Off Grid Portable Wood Fire Hot Tub Coil | Seamless Stainless Steel Fire Pit Heating Coil

$318.00 Free shipping

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This seamless stainless steel wood fire heating coil is a portable off-grid hot tub heating accessory running entirely on firewood with no electricity needed. Featuring leak-free integrated steel construction and rust resistance, it easily fits DIY outdoor hot tubs, fire pits and cold plunge pools. Lightweight and movable for cabins, camping and off-grid self-sufficient living, it offers a low-cost zero-power outdoor water heating solution.

Off Grid Portable Wood Fire Hot Tub Coil – Model A2

Off Grid Portable Wood Fire Hot Tub Coil Seamless Stainless Steel Fire Pit Heating Coil close-up
ManufacturerSmartclima Co.,Ltd.
BrandSmartclima
Primary MaterialFood-grade stainless steel coil; heat-resistant silicone hose; stainless steel pipe fittings & clamps
Coil DimensionsTubing diameter 25mm, coil outer diameter 35cm, coil height 30cm (±1–3cm tolerance), 8 spiral circles
Accessory SizesFire-resistant hoses: 100cm; tub wall fittings fit 1mm–60mm thick tub walls (requires to drill 2×φ25mm holes)
Power SourceWood fuel only – zero electricity/gas required
Assembly TypeTool-free quick connect, detachable portable hose kit
Package Contents1 heating coil, 2 fire-resistant silicone hoses, 4 stainless steel handle hose clamps, 2 tub wall fittings
Working PrincipleThermosyphon natural water circulation (hot water rises back to tub, cold water recycles into coil for reheating)
Core PurposeConvert any existing tub, barrel, stock tank into an off-grid wood-fired hot tub

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