External heaters for hot tubs

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

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.