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Angular external hot tub heater is made from highest quality stainless steel, assuring the best water heating.

You can choose from three external heater sizes (small, medium, large), stainless steel category and external heater front (painted or stainless steel).

Delivery time: 2-4 weeks

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External hot tub heater is wood-fired, therefore no electricity is needed. As well external wood burning heaters are more safe compared to submersible hot tub heaters, because they have no risk of touching the hot metal in being the tub.


Standard external hot tub heater equipment:

  • Heater                  
  • Ash grates
  • Chimney


External hot tub heater models*:

  • Small for Ø160-180 hot tub               
  • Medium for Ø180-200 hot tub         
  • Large for Ø200-220 hot tub

*Hot tubs inner diameter is indicated


External hot tub heater specification:





Material thickness

1.5 mm

1.5 mm

1.5 mm


500 mm

500 mm

500 mm


500 mm

750 mm

1000 mm


380 mm

380 mm

380 mm


45 kg

55 kg

62 kg

Chimney height

2 m

2 m

2 m

Furnace Length

450 mm

600 mm

800 mm


20 kw

26 kw

30 kw


External hot tub heater advantages:

  • External wood burning hot tub heater saves space in the hot tub, allowing to get a smaller hot tub for the same amount of people. As well it is more easier to care and clean.


Stainless steel categories - 430, 304 or 316:

Category 430 stainless steel is most often used in production. No chlorine can be used with this category, as in long term it may damage the metal.

Category 304 stainless steel is non-magnetic. A magnet can be used to check the quality of the stainless steel. The magnet simply won't stick to the real stainless steel. As well small amounts of chlorine can be used with this kind of stainless steel.

Category 316 stainless steel is most often used in sea water based equipment. It is resistant to sea water and aggressive salinity. Out of three categories, this stainless steel has the best corrosion resistant properties. As well it is high temperature resistant.



According to your needs, and special offers, delivery time might take from 2 to 4 weeks. That's because we are building every heater special for you and it takes time.

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