Product Description
TimberIN SubmergeFire™ 26 – Internal Wood-Fired Hot Tub Heater (26 kW)
Upgrade your hot tub with the TimberIN SubmergeFire™ 26, a premium internal, submersible wood-fired heater engineered for efficient, direct heat transfer and minimal visual impact.
Unlike external heaters, the SubmergeFire™ 26 installs inside the tub, significantly reducing pipe runs and heat loss while ensuring rapid warm-up times. Its snorkel-style vertical chimney design allows safe exhaust routing while keeping the heater body compact and unobtrusive.
Constructed from durable stainless steel, this heater is built to withstand constant water exposure and high operating temperatures, making it ideal for year-round outdoor use.
Key Benefits
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Internal submersible design – installed directly in the tub for maximum efficiency
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26 kW heating power – ideal for typical garden wooden hot tubs
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Reduced heat loss – no external pipework required
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Stainless steel construction – corrosion-resistant and long-lasting
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Compact footprint – clean aesthetics with no bulky external heater box
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Multiple flue diameter options – adaptable to different installations
Installation & Safety
The SubmergeFire™ 26 must be installed following manufacturer guidance, using approved gaskets, correct clearances, and a properly sized chimney/flue. Adequate ventilation is essential. Professional installation is strongly recommended, and all local safety and building regulations must be observed.
👉 Looking for alternatives? View all wood-fired hot tub heaters in our range.
🔧 Technical Specifications Table (from drawing)
| Specification | Value |
|---|---|
| Model | TimberIN SubmergeFire™ 26 |
| Heater type | Internal / Submersible (Snorkel-style) |
| Fuel | Wood-fired |
| Nominal output | 26 kW |
| Main body width | 700 mm |
| Main body depth | 300 mm |
| Overall height (body) | 900 mm |
| Total height incl. chimney base | approx. 975 mm |
| Base footprint (W × D) | 800 × 350 mm |
| Lower section height | 250 mm |
| Upper chamber height | 650 mm |
| Firebox door opening | approx. 360 × 340 mm |
| Water circulation ports | 4 ports (front-facing) |
| Chimney / flue diameter options | Ø160 / Ø180 / Ø200 / Ø220 mm |
| Material | Stainless steel |
| Installation position | Inside hot tub |
| Mounting | Internal floor / base mounted |
| Typical application | 1.8–2.2 m wooden hot tubs (size & insulation dependent) |
(Dimensions based on technical drawing; minor tolerances may apply.)
👉 See all our wood-fired hot tub heaters to compare models and outputs.
