Thermosyphon No Pump Wood Fired Water Coil close-up copper tubing detail

Premium Stainless Steel Wood Fired Hot Tub Coil Thermosiphon DIY Fire Pit Heating Coil

Premium Stainless Steel Wood Fired Hot Tub Coil in outdoor barrel soaking tub scene

Wood fired hot tub heater coil kit - All models stainless steel eco-friendly

Thermosyphon No Pump Wood Fired Water Coil for Stock Tank Hot Tub

$338.00 Free shipping

United States dollar ($) - USD

United States dollar ($) - USD
Canadian dollar ($) - CAD
Australian dollar ($) - AUD
New Zealand dollar ($) - NZD
Euro (€) - EUR
Pound sterling (£) - GBP
Swiss franc (CHF) - CHF
Swedish krona (kr) - SEK
Norwegian krone (kr) - NOK
Danish krone (kr.) - DKK
Czech koruna (Kč) - CZK
Singapore dollar ($) - SGD
Hungarian forint (Ft) - HUF
Hong Kong dollar ($) - HKD
Polish złoty (zł) - PLN
Russian ruble (₽) - RUB
Japanese yen (¥) - JPY
Israeli new shekel (₪) - ILS
Philippine peso (₱) - PHP
Thai baht (฿) - THB
New Taiwan dollar (NT$) - TWD
Mexican peso ($) - MXN
Brazilian real (R$) - BRL

SKU: SC26070457 Category: Wood Fired Hot Tub Component Heating Coils Brand: Smartclima

Our products are liked and shared by:

Description
Reviews (0)

Thermosyphon No Pump Wood Fired Water Coil is a self-circulating copper heating coil built for stock tanks, outdoor hot tubs and off-grid heating systems. This pump-free wood-fired water coil relies on passive thermosiphon gravity circulation, eliminating electric pumps and power consumption for reliable off-grid hot water supply. Crafted with heavy-duty corrosion-resistant copper tubing, the wood boiler water coil transfers heat efficiently from wood stoves, fire pits and outdoor furnaces to large stock tanks and soak tubs. No electricity, no moving mechanical parts, low maintenance design ideal for rural homesteads, off-grid cabins, backyard hot tub setups and remote seasonal living. Compatible with standard stock tank plumbing; durable high-temperature construction delivers consistent hot water without extra pumping equipment.

Thermosyphon No Pump Wood Fired Water Coil for Stock Tank Hot Tub – Model A4

Manufacturer	Smartclima Co.,Ltd.
Brand	Smartclima
Primary Material	Seamless anti-crack stainless steel tubing
Product Type	Wood-fired off-grid hot tub water heating coil kit
Coil Dimensions	Tubing diameter 25mm, coil outer diameter 35cm, coil height 30cm (±1–3cm tolerance), 8 spiral circles
Included Components	1 x Wood-Fired Heater Coil 2 x Heat-Resistant Silicone Hoses 100cm/pc 6 x Stainless Steel Hose Clamps 2 x Tub Fittings (Stainless steel) 1 x Water Flow Stop Valve 1 x Freeze-Protection Drain Valve
Core Function	Transfer heat from wood fire to hot tub water via automatic liquid circulation
Key Protection Feature	Built-in freeze drain valve to prevent coil cracking in cold weather