Heaters for Wood-Fired Hot Tubs – Efficient and Durable Heating Solutions

Whether you're a hot tub manufacturer or a DIY enthusiast looking to build a wood fired hot tub, build your own tub, our selection of premium heaters is designed to meet your needs. These heaters are ideal for anyone interested in wood fired hot tub diy projects, diy hot tub wood fired setups, or even planning to build your own wood fired hot tub kit from scratch. 

Octa Heater for Wood Fired Hot Tubs

Our most popular heater model – available in three different sizes (varying in length): S, M, and L.
Octa heaters are equipped with advanced double-flow heat exchangers that significantly improve heating efficiency by enhancing heat transfer.

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  • Safety Features

  • Best Types of Firewood for UKO Heaters

  • Why Choose UKO Heaters for Your DIY Wood Fired Hot Tub Build?

Safety Features

Our heaters, including the UKO Octa stove, are engineered with essential safety features. If you're working on a diy cedar wood fired hot tub, diy wood burning hot tub, or wood hot tub diy system, safety matters. The external wood fired hot tub stove body stays cool to the touch, as the internal fire chamber is surrounded by a water jacket. The outer surface warms only to water temperature levels.

To support diy wood fired hot tub builders and homemade wood fired hot tub users, the heater chimney features a lower thermal guard to prevent burns. Always follow key fire safety guidelines: maintain a 2-metre distance from roofs or flammable items.

Best Firewood for Wood Burning Heaters

For your wood fired hot tub heater to operate efficiently, hardwoods like oak, ash, birch, maple, or beech are recommended. These are perfect whether you're running a chofu heater, chofu hot tub, or a wood stove hot tub build. Hardwoods produce consistent, hot fires with minimal smoke—ideal for diy wood burner hot tub setups.

To get the most from your hot tub wood stove, ensure your firewood is well-seasoned and has a moisture content below 20%.

Why Choose UKO Heaters for Your DIY Wood Fired Hot Tub Build?

Safety First – Designed with key safety features to ensure secure and comfortable use.

 

Fast Heating – Our wood fired hot tub stove with a double-pass heat exchanger ensures efficient water heating.

 

CE Certified – High-quality, EU-certified equipment for wood fired hot tub kit users.

 

Easy Maintenance – Great for build your own wood fired hot tub or wood fired bathtub diy enthusiasts wanting reliability.

  • Heater UKO Octa

  • Features

UKO Octa Outdoor Heater – Ideal for DIY Builds

A classic outdoor wood fired hot tub heater trusted for its durability and performance. Suitable for all wooden hot tub kit designs including fibreglass, acrylic, wood or barrel hot tub diy configurations. Whether you're building a self build wooden hot tub or a flat wooden hot tub, this heater supports it.

 

  • External placement = more space inside your tub.
  • Ideal for diy hot tub wood fired, make a wood fired hot tub, or wood fired outdoor bath diy projects
  • Timeless design meets modern function – great for wood burning hot tub heater setups.

Double-Pass Heat Exchanger in the UKO Octa Furnace

Perfect for building a wood fired hot tub or make your own wood fired hot tub projects, this innovative exchanger delivers:

  • Improved Heat Transfer – Hot air travels longer for better heating in wood fired hot tub builds.
  • Doubled Contact Surface – Maximizes heat exchange for faster results in wood burning jacuzzi heater projects.
  • Lower Emissions – Burn less wood, save more – ideal for off grid hot tub heater installations.

Whether you're starting with a diy cedar hot tub kit, setting up a wood burning water heater for hot tub, or finalizing your homemade wood burning hot tub, UKO Octa heaters provide the performance and quality your project needs.