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

| Manufacturer | Smartclima Co.,Ltd. |
| Brand | Smartclima |
| Primary Material | Food-grade stainless steel coil; heat-resistant silicone hose; stainless steel pipe fittings & clamps |
| Coil Dimensions | Tubing diameter 25mm, coil outer diameter 35cm, coil height 30cm (±1–3cm tolerance), 8 spiral circles |
| Accessory Sizes | Fire-resistant hoses: 100cm; tub wall fittings fit 1mm–60mm thick tub walls (requires to drill 2×φ25mm holes) |
| Power Source | Wood fuel only – zero electricity/gas required |
| Assembly Type | Tool-free quick connect, detachable portable hose kit |
| Package Contents | 1 heating coil, 2 fire-resistant silicone hoses, 4 stainless steel handle hose clamps, 2 tub wall fittings |
| Working Principle | Thermosyphon natural water circulation (hot water rises back to tub, cold water recycles into coil for reheating) |
| Core Purpose | Convert any existing tub, barrel, stock tank into an off-grid wood-fired hot tub |
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