External Wood Fired Hot Tub Heater Kit UK 22KW

£950 £850

Durable external wood fired hot tub heater kit UK in stainless steel. Complete with flue and fittings, this efficient heater warms your tub quickly while saving interior space. Easy access, reliable performance, and perfect for UK gardens. Delivered nationwide with full installation kit included.

SKU: 22heater. Category:

Product Description

External Wood Fired Hot Tub Heater Kit UK

Upgrade your hot tub setup with this premium external wood fired hot tub heater kit UK. Designed for outdoor use, it features heavy-duty construction, efficient combustion, and all components needed to integrate with your tub externallyโ€”ensuring fast and reliable heating with minimal space intrusion.

Key Features & Benefits

  • External design: Mounts outside the tub body, freeing internal space and easy access for maintenance.
  • High-efficiency combustion: Optimised firebox and airflow deliver excellent heat transfer to water.
  • Robust materials: Built from corrosion-resistant stainless steel with thermal insulation for longevity.
  • Full kit included: Comes with flue, connectors, piping, and hardware for UK installations.
  • Scalable performance: Suitable for a range of hot tub sizes depending on flow and heat loss parameters.

Specifications

  • Material: Stainless steel body & connections
  • Design: External heater module with heat-exchanger elements
  • Connections: Inlet/outlet pipe fittings compatible with standard plumbing
  • Accessories: Flue, chimney sections, insulation, mounting brackets
  • Capacity Range: Designed to support typical UK garden hot tubs (22 kW)

Installation & Usage (UK)

This heater kit is intended to be installed externally, adjacent to your hot tub. It requires proper clearance, safe flue routing, and weather protection. Use high-temperature rated piping and follow all UK building and safety codes. Itโ€™s ideal for retrofits or new tub installations alike.

Why Choose This External Kit?

  • Preserves tub interior โ€” no bulky heater inside the shell
  • Easy maintenance access โ€” works independently from the tub shell
  • Flexible placement โ€” you can position it optimally for airflow and service
  • Long-lasting โ€” crafted from stainless steel with protective coatings

Related Products & Resources

Explore our full lineup of Outdoor Sauna & Hot Tub Combos and Wood-Burning Hot Tubs

For guidance, read our Hot Tub Ownership Guide

FAQs

Can this kit support large tubs?
Yes, with proper plumbing and flow design, this external heater kit can serve bigger tubs when sized appropriately.

Why external and not integrated?
External kits free up interior space, avoid heat stress on the tub shell, and allow easier servicing.

Is the flue included?
Yes, the kit includes a matched flue and chimney sections suitable for UK installations.

What maintenance is needed?
Regular ash removal, inspecting gaskets & seals, and checking pipe integrity. Use quality hardwood for best results.


Technical data & videos

 

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