Bobina de Acero inoxidable Intercambiador de Calor para el holandés de hidromasaje,Leña bañera de hidromasaje calentador de bobinas

Stainless Steel Coil Heat Exchanger for dutch tub

En venta! Stainless Steel Coil Heat Exchanger for Dutch Tub, Wood Fired Hot Tub Heater Coils. It is a core component to DIY or Commercial-Build a Wood Burning Hot Tub. It is made from 100% stainless steel grade 304.

Hot tub coil heater is powered by wood burning, and it is heating coil kit for your outdoor unit tub.They are always used to heat water in a tank, barrel, tub, or swimming pool by burning wood.These stainless steel fire coils are the key parts and accessories if you want to DIY build or commercially make a wooden fired hot tub in your backyard.

Outstanding feature: No need for electricity or gas; heat water just by burning wood, then enjoy a good outdoor bath…

Material: 100% stainless steel grade 304, food grade, salty water resistant.

Place of origin: Made in China,Manufacturer Direct-Sale; sells globally.

 Orden O Pregunta Sobre "Bobina de Acero inoxidable Intercambiador de Calor para el holandés de hidromasaje,Leña bañera de hidromasaje calentador de bobinas"

Un vídeo sobre el "SS Serpentín Intercambiador de Calor para el holandés de hidromasaje,Leña bañera de hidromasaje calentador de bobinas"

This video was recorded by one of our customers from Australia who brought coil heat exchanger for hot tub from Smartclima.

Los modelos en "SS Serpentín Intercambiador de Calor para el holandés de hidromasaje,Leña bañera de hidromasaje calentador de bobinas"

Wood hot tub coil dimension:
Tamaño de tubo:Tubo de diamater 25mm * 1.5 mm de espesor de pared
Tamaño de la bobina de la parte: Dia.35 * 30 altura (cm)
Horizontal de tubos de cola: 46cm
Extremo del tubo:Roscado
Círculos:8 círculos.
Partidario(en Opción 1B) altura: 25cm(si se requieren otros de altura,por favor háganoslo saber al realizar el pedido).
Aviso:El siguiente imágenes son sólo para referencia
Paquete:1 unidad / paquete.

Escriba Una Opción 1A&1B:
Calentador de Bobina única (Tipo Una Opción 1A);
La Bobina de calentamiento +Partidario+ Fuego titular (Tipo Una Opción 1B)

Hot tub heater coil option 1A coil only
Buying Option: Type A Option 1A


Hot tub heater coil option 1B coil kit
Buying Option: Type A Option 1B


Tipo B Opción 1A&AB:
Calentador de Bobina solo + válvula de Control (Tipo B Opción 1A) ;
Calentador De Bobina 
+ Válvula de Control de +Partidario+ Fuego titular (Tipo B Opción 1B)

This is coil heater type B option 1A
Buying Option: Type B Option 1A


wood fired tub coil heater type B option 1B
Buying Option: Type B Option 1B


La instrucción: Para el tipo B de la bobina kit viene con un latón de la válvula de control con agua conector rápido. El latón de la válvula se utiliza para controlar la temperatura del agua en la bañera:cuando se siente el agua está demasiado caliente,simplemente apague la válvula,y el agua deje de fluir immdiately para evitar que el agua que la temperatura suba. El conector rápido es usado para que nos conecte la tubería de agua a la fuente de agua fauce.Después de regar el agua a una altura adecuada( por lo general necesitan ser más que la parte superior de la tubería de puerto),acaba de apagar el pequeño de la válvula.

Escriba Una Opción 2A y 2B:
La Bobina De Calentamiento + Desmontable Bridas (
Escriba Una La opción 2A);
La Bobina de calentamiento +Desmontable Bridas + Partidario+ Fuego titular (Tipo Una Opción 2B)

wooden fired tub heater coil option 2A
Buying Option: Type A Option 2A


wooden fired hot tub heater coil option 2B
Buying Option: Type A Option 2B


Tipo B Opción 2A y 2B:
La Bobina de calentamiento + válvula de Control +
Desmontable Bridas (Tipo B La opción 2A);
La Bobina de calentamiento +válvula de Control + Desmontable Bridas + Partidario+ Fuego titular (Tipo B Opción 2B)

wood burning tub coil heater type B option 2A
Buying Option: Type B Option 2A


DIY wood burning hot tub`s parts coil heater type B option 2B
Buying Option: Type B Option 2B


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


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


The option 3 kit includes:
  • SS coil,used for heat the water in tub;
  • Stainless steel flange,to install the coil onto the tub;
  • Smoke Guard,prevent smoke blow to the person in tub;
  • Wind Guard,prevent fire heat blow to the air.This guard is helpful to keep heat and improve coil working effience;
  • Wood Basket/holder,to hold burning wood under the coil,hold fire;
  • Water flowing stopper.When the heater coil is working,maybe you will feel the water in the tub is hotter and hotter,and then 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 item.
  • Ground stand.(If no special requirment,will delivery height 250mm).

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

Type A Option X: Heater coil + Flexible extending hose + Attached flange valve,(options:  fire holder; ground stand)

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

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


fired heating coil for hot tub with connecting tube
Buying Option: Type A Option X

tub tank or barrel connector

The connector has two size 25mm and 32mm, to connect coil with different pipe diameter:25mm and 32mm.

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

DIY hot tub part coil heater with valve
Buying Option: Type B Option X

 Are you also interested in a whole kit– Foldable and Portable? 

If you want to order a foldable and portable heating tub with coil heater,please click the below image for details. With this kit, you can enjoy a hot bath anywhere,when you are travling or any other places…

Portable wood burning hot tub kit with coil heater
Portable tub with coil heater


 Details for “Wood burning hot tub coil”

Want to DIY a Backcountry Hot Tub? These heater coils are for you to DIY a firehot tub project in your back garden.

Wood Fired Thermosyphon Heater,hot tub heat exchanger,burning a fire with wood outdoor in coil,as the best important part designed especially for  dutch tub,Pool Heater ,and wood fired outdoor hot tub,burning a fire in the coil to heat cool water,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.

Made from polished stainless steel food grade 304 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.

Used for water tub for having a outdoor bath.The heater coil is usually used for DIY your own backcountry camping hot tub,dutch tub water heater,then have a bath,relax yourself!




stainless steel polished-pipe

hot tub tread with cover protector

Water flowing stopper for heater coil

Benefits of a fire hot tub heater coil:

1. The heater spiral coil is made of seamless stainless steel (304) tube and can withstand high pressure.

2. Cleanliness and health.As the material is food grade stainless steel 304,

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 for a 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 surface and a small pressure drop allow water to circulate in the coil;

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.


[1] Stainless steel has strong material strength. The tensile strength is better than other materials.

[2] Stainless steel heat exchangers have many advantages, such as strong pressure, stability material properties, high heat transfer efficiency, won’t contaminate the medium and no refrigerant leakage.

[3] Stainless steel has excellent temperature resistance and can prevent frost crack evaporator in low temperatures, operating safely from -270 °C to 400 °C.

[4] Stainless steel has good mechanical properties and good hot work ability for stamping and bending, and no heating treatment hardening.

[5]It can be attached to a fiberglass soaking hot tub, a portable waterproof cloth tub, an old-fashioned tin tub, a wood tub, or any other bath tub.

[6] principle: The basic coil was housed in a heater where firing and fire inside the coil produced heat and exchanged heat with the water recycling inside the tube. It can be used in a straight-sided bath tub.

Aplicación :
Se utiliza como bañera de hidromasaje intercambiador de calor.Si usted quiere construir un acampar fuera de pista bañera de hidromasaje,esta espiral de acero Inoxidable de la bobina es es la mejor opción.Este serpentín del intercambiador de calor se utiliza ampliamente para BRICOLAJE construir un jacuzzi al aire libre para tener un buen baño al aire libre y se utiliza como Leña Calentador de Piscina.Es la mejor parte para DIY su propia leña bañera de hidromasaje.

wood fired coil heater

F.A.Q concerning for  wood burning fired hot tub.

  • Do wood fired hot tubs need electricity?

    Wood burning hot tubs heat inside watre by using traditional wood fired stoves. There’s no electrical component in the whole kit.Very simple to operate.

  • How does a SS coil work to heat water in tub?

    As you know the principle:the hotter water goes up and the colder water goes down. From this principle,the hotter water inside coil goes up to the top and then flow into the tub,at the same time,the cold water in tub goes down and flows into the lower inlet of coil…recycling like this,the temperature of water in tub rises.

  • What is the fastest way to heat water in a wood fired hot tub?

    Do some insulation work at the bottom and around of tub,and better to have a lid on the tub,it can speed up the heating time.

How to order “Fire heated hot tub coil”?

  • The stainless steel coil heat exchanger for dutch tub is available for retail and wholesale;
  • El elemento requiere una gran embalaje dimensión,por lo tanto,requiere de mucho peso del volumen.El lugar de origen se encuentra en China,cuando usted compra uno o dos,por favor considere la posibilidad de transporte de mercancías(por aire o por mar) en el costo;
  • Aceptar el pedido en bloque con la entrega de Contenedores;
  • Pls nos indican la cantidad que usted necesita,por lo que podemos calcular los gastos de envío;Después de confirmar el precio,vamos a enviar la factura a través de Paypal para pagar.También aceptamos el método de pago de Western Union, transferencia Bancaria;
  • Póngase en contacto con nosotros al correo electrónico: [email protected]
  • A día de hoy,ya hemos vendido más de 1500pcs Bobina de Acero Inoxidable Intercambiador de Calor para el holandés de hidromasaje,y obtener el 100% de comentarios positivos! 

El Conocimiento General sobre los "Bobina de Acero Inoxidable Intercambiador de Calor para el holandés de hidromasaje,Leña bañera de hidromasaje calentador de bobinas"

principle Wood-Fired-Hot-Tub-workingThe fire hot Coil Heat Exchanger 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 in from 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 more and more hot…For DIY su propio jacuzzi al aire librepor favor consulte este artículo.

La leña bañera de Hidromasaje,utilizado como bañera de hidromasaje intercambiador de calor, era sólo para utilizar el Serpentín del Intercambiador de Calor funciona según el principio de circulación natural para agua caliente para tomar un baño.

Sin electricidad o gas, algunas personas pueden disfrutar de un baño juntos en un horno de Leña bañera de Hidromasaje en libre y relajarse en la mayoría de los.

Esta simplicidad todavía apela a muchas personas. Pero también los rituales alrededor de ella, como la recogida de la madera, la quema de la madera, la regulación de la estufa y el calor, la mezcla del agua hasta el frente. Y, a continuación, disfrutar de el aumento de vapor y los ruidos de la calefacción.......

En que el respeto a Leña bañera de Hidromasaje a un total de producto diferente en comparación con el Jacuzzi de hoy que está trabajando en la electricidad.

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

A heater / 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. All our stoves are made of 2-3 mm stainless steel.

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

Una parada así que usted puede ensuciar el agua de los desagües y de evt. aanluitmogelijkheid de que uno puede lograr en la de aguas pluviales o de alcantarillado para el agua sucia.

Bobina de Acero inoxidable Intercambiador de Calor para el holandés de hidromasaje es el de anillos alrededor de la Tobbe Tobbe que usted puede demandar. Supongamos que Tobbe se ha reducido ligeramente en el tiempo seco, usted puede apretar las correas ligeramente. En la estufa lado generalmente, usted puede apretar las correas. Este es un gran producto!

Artículos útiles o recurso en "Leña bañera de hidromasaje"

Enjoy outdoor hot bath

Want to enjoy an outdoor hot bath with a wood fire coil heater (as picture shows)? For many people, this is a romantic, luxurious and inaccessible lifestyle. However, this will become possible if you DIY a hot tub like this and it is not difficult. So in the following article, we will share more comprehensive steps for DIY a wood burning hot tub. Hope it is helpful to everyone.

En primer lugar, prepare los siguientes materiales y herramientas:
A bathtub. You can get a bathtub from various channels, you even can also use an old bathtub to retrofit it, or you can use wood pieces to build a bathtub yourself.

Some copper pipes or stainless steel tubes and water tank connectors.The diameter of copper tube should be bigger than 19mm in order to have a good heating speed.

Preparar un taladro para perforar agujeros en la bañera.Alternativamente, usted puede agregar un opcional tapón de drenaje en el lado de la bañera cerca de la parte inferior para que pueda drenar el agua según sea necesario.

Los siguientes pasos que usted puede seguir:
1. Elegir el lugar para construir la bañera.Desde el más simple perspectiva, debe decidir dónde construir la bañera. Si no está seguro, busque un área que no afectará a la casa o de su luz, de preferencia cerca del agua.

2. Preparar el terreno.Una vez que usted decide dónde construir su bañera, usted necesita para nivelar el terreno y eliminar cosas como los picos que podrían dañar la bañera. A continuación, coloque la bañera en la que la tierra plana.

3.Make a heating coil or diy heat exchanger for hot tub . You can use copper tube to bend to be coil to heat the water in the bathtub. Or you can buy a good Stainless Steel Coil Heat Exchanger for dutch tub  directly from Smartclima, it has a more reasonable design,peaceful flowing and heats up faster,it looks more beautiful.

4. Drill holes on the tub or tank.Use a drill to make holes on the wall of bathtub or water tank. The size of the hole should match the size of connection kit. The position of the hole should be determined according to the position of the inlet and outlet pipe of the heater coil.But notice to let the water outlet keeps under the water level in tub,which can speed up the heating time.

5. Añadir accesorios. Coloque el tanque de agua conexión de conexión a través del agujero y lo selló con un sellador de silicona. A continuación, conecte la bobina de calefacción y bañera conector con un resistente de alta temperatura de la tubería de agua.Los extremos de su propia serpentines de calefacción puede estar ligeramente inclinado, por lo que cortarlas antes de insertarlos en el accesorio. Poner algunos ladrillos bajo el calentador de bobina, de modo que la altura de la bobina es constante con la altura de la bañera agujero.

Hecho. A continuación, llenar la bañera con agua y quema de madera en la bobina. Tenga en cuenta que la altura del agua en el tubo debe ser más alto que la apertura de agujero en la bañera, esto puede acortar mucho el tiempo de calentamiento.

Ideas de mejora:

Se recomienda el uso de bañeras de plástico o de madera de la bañera, ya que esto ayudará a ahorrar madera.
La creación de una estufa-como recinto alrededor de la bobina va a hacer el sistema más eficiente de combustible y ayudar a sacar el humo del cañón.
Si el costo lo permite, es recomendable aumentar el número de bobinas, que aumentará la velocidad de la calefacción.
Se recomienda el uso de diámetro más grande de cobre y tubos de acero inoxidable para aumentar la velocidad de calentamiento.

111 Inquires to Bobina de Acero inoxidable Intercambiador de Calor para el holandés de hidromasaje,Leña bañera de hidromasaje calentador de bobinas

  1. It is the best professional manufacturer for coil heater.I brought it last month,and working very well,smooth flowing piecefully and nice looking. Thank you!

  2. Hallo könnten Sie mir gewerblich einen Preis katalog zukommen lassen und Versandkosten nach Deutschland. Vielen Dank schon mal vorab. Karsten Moschner

  3. Hello,

    Could you please send me a catalogue with prices of all the options and eventually freight to Colombia, South america?

    I am mainly planning to buy 2 of option 1A or 1B.

    Thanks for your prompt reply.


  4. Please can you send me a full price for coil and all the fittings please and the price to send it to the United Kingdom. Many thanks

  5. Good day
    I’m based in the uk and looking for prices and delivery for the 1A and 1B stainless steel hot tub heating coils.

    Kind Regards

  6. I’m looking to convert a 5 person hot tub to wood fire. What is the price for the largest coil shipped to Canada?

    Thank you.

  7. Good Evening

    What is the best price for 1B stainless coil (to fit to a 1000 ltr tank, need pastic fitment also to tank In and out.

    Fire stand
    Stainless steel stand
    plastic in and out connectors to tank
    Flange on coil
    possible 2 short lengths of plastic pipe

    PLUS to you sell ex display at all. Thank you. Please peruse over enquiry. LUCU.

    • Hello,

      Im intrested in heater option 3, butt then with connerctors for an platic tub for trees. I understand that you have thees kind of conrectors so i can drill holles my self. What are the costs including shipping to the netherlands(Holland).
      I like to hear from you,

  8. Hi I would Luke to find out your prices on hot tub heating coils
    Not sure which one yet can I have a price on them all?
    And lead times?

    Many thanks

    James lyons

  9. Hi! I am inquiring about to purchase option 2 or 3b. To be mailed to North Carolina, USA.
    Can you please give pricing?

  10. Bonjour,

    J’aimerais commander un échangeur serpentin en inox mon volume d’eau à chauffer est de 885L dans une cuve en acier galvanisé pouvez-vous me communiquez vos tarifs et délais SVP pour une livraison à Pornichet (44380) en FRANCE.
    Vous en remerciant par avance
    Dans l’attente de vous lire

  11. سلام آیا بعد از گرم شدن آب در کلکتور نیاز به پمپ داریم که آب گردش کند یا خیر

  12. Hello,

    I had a few questions about the coil… I have been researching now over a month.
    I seen this method of using coil. Is this a stainless steel coil? Do you sell pre-made copper coil?

    Also I was thinking of buying a Wood fire hot stove…. would I need a coil then?

  13. Interested in a coil with straight ends, no threads or flange, with supports, bottom fire screen and smoke shield sized to heat a 300 gallon stock water tank. What would the price and shipping be to Cincinnati, OH, USA, 45174.


  14. Dear

    I’m interested in your solution option x to build it into our hot tub system

    Is it possible to get more info in your prices, delivery time and shipping costs (Belgium)

    Based on your information and our calculations, the following setup would be needed:
    – coil 32mm tube, 9 circles, Coil Dia.350mm
    – supporter
    – fire holder
    – smoke and wind guard
    – hot tub clamp connector.

    Thank you to inform me.

    Ewout Van den Broeck

    • Hello,Ewout.Noticed your message and happy to cooperate with you.And email with price for the coil heat exchanger kit was already replied to your mail address.Pls check your inbox. Thank you.

  15. HI,Smartclima! I want to resell your products in US,mainly in my Amazon shop. I made particular investigation on wood burning hot tub,especially the heating coil.Finally,I`m lucky to find Smartclima,it seems a brand,and seems having very professional experience on manufacturing wood fired hot tub accessories.My plan is to order more than 10units(coil) every time,could you give me a good discount?At present,I`m running 3 shops on Amazon and 1 shop on ebay.

    • Hello,Simon,
      It`s happy to receive your message.And of course,we can give you good discount in bulk order to let you have profit when reselling.More details and price sheet will be sent to your email address,please notice to check.

  16. Hi I would like a specification and price for a coil to heat a 1000 ltr tub Your option 3 please

    i have no issue with space of smoke as i am on a coastal location by the sea i intend to use salt water so the grade of stainless steel should be suitable

    I would like a coil that will heat the tub as quick as possible

    delivery to Ireland post code T45 CC67


    Sidney Mc Elhinney

  17. Hi, Could you please quote for me:Stainless Steel Coil Heat Exchanger for Dutch tub – buying option 3. Delivered to Canberra Australia post Code 2615.It seems charming that to heat my tanks water by burning wood only.I want to make an outdoor hot tub myself. thanks

  18. Hi,
    I’d like to purchase a stainless steel coil heater delivered to Toronto, Canada. What is the cost?And is it possible to equip with stove and chimney?

  19. Hello,

    Could I please get the price of Option 3 for the heating coils? that is going to used for a wooden barrel. Thank you for your time.

    Gail Hillsgrove

  20. Hello, I am curious about the price and timing for the heater coil option 2 and option 3. We have a dutchtub Knockoff with the flanges but had the coils freeze and rupture. I live in Colorado…Thanks Pete

  21. Hey there, I’m interested in buying a heater coil for my hot tub! I have a hand-made copper one that I use, but if I can find a good source of professionally made ones I can start selling the tubs. Let me know prices and delivery times!

  22. David Kotevski
    Hi I need a purpose built larger heat exchange coil, with more turns and possible with a wider diameter and thicker gauge pipe. Has your company got the facility to make such variations to to the product. What is your maximum coil diameter size and what is the maximum coils of circle. Could you please let me know.


  23. I`m from Germany,and my coil heater arrived last month,and I used it with my own tub together to DIY built a wooden fired hot tub.Seems very nice and good looking. Thanks for Smartclima`s excellent coil,it is so good quality!

  24. Heater coil (Option 1) arrived yesterday and I’m really pleased with it. Communication from Johnhua was excellent throughout, air delivery to the UK was really fast considering it came all the way from China. No problems with customs or extra charges and tracked all the way to my door. Delivery guy thought I had ordered bagpipes.

    The reviews on this website really helped with my decision to buy so I felt I should share my experience. I’ll be installing this on an above ground swimming pool to supplement an electric heater, it’s 10.7m3 capacity so I’m not expecting anything close to hot tub temperature, but if I can get 4-5C increase over a few hours I will be delighted. Fingers crossed.

  25. I would like to inquire the price for option 1 coil and option 3 coil to send to The Netherlands in Europe.
    I am looking for a coil to heat 1000 liter Tub.
    very much obliged.

  26. Hello,
    I am interested in Your Buying Option 3 or eventually Buying Option 2.
    I want to heat a 1700 liter hot tub from 5 Celsius to 37 celsius in around 3 hours.

    Is it may be better to use 2 smaller heat exchanger parallel instead of one large.

    What will be the overall cost including shipping to Austria?

    best regards

  27. Hi,

    I have a 2.5m3 wooden hot tub, that i want to heat with a 22kw woodburner with backboiler, I would like to pump thru 22mm pipe to your coil immersed in the water, the water is 1000mm deep. what size of coil would you recommend and the price of the coil delivered to northern ireland

  28. Hello! Im interested in purchasing a coil for a stock tank diy hot tub set up. Are you still selling these?
    Do you have any suggestions for which set up to purchase? It looks like flanges and a bottom tray for the fire might be good to have.


    • Dear Irene. We have 3 options for you to choose. Option 1 coil only, option 2 coil and flange,and option 3 coil kit .When you choose option 3,please indicate us which height of support leg you need. For more details,our people will contact you by email. Thank you.

  29. Hi!

    I have pool with 2000 liter.
    What coil do you have for that one?
    And what length and diameter options do you have on the coil? Do you have 32mm? What material do you use? What is the weight?
    Please let me know of cost for coil and shipment cost and lead-time to Stockholm, Sweden?

    I also wonder how much is a ready to use “dutch”tub for 4 person and shipping to Stockholm, Sweden.
    Many thanks!

    • Hello,Lasse,
      Ok,will communicate by your private email.We are happy to help you to built hot tub system with our coil heater.

  30. Hello,

    I would like to know the price and delivery costs in sending a heater coil for options 1,2 and three to Poland.

    Kind regards,

  31. Hi,

    I’m interested in purchasing heating coil for my hot tub. What is the price range (including shipping) to Poland? What king of information do I need to supply to build a coil for me?


  32. I’m after a quote for 1 coil for heat exchanger to be made and shipped to Australia. I’m located in Victoria and would require door to door postage as part of the quote.the application is water heated from engine exhaust at maximum 2000psi for carpet cleaning machine. pump rated at 15 litres per minute.
    dimensions are slightly flexible, 4 layer coil, height between 320 & 350mm, 3/8 stainless tube with 100mm legs at same end to future fit compression fittings.
    approximate centre tube diameter of each coil. 49.5mm, 78.5mm, 107mm, 135.5mm. this should be approx. 30-35metres.
    The housing will be 1555 diam x 430mm long.

  33. Hi, could you please send me pricing on the coil heat exchanger for a Dutchtub and also with all the accessories.
    Kind Regards
    Simon Bradley

  34. Due to the current state of things over here all my fun little projects have been put on hold now.
    Sorry about messy you around like this, it actually came out pretty cheap to make the entire hot tub using your coil and good quality hard wood, which is annoying.

  35. Hello,I`m DIY building my outdoor hot tub in the back garden.Your coil seems very helpful.But I still need you to help me customize a heater coil which suit to my tub.Contact me,please

  36. I couldn’t express how much I like this coil. The tube is polished,looks very nice,and I feel the water inside can flow smoothly and “happily”. Ago,I had some troubles because of direct flames which burn my clothes when mixing up my potions. But now,with the indirect flame and wind and smoke shield, I can wear cloth leisurely,no worry other thing.

  37. About 10days ago,I got two coils from Smartclima.Arrived very well,no any broken.The coil is polished,looks very nice.I am DIY building my own wood fired hot tub in back garden.The coil heats up the water in tub very hot and very quickly. I`m pleased with this purchasing experience.Thank you very much.

  38. Please advise quote price for
    Stainless steel Coil Heat exchanger for wood fired hot tub

    Also include delivery quote to Melbourne Australia

    Many thanks

    Jenny Chapman

  39. Last week,the coil kit was delivered to my house.Have set it up and it is working well.
    There seems to be a slow leak out at the bottom,I know it was caused by my clumsy installation.But no problem,I already fix that and seal it with silicon. Overall,it is a good item.
    I have friends asking me where I got it from,and I already introduced your website, so you might get more orders. ?

  40. I ordered one of these heat exchange units delivered to Seattle, US for a custom tub I am building. The price was competitive and delivery was timely. Thank you!

    • Glad to know you enjoyed a good purchasing experience.thanks for your comment.if you can share the customed hot tub here,will be very thankful.

  41. Hello,arrived the heater coil yesterday,same as described on the web.A little pity that there is a small scraping on the tube,I think it is caused during transport,but no problem for the using.Good product and great service,I`m satisfied with the purchasing experience.Thank you.

  42. The exchanger arrived a few weeks ago.
    Just wanted to say many thanks to you – it looks very good.
    I will send a picture of it when I build the hot tub.

  43. Rather than purchasing a pre-made firehot bathing tub, I want to DIY my own bath tub with your heating coil and solid wood.I think it is simple and cheap cost.Could you help me?

  44. hello,I`m building my hot tub.The project need coil of stainless steel tubing inside fire wood to heat the flowing water.I need it to include wood basket and SS grade 304 flange fittings which are cast into the tub. I looked into the dutch tub coil and also viewed your website,I found the two are very similiar.Could you quote us the price for above to UK?Thank you very much.

  45. Want to enjoy a hot bathing in cold winter evening and so Interested in purchase the coil kit to Construct a low cost hot tub with wood fire. Please advise price.

  46. Hi,I gout yout stainless steel heat exchangers coil samples.I`m pleased with them . Could your company make similar ones to a different size, to order ?
    I have joined the two I purchased from you and using them in an indirect heating system I have built to heat a swimming pool using a wood burner. I am thinking of perhaps marketing my prototype wood burner boiler and would need a purpose built larger heat exchange coil, with more turns and possible with a wider diameter. Has your company got the facility to make such variations to to the product I have purchsed from you?

  47. I live in the Germany and I want to build a wood fired hot tub.Already have wooden tub,and I want to purchase stainless steel coil heat exchanger from your company.Can you sell the coil with two 1″ flangers?Because I already installed corresponding flanges onto my tub tank.If that is ok,I want to buy more.Thank you.

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