Sauneco
Ignis-V40 External Wood-Fired Hot Tub Stove – 40kW Marine Aluminium
Ignis-V40 External Wood-Fired Hot Tub Stove – 40kW Marine Aluminium
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The Ignis-V40 is a 40kW external wood-fired hot tub stove built from high-quality, seawater-resistant marine aluminium. Designed for hot tubs up to 6.56 ft (200 cm) in diameter, it sits outside the tub and heats the water via the natural thermosiphon principle — cold water flows in through the lower pipe, heated water returns to the tub through the upper pipe, with no pump or electricity required.
Marine aluminium conducts heat approximately 15× more efficiently than stainless steel, making this stove up to 30% more effective. The 3 mm thick shell is twice the thickness of standard stainless steel units, yet 30% lighter — and aluminium holds its shape over time, where thin stainless steel can warp with prolonged use. Every weld is completed using high-quality MIG technique and individually tested for impermeability before dispatch.
All prices are fully inclusive of VAT, UK customs fees, import duties, and shipping to the UK mainland. No hidden charges at checkout.
- Ignis-V40 external hot tub stove – 40kW, seawater-resistant marine aluminium
- Stainless steel chimney – 2 m (6.56 ft), two-part
- Model: Ignis-V40
- Type: Wood-fired (external)
- Power output: 40 kW
- Material: Marine aluminium (seawater resistant), 3 mm thick
- Suitable for: Hot tubs up to 200 cm (6.56 ft) diameter
- Width: 400 mm (15.7 in)
- Height: 600 mm (23.6 in)
- Length: 600 mm (23.6 in)
- Weight: 35 kg (77 lb)
- Chimney: 2,000 mm stainless steel, two-part
- Connection pipe diameter: 50 mm (1.97 in)
- Never start heating before the hot tub is filled with water. The connection pipes must be submerged before lighting. Operating dry will permanently damage the unit.
- When temperatures reach -1°C or below, drain the stove fully using the tap on the underside to prevent frost damage.
Estimated delivery across the UK and Europe within 5 days. All prices are fully inclusive of VAT, customs fees, import duties, and UK mainland shipping.