil heater,ground stand(coil support) and wood fire holder.The two options can meet most customers` requirement if he want to DIY make their own wood fired hot tub. When installs,just use a hose to connect your tub fitting and the coil`s end.No other procedures.

Important experience: when drill hole on your tub wall, assure the upper port must be lower than the water level in tub,let upper port immerser under the water about 3cm,which can let all hot water and vapour go into water.It helps to improve heating effience and reduce heating time.

Type B Option 1A:  Heater Coil + Water import with flowing control valve;

This is coil heater type B option 1A
Buying Option: Type B Option 1A. This option includes SS coil heater and brass T control valve that can control water flows in pipe.The T valve also has an inlet port to connect to irrigate water from faucet into the tub.

Type B Option 1B: Heater Coil  +Water import with flowing control valve +Ground Support+Wood Fire holder;

wood fired tub coil heater type B option 1B
Buying Option: Type B Option 1B. This option includes SS coil ,T control stop valve and floor standing support (height can be 100mm, 150mm,200mm and 300mm, the default height is 100mm).

Installation instruction
: Type B Option 1A is the coil heater with stop valve with water inlet faucet inlined,from which the tap water can flow into the coil and your tub. Type B Option 1B increase the fire burning holder and coil ground supporting. The brass T valve is used to control the water temperature in tub:when feels water too hot,just shut off the valve,and the water in coil stops flowing immdiately to prevent water temperature in tub from rising. The quick connector is to let you connect water pipe to water source faucet.After irrigate the water to a suitable height( usually need to be over than the upper pipe port about 3cm),just shut off the small valve`s handle.

Type A Option 2A: Heater Coil + Detachable Flanges;

wooden fired tub heater coil option 2A
Buying Option: Type A Option 2A,which includes one coil and two detachable flangers.

Type A Option 2B: Heater Coil  +Detachable Flanges + Supporter+ Fire holder;

wooden fired hot tub heater coil option 2B
Buying Option: Type A Option 2B, It includes heater coil, two flanges,wood firing mount holder and ground supporting bracket.

Type B Option 2A: Heater Coil + Control valve +Detachable Flanges;

wood burning tub coil heater type B option 2A
Buying Option: Type B Option 2A,this option contains one coil with water flow controlling valve and two detachable valve.

Type B Option 2B: Heater Coil  +Control valve + Detachable Flanges + Supporter+ Fire holder;

DIY wood burning hot tub`s parts coil heater type B option 2B
Buying Option: Type B Option 2B,this option contains one coil with water flow controlling valve, two detachable valve,ground stand and fire holder.

Installation instruction
: For Type B Option 2A and Type B Option 2B, by controlling brass stop valve, you can control the water temperature in your tub (when too hot,just stop off).

Type A Option 3: Coil Kit,Comes with accessories(See below description):

Stainless steel hot tub coil kit option 3
Buying Option: Type A Option 3, includes one heater coil,two flanges,ground support,fire holder and smoke and wind guard,all-in-one kit!


Stainless steel heat exchanger coil for wooden fired hot tub option 3
Buying Option: Type A Option 3

Type B Option 3: Coil Kit,Comes with accessories(See below description):

DIY wood burning fired hot tub part coil heater type B option 3
Buying Option: Type B Option 3, includes one heater coil with brass stop valve,two flanges,ground support,fire holder ,smoke and wind guard,all-in-one kit!
The option 3 kit includes:
  • Stainless steel tube coil,used for heat the water in tub;
  • Detachable stainless steel flange,to install the coil onto your own tub with fasteners;
  • Smoke Guard,prevent smoke blow to the person who are bathing or soaking in tub;
  • Wind Guard,prevent fire heat blow to the air.This guard is helpful to keep fire in the coil and thus to improve coil working effience;
  • Wood Basket/holder,to hold burning wood under the coil,hold fire;
  • Water flowing stopper(For Type B Option 3).When the heater coil is working,maybe you will feel the water in the tub is hotter and hotter,when you want to prevent the water into the coil from heating.Then,you can use this accessory-water flowing stopper,very easy to use and stop the water flow into the coil immediately.A very useful part.
  • Ground stand.(If no special requirment,will delivery default height 150mm).

Type A Option X: Heater coil + Flexible extending hose + Attached flange valve,
(more optional parts for option X:  fire holder; ground stand)

Option X comes with tank/tub/barrel connector kit as following,and use high-temperature-standing rubber hose to connect heater coil and tub. This design can connect to the most of traditional tubs,it is widely used when DIY your own wood burning hot tub. The connecting kit has ball valve,when the water in tub is over heat,you can close this valve to stop temperature rising,easy to use.

wood burning coil heater with connector
Buying Option: Type A Option X

And if you require,Option X also can be equiped with wood holder or ground support.


fired heating coil for hot tub with connecting tube
Buying Option: Type A Option X. If you also need fire holder and standing legs,just let us know.

Option X is the best popular coil kit in our selling,because all parts are ready,you can use it immediately once you get it.If you need more other parts,it`s ok and please contact us by email.

Type B Option X: Heater coil + Control valve + Flexible extending hose + Attached flange,
(more optional parts for Option X:  fire holder; ground stand)

DIY hot tub part coil heater with valve
Buying Option: Type B Option X, includes heating coil,brass control valve,rubber hose(length 50cm), and attached valbe.If you also need fire holder and standing legs,just let us know.

Twin type: two coils plus connecting kits as below:

twin coils to heat large swimming pool

Twin type is usually used for heating large bath tub or swimming pool,it can speed up heating large volume water. You just need to open two holes on tub wall as inlet and outlet port, then connect the coil kit to your tub.That`s all!

Portable wood fired hot tub kit

If you want to enjoy soak hot bath in your backyard or go to seaside,or go camping in remote wild nature,you can consider our “Portable Wood Fired Hot Tub Kit” as following:

Portable wood fired hot tub,Enjoy hot bath in nature,Anywhere,Anytime 233

Tub color can be green,blue,or black.

Tub diameter size can be 1.2m, 1.5m, or 1.8m. (The default size is Dia.1.5m).

For more details,please check our web:

Add-on kit–Barbeque/Steaming/Cooking grille ( It is optional part,if you also need it,please let us know).

The coil heater with grille should be not only for heating your tub,it should do more works.And so, Smartclima develop more functions.Check below images,the add-on kit—i.e.:barbeque food,stewing,steaming,baking,cooking,boiling and heating! Especially,when you need to put in wood pieces into coil,just only need to move the grille away (no need to take it off again and again),very  easy to operate. The kit is made from food grade stainless steel,not rust.

Important tips:  You can consider to put the water into a pot, put the put the pot on the grille when wood burning. After the water in pot boils,just pour them into the tub. By this way,the speed of water heating in your tub can raise by 30%, means you can reduce 30% time to heat your tub!

add-on kit to coil heater Stewing Steaming Boilin..Any is ok! Barbeque.If want to add wood pieces Just rotate the grille away

Wood fired hot tub coil heat exchanger of Stainless Steel with Barbeque/Steaming/Cooking grille to let you have a hotbath at outdoor,at the same time,can enjoy delicious food!

 Product details for “Wood burning hot tub coil”

Standard “wood fired hot tub coil heater” details:

SS Tube size:Tube diamater 25mm * 1.5mm wall thickness
Size of coil part: Dia.35 * 29 height (cm)
Tube end:Threaded end or Barbed end.
Circles:8 circles.
Supporter height: 10cm(if you require other height,please let us know when place order).
Notice:The below pictures are just for reference
Package:1 unit / package.

* The default diameter of all coils mentioned in this web is 25mm,which is widely used by most of clients.If you need pipe with diameter 32mm or 40mm,please note it when send enquiry message to us.We also accept your special size or special designs to customize different coils.


stainless steel polished-pipe

the end type of heater coil kit

Water flowing stopper for heater coilDutchTub-Grilling

Features and Benefits of a fire hot tub heater coil made by Smartclima

1. The heater spiral coil is made of seamless stainless steel (304) tube and can withstand high pressure.It has strong pressure, stability material properties, high heat transfer efficiency. It has excellent temperature resistance and can prevent frost crack evaporator in low temperatures, operating safely from -270 °C to 400 °C.

2. Cleanliness and health.As the material is food grade stainless steel 304,no harm to bathing people in tub.

3.Long service life.As the heater coil is made from quality stainless steel tube, it is anti-corrosion, and thus, it is the best choice for the outdoor environment.

4.It is not heavy, easy to transport, and a good choice to build a portable hot tub for camping experience.

5. For manufacturing, we can process it into any shape and size of your design. Customized dimensions are accepted.

6.Nice looking. The surface is polished and meets food grade standards.

7.A smooth inner surfac,no wrinkle and a small pressure drop allow water to flow and circulate in the coil peacefully;

8.Excellent temperature resistance, can prevent frost cracking evaporator in low temperatures, and can work safely at minus 270 °C to 400 °C.

9.With stainless steel flanges to attach to the hot tub;

10. With all the accessories for you to build a complete hot tub.

11.Give you a good outdoor bathing experience. Enjoy your spare time.

12.Easy to install and free maintenance: When you get the coil,just need to connect with your tub;And just put the wood pieces into the coil,fire it.Ok,finish,no more steps.

Application of Wood fired hot tub coil heat exchanger of Stainless Steel:
These coils are used as heat exchanger for homemade or commerical construct wood fired outdoor hot tub,putting at your backyard,backgarden or for backcountry camping.

Made from polished stainless steel with high heat exchanging effience and perfect heat transfer efficiency performance,stability material properties.Has excellent temperature resistance , can prevent Frost Crack evaporator in the low temperature ,will safely working at minus 270 Deg C to 400 Deg C.Maximum Working Pressure:4.5Mpa,can heat more than 200gallon water.

Wood Fired Thermosyphon Heater(hot tub heat exchanger),with burning fire, as the best important part designed especially for  dutch tub,Pool Heater,and wood fired outdoor hot tub,always is used as heat exchanger,utilizing thermodynamic nature circulation cycle principle to heat the water in the tub,circulate the water through the coil(water comes in at the bottom of coil,heats up,and thus absorb heat energy from hot coil tube,and then flows out at the top back into the tub),thus also named Hot tube heater coil.

wood fired coil heater

We are proud to annouce that Smartclima is the earliest designer and developer for the coil heater used on wood fired hot tub.To nowdays,we become the best professional and largest manufacturer for the products of tub coil heater and Portable Wood Fired Hot Tub in world!

How to order “Wood fired hot tub coil heat exchanger of Stainless Steel ”?

  • The external wood fired hot tub heater coils are available for retail and wholesale;
  • Accept bulk order with container delivery to save your cost;
  • Door to door service.You will get it when you are sitting in your house.
  • Pls indicate us the quantity you need,so that we can calculate the shipping charges;After you confirm the price,we`ll send the invoice via Paypal for you to pay.
  • Please contact us to email:         OR

F.A.Q concerning for “Wood fired hot tub coil heat exchanger / wood fired hot tub heater

What is Wood Burning Coil Heater For Hot Tub?

“Wood fired hot tub coil heat exchanger of stainless steel” is an outdoor tub heater kit to heat water by burning firewood pieces.It utilize natural hot circulation: hot water goes up and forces into bathtub through the fire burning spiral coil. At the same time,the coil’s bottom entrance draws in cold water from the tub,because the cold water always sinks.During this cycle,the water in the tub becomes more and more hot without electricity power or gas to drive. The heater coil is a basic element for you to DIY an off-grid wood fired hot tub or swimming pool.

Can I DIY construct my own hot tub using this wood burning coil heater?

Yes,of course. You just need to prepare for a bath tub and a driller, and our coil kit including all other accessories will do rest works for you. If you want to have a complete set of tub+coil or portable type to use anytime anyplace,just leave message to us,we can help.

How long should I wait to heat up my wood fired hot tub by using your Wood fired hot tub coil heat exchanger of Stainless Steel?

The heating time of the tub is affected by the volume of water in your tub,and also is affected the temperatures of the water and the surrounded air.With our test,using tub with 0.80CBM or 200 gallons. water,it takes about 1.5 hours to heat up from 18°C (64°F) to 40°C (104°F maximum suggested temperature), or about 2 hours if the original temperature is around 13°C (55°F).Of course,if you can do some insulation work arround your tub,heating time can be reduced.In addition,a very important factor is that the upper outlet must be lower about 5cm than the water level in tub,which can speed up heating water. If you want to reduce more heating time,you can consider our barbeque grille, put the pot with water on the grille when wood burning in coil. After the water in pot boils,just pour them into the tub. By this way,the speed of water heating in your tub can raise by 30%, means you can reduce 30% time to heat your tub!

Can I use copper pipe to make this coil heater?

Yes,but not good choice and no necessary,and so ,we don`t receommend.At the begin minutes,copper is fast to heat up, but after 5 minuts,stainless steel can reach the same heating performance and speed as copper pipe does.After our test on copper coil heater,we don`t suggest to use copper because :
1), Copper tube is easy to corrosion after long time, especially after exposed to high temperatures in long-time burning fire.
2), Copper has a lower melting point than stainless steel, which could be an issue when the wood-fired hot tub coil gets too hot after long-time firing. Also,the angle between two pipe will become very big when heating.
3), Cost: If you still insist on make coil heater by copper pipe,we strongly suggest the copper pipe`s OD should be equal to or more than 25mm,and its wall thickness should be more than 1.5mm in order to avoid deform when long-time firing.Obviously,that cost is a big problem.

What disadvantages of copper tube to make Wood Fired Hot Tube Coil? Compared to stainless steel tube.

In fact,we already answered this question in above question.While copper tubing is a popular material for plumbing and heating systems, but it may not be the best choice when it comes to making a wood-fired hot tub coil. Here are some disadvantages of using copper tubing for this project compared to stainless steel tubing: Corrosion: Copper is prone to corrosion over time, especially when exposed to high temperatures in burning fire. And also,most of copper tubes are thin thickness.These factors could lead to corrosion leaks when used as hot tub coil after some time. Heat resistance: Copper has a lower melting point than stainless steel, which could be an issue when the wood-fired hot tub coil gets too hot after long-time firing. It could also warp or deform under high heat with long time. Cost: If you still insist on make coil heater by copper pipe,we suggest the copper pipe`s outer diameter should be equal to or more than 25mm,and its wall thickness should be more than 1.5mm in order to avoid deform when firing.But cost is a big problem,copper tubing with big thickness is generally more expensive than stainless steel tubing, which could make the project more costly overall. Overall, while copper tubing may seem like a viable option for a wood-fired hot tub coil, but it may not be the most practical or durable choice. Stainless steel tubing offers better heat resistance, strength, low cost and overall durability for a project like this.

What is best feature of the coil heater made by Smartclima?

After do much reseaching work and many tests,finally to choose this special stainless steel tube to fabricate with perfect parameters and best performance of heating transference efficiency.In adition,it is food-grade,long service life,especailly can work with salt or marine water.Different from electrical heater or gas burning heater, this heating coil doesn`t require any other power,just need some solid wood blocks.

At what temperature can the coil work? it may be used in temperatures as low as 0℃?

The coil heater is made from special stainless steel,and so,no problem to use it under 0℃. But if used in very cold days which will have ice,we suggest you to drain out inner water after bathing which can help prolong its service life. But it isnt problem if you dont drain out water. When use it next time,the fire heat will melt the ice immediately.

How many persons can soak in tub with this coil?

It depends on your tub volume.If your tub is big enough,then it can work for 4 adults or 6 children.Of course,the bigger your tub,means the more water in tub,means the longer heating time to wait.

What`s advantages of your twin type coils?

Twin type coils can be made from pipe with OD 25mm or 32mm,if your tub or pool is big,we suggest to adopt twin types.Just need to open two holes on your tub coil,then connect all parts,that`s all!

What is the best way to manage the water's temperature?

To maintain the proper temperature, one way is to stop adding wood pieces to the fire after it reaches your desired level of heat.There is plenty of time to respond if the water temperature begins to become overheat. The other way is that,if you require,we will also can equip a stop valve for the heating coil kit (See above Option X). Once it reaches your desired temperature, you can switch off the valve. Then the flow of water will stop immediately, thus stops the temperature in the tub from rising.

Why my Wood Fired Hot Tub Couldn`t Flow Out Hot Water Or Slow Heating Speed?

Check your system that must meet: – inlet cold is at bottom – outlet hot should be at water top but about 2-3 cm under water level. – no part of the pipe should be above the water level,otherwise it will not flow.

General Knowledge on “Wood fired hot tub coil heat exchanger of Stainless Steel”

principle Wood-Fired-Hot-Tub-workingThe external wood fired tub heater is a thermosiphon device,it is a heat exchanger which works depending on the principle of natural hot circulation.  Natural hot circulation refers to: in a closed system,depending on density difference between hot and cold water,to form circulating liquid to drive an energy transmission. In the dutch tub coils,the cold water flows into the bottom tail pipe,and goes up in form of spiral state,during this process,absorbing fire heat to let the water inside gradually become hot,and finally flows into the tub.During this cycle,the water in the tub becomes hotter and hotter…For DIY your own outdoor hot tub,please refer to this article.

The wood fired Hot Tub,used as hot tub heat exchanger, was just to utilize the Coil Heat Exchanger works depending on the principe of natural circulation to heat water to have a bath.

Without electricity or gas burning, some persons can enjoy bathing together in free and relax yourself at most.

This simplicity still appeals to many people. But also the rituals around it, like gathering the wood, burning the wood, regulating the stove and the heat, mixing the water up front. And then enjoy the rising steam and noises from the heater…….

In that respect a Wood fired Hot Tub is a total different product compared with the Jacuzzi from today which is working on electricity.

What is a Wood fired Hot Tub? A Hot Tub generally consists of the following components:

A heater or stove (made of stainless steel) being a sort of metal container below the water in which you can burn the wood. This heater has 2 openings that are above the water, 1 for air and landing with a wooden lid with wooden handle, and 1 for smoke exhaust.

A chimney connected to the air pipe of the stove. This is a long metal pipe with a cap that serves as a spark arrestor.

A protective panel around the stove protecting you from burning on a hot stove.

Benches all around, so you can sit and relax. On request benches are removable for cleaning purposes.

Drink holders depending on the model attached to the cap of the stove, sometimes attached to the exterior. You can keep your drink or snack at a place holder.

A ladder, to be able to take place in the wooden bathtub.

A lockable wooden lid, Wood-Fired Hot Tub at the end when you can not use it. This prevents such leaves may fall, or insects get in the water.dutchtub-works

A stop so you can dirty water drains and evt. aanluitmogelijkheid one can achieve in the stormwater or sewer for dirty water.

Stainless Steel Coil Heat Exchanger for dutch tub,used as tub heater, is the rings around the Tobbe Tobbe which you can sue. Suppose that Tobbe has shrunk slightly in dry weather, you can tighten the straps slightly. On the stove side you can usually tighten the straps. This is a great product!

How to DIY building your own “Wood fired hot tub” with this Wood fired hot tub coil heat exchanger

Want to enjoy an outdoor hot bath or during campfire life with an external wood fire coil heater,no electricity,no gas burning?

There’s something truly magical about soaking in a hot tub, especially one that is heated by a wood fire. The combination of natural warmth, crackling flames, and the rustic ambiance can create a blissful experience that’s hard to beat. If you’re a fan of DIY projects and looking to add a unique touch to your backyard, building your own wood-fired hot tub could be the perfect endeavor. In this article, we’ll provide a step-by-step guide to help you create your personal oasis of relaxation.

Materials Needed:

  1. Large container (such as a stock tank or an old bathtub)
  2. Wooden boards
  3. Galvanized metal sheet
  4. Stainless steel coil heat exchanger (from Smartclima here)
  5. Firewood
  6. Insulation material (fiberglass, foam board, or rock wool)
  7. Tools (saw, drill, screwdriver, wrench, etc.)
  8. Waterproof sealant

Step 1: Design and Preparation

  • Choose a suitable location for your wood-fired hot tub, considering factors like privacy, accessibility, and proximity to water source.
  • Determine the size and shape of the tub, keeping in mind the number of people it will accommodate and available space.
  • Ensure proper drainage to prevent flooding in case of accidental spills.

Step 2: Building the Tub

  • Construct a base using wooden boards, ensuring it provides adequate support and stability.
  • Create the walls of the tub using more wooden boards, securely attaching them to the base with screws or nails.
  • Line the interior of the tub with a galvanized metal sheet to prevent leaks and protect the wood from moisture damage.

Step 3: Installing the Heat Exchanger

  • Attach the stainless steel coil heater to the side of the tub, lower tube is near the bottom and upper tube is about 30cm higher than the lower one.

Step 4: Insulation

  • Insulate the walls and base of the tub using insulation material. This helps retain heat and improve energy efficiency.
  • Ensure that all seams and gaps are properly sealed to prevent heat loss.

Step 5: Filling water and Enjoying

  • Fill the tub with water, start a fire in the firebox, and let the heat transfer through the heat exchanger.
  • Monitor the temperature and adjust the firewood as needed.
  • Once the desired temperature is reached, sit back, relax, and enjoy your DIY wood-fired hot tub experience.

Some Improvement tips to speed up water heating in tub:

It is recommended to adopt plastic bathtubs or wooden bathtubs, as they are insulation materials,which will help to save your wood.

Creating a stove-like enclosure around the coil will make the system save fuel,more efficient and help draw the smoke out of the barrel.

It is recommended to use larger diameter stainless steel pipes (not less than 25mm) to increase the heating rate.

When you drill hole on tub wall, assure the upper hole must be lower about 3cm than the water level in tub,which can help to improve heating effience and reduce heating time.

And so,building your own wood-fired hot tub with our coil heater can be a rewarding and enjoyable project that allows you to create a personalized haven of relaxation right in your backyard. With careful planning, the right materials, and attention to safety, you can achieve a unique and sustainable hot tub experience that combines the soothing warmth of natural wood fire with the joys of being immersed in warm water. So go ahead, grab your tools, and start crafting your very own wood-fired hot tub for endless hours of blissful soaking.

Client`s DIY Project Sample For Wood Fired Hot Tub With Coil Heater

Thanks for many customers send us many photos of their own hot tub project,we show some photos as following.


wood fired hot tub installation sample project with coil heater

Below is a video on “Wood fired hot tub coil heat exchanger of Stainless Steel ”. This video was recorded and shared by one of our customers from Australia.Because of updating and different options,some accessories may be some different,but the basic coil heater is same.

Welcome to order “Wood fired hot tub coil heat exchanger of Stainless Steel ” from Smartclima!

Smartclima is a reputable and innovative manufacturer factory renowned for its expertise in producing wood fired hot tub coil heat exchangers. We designed and manufactured the first “Wood Fired Hot Tub Coil Heater” in world.With a commitment to quality, sustainability, and customer satisfaction, Smartclima has established itself as a leading manufacturer in this specialized field.

The first one to unveil Wood Fired Hot Tub Coil Heat Exchangers In World

Wood fired hot tub coil heat exchangers are designed to harness the heat generated by burning wood and transfer the heat efficiently to water in a tub. These heat exchangers consist of high-quality stainless steel coils. The design allows for maximum heat transfer, ensuring optimal heating performance and energy efficiency.

The use of wood as a fuel source promotes sustainability and reduces reliance on electricity or gas, making wood fired hot tubs an eco-friendly choice. Smartclima’s wood fired hot tub coil heat exchangers take advantage of this renewable energy source, providing users with an environmentally conscious way to enjoy their outdoor hot tub experience.

Commitment to Quality and Innovation

Smartclima prioritizes quality in every aspect of its manufacturing process. The company adheres to strict quality control measures to ensure that its wood fired hot tub coil heat exchangers meet the highest standards. By using top quality materials,advanced production techniques and meticulous attention to detail result in reliable and durable products that stand the test of time.

Furthermore, Smartclima fosters a culture of innovation, continuously seeking ways to enhance its products and incorporate the latest technological advancements. In the field of outdoor hot tub heating,by staying abreast of industry trends and customer feedback, the factory strives to deliver cutting-edge solutions that exceed expectations.

Customization and Customer Satisfaction

Recognizing that each customer may have unique requirements and preferences, Smartclima offers customization options for its wood fired hot tub heater. Whether it’s adapting to specific dimensions or accommodating particular installation needs, the factory works closely with clients to tailor their products accordingly.

The customer-centric approach of Smartclima extends beyond customization. The company values open communication, prompt responses, and reliable after-sales support to ensure a positive experience for its clients. By fostering long-term relationships and delivering exceptional service, Smartclima has earned the trust and loyalty of customers worldwide in the field of providing camping products.

Embracing Sustainability and Environmental Responsibility

At Smartclima, sustainability is at the core of its manufacturing philosophy. The focus on wood fired hot tub coil heat exchangers aligns with the company’s commitment to reducing reliance on non-renewable energy sources. By enabling the efficient utilization of wood fuel, Smartclima contributes to a greener future and promotes sustainable living practices.

Order “Wood fired hot tub coil heat exchanger of Stainless Steel ” from Smartclima now!

Don’t miss out on the opportunity to elevate your wood fired hot tub experience. Invest in the Stainless Steel Wood Fired Hot Tub Coil Heat Exchanger from Smartclima today and enjoy efficient heating, exceptional durability, and a greener approach to relaxation. Order a wood fired hot tub coil heater now and embark on a journey of soothing warmth and tranquility!

Wood fired hot tub coil heat exchanger of Stainless Steel,Direct-sale by manufacturer
Wood fired hot tub coil heat exchanger of stainless steel 1

Sell wood fired hot tub coil heat exchanger of stainless steel,external wood burning heater coil kit for dutch tub.DIY outdoor hot SPA tub or swimming pool by coil burning firewood pieces to heat water without electricity,converts a traditional tub into an off-grid hot tub immediately!Direct-sale by the earliest designer and largest manufacturer for wood fired heating hot tub coils in world.

Product SKU: SC09726941

Product Brand: Smartclima

Product Currency: USD

Price Valid Until: 2030-12-18

Product In-Stock: InStock

Editor's Rating:
Product Information Quick Navigation:

Enquiry or Reviews

5 Star

38.67 %
87 review(s)

4 Star

0 %
0 review(s)

3 Star

0 %
0 review(s)

2 Star

0 %
0 review(s)

1 Star

0 %
0 review(s)

0 Star

61.33 %
138 review(s)

Reviewed by 195 customer(s)

  • Tyler

    I’m interested in pricing on your Option X for the wood fire heating coil as well as the add ons for option X


  • Kirk Kraklio

    Please send me a quote for stainless steel coil.

  • Travis

    I am sending an enquiry as to how much this kit costs? The collapsible pool included please! Shipping to CA as well. Thank you!

  • William miller

    We have a very large lap pool… Looking to try to heat it in the winter time with your product… Saw the image of two coils connected together to heat a large pool… Is it possible to make one larger coil… Wider diameter… About 4 feet diameter?

    Instead of connecting two units

  • Rob

    Hello, pricing for your coil water heaters please. Thank you

  • Kat

    Would like to know pricing for option X
    With the cool grill

  • Adam Costello

    Just looking for a price on coil only with attachment pieces to feed into a big plastic uline bin.

  • Danis Darren

    I recently had the opportunity to use a wood burning hot tub coil. The following are my comments after using it.

    First of all, the design of the coil heater is beautiful. After it is placed in my backyard, it has become a beautiful landscape, especially the moment when the bonfire is lit after sunset, it has become a good time for our whole family to enjoy.

    The process of installing the coil is simple and trouble free. The instructions provided are clear and concise, allowing me to easily connect it to my existing hot tub. Soon, I had a fully functional wooden hot tub.

    An outstanding feature of this coil is its heating efficiency. It can quickly heat the water and maintain the required temperature throughout the soaking process. The ability to control the water temperature by adjusting the valve is a good design.

    In addition, the use of wood as fuel not only provides a natural and environmentally friendly option, but also improves the overall atmosphere. Sitting in the hot tub and enjoying the crackling sound and aroma of a real wood fire is incredibly soothing.

    Overall, I am very satisfied with the wooden hot tub coil. It provides a unique and enjoyable outdoor hot tub experience that combines function, aesthetics and environmental awareness. If you want to enhance your hot tub experience, I strongly recommend that you consider this product.

  • Natalie


    Please provide pricing on Option 1B with the Grill
    and also what would it cost to have the full set up with the dutch tub and or the portable tub.

    Would you also please provide freight costs for product to Australia SYD NSW.

    Thank you

  • Denise

    Hi, we are interested in the Type A Option 1A:Heater Coil Element only. How much does it cost? We live in St. John’s Newfoundland, Canada

  • Austin

    Price inquiry on stainless steel coil heat exchanger for dutch tub (Type A Option 1B). Pricing in Canadian as well as shipping costs, if possible. Thank you!

  • John

    I would like to purchase a coil that is ready to just drill holes into tub and connect. I have 8ft round x 2 ft deep galvanized stock tank. Approximately 700 gallons size which I plan to insulate. I would like cost for larger tube diameter 40mm up(instead of double coil) to have chance to heat this large volume. Do you have a coil for this application? It should connect without extra parts, hope it can come with fittings to connect to stock tank and that’s it


Write enquiry message or review

Rate Your Satisfaction*