Singema Wood Fired Hot Tub Coil Kit Model A2 | Starter DIY Tub Heating Kit With Hose Fittings

Description

Singema Model A2 Wood Fired Hot Tub Coil With Hose Kit is a complete standalone thermosyphon heating kit made of food-grade stainless steel. It requires no electricity, gas, pumps or power supply; natural water circulation from fire heat warms your soaking tub. The all-in-one hose & fitting set enables tool-free DIY installation for portable, eco-friendly outdoor hot water soaking. See all coil kit models to compare configurations.

Product Information

Product Features

1. Food-grade stainless steel coil construction: rust-proof, safe for direct water contact, long outdoor service life
2. Precision rounded spiral tubing design: maximizes heat transfer efficiency, eliminates water flow blockages
3. Complete detachable hose assembly: fully disassembles for lightweight transport and storage
4. High/low temperature resistant silicone hoses: withstand extreme outdoor heat and freezing cold
5. All stainless steel connecting fittings & clamps: heat-proof, no melting under hot water circulation
6. Universal wall fittings compatible with tub walls 1mm to 70mm thick
7. Zero-tool installation: only drill two 25mm holes on your tub, attach fittings and hoses for instant use
8. Full all-in-one kit: every connection component included, no extra spare parts to purchase separately
9. Off-grid independent design: works without batteries, power cords, gas lines or water pumps
10. Compact coil structure: balances heating performance and easy portability for travel use

How to assemble Model A2 kit and DIY A Wood Fired Hot Tub?

1. Drill two φ25mm holes on tub sidewall, clear debris.
2. Mount 2 stainless tub fittings through holes, lock flanges against tub exterior (fits 1–60mm thick walls).
3. Place the Model A2 stainless coil aside the tub, route two coil extension pipes toward tub fittings.
4. Attach 2 heat-resistant silicone hoses between coil black tips and tub fittings; fasten all 4 stainless clamps tightly.
5. Fill tub with water (be over 5cm the upper port) , check all joints for leaks.
6. Light wood under coil; natural thermosyphon circulates hot water to tub with no electricity/pumps.

Quick Tip

Disconnect hoses for compact transport; drain all water before freezing weather storage. For a full list of precautions, review our safety guidelines, and check our tips for maximizing heating efficiency.

FAQ

Usage Scenarios

1. Backyard Family Relaxation Set up the heating coil with a wooden barrel tub in the backyard, burn firewood to heat water for nightly family soaking without connecting electricity or gas.
2. Campsite Outdoor Bathing Bring the compact DIY heating kit on car camping trips, heat tub water by a campfire to enjoy a warm bath after hiking and outdoor activities far from power grids.
3. Beach Seaside Soak Install the coil system beside the beach, use driftwood as fuel to warm water in a portable tub, creating a cozy hot soak experience while listening to ocean waves.
4. Winter Snowfield Outdoor Spa Build a temporary soaking tub in snowy outdoor spaces, heat water via wood combustion with this coil kit, perfect for warming up after skiing or snow walking.
5. Remote Off-Grid Cabin Use Equip an off-grid countryside cabin’s freestanding tub with this thermosyphon heating coil; rely only on firewood to supply hot bathing water with no utility bills.
6. Garden Party Leisure Experience Prepare several simple soaking tubs fitted with the A2 coil kit for small garden gatherings, letting guests enjoy warm hot tub sessions during evening outdoor parties.