Hot Tub Delux Internal

Efficient heating, simplest wood-fired setup

Price

£4,195 inc VAT & Delivery Included

Free UK Mainland Delivery

Every Order Plants 5 Trees

Flat‑Pack or Installation

Handcrafted in Estonia

Choose from Clear, Bronze or Mirror Glass

Comprehensive Warranty

Electric or Wood Fired Heating Options

Call 03330 907890 for expert advice from our team

Choose your installation

Choose your sauna heater

Choose your add-ons

About

Heat with nothing lost along the way. Deluxe Tub Internal places the wood burner inside the tub itself, heating water directly without any pipework losses between a separate firebox and the bath. 180cm of Thermowood holds two to three bathers comfortably, with a small partition keeping everyone safely clear of the firebox. A self contained, efficient setup for anyone who values directness over maximum internal space.

Built for UK Weather

Built for UK Weather

Everything You Need to Install

Everything You Need to Install

Designed for Fast Heat-Up

Designed for Fast Heat-Up

Specification

  • Shape: Round
  • Accommodates: 2-3 People
  • Diameter: 180 cm
  • Max Height: 93 cm
  • Wall Thickness: 18 mm
  • Material: Thermowood
  • Assembly: Self-assembly
  • Insulated: No
  • Design Note: Wood-fired hot tub with internal heater
  • Power Supply: Single or Three Phase
  • Heater Compatibility: Electric & Wood-Fired

Designed around your ritual

Full Glass Back Window

Full Glass Back Window

Bring the outdoors in. A full glass rear window fills the sauna with natural light and opens up wider scenic views.
Half Moon Back Window

Half Moon Back Window

Privacy meets natural light. A half-moon rear window creates a softer, brighter feel while keeping more enclosed wall space.
Full Glass Front Barrel

Full Glass Front Barrel

Turn every session outward. Full front glazing opens the barrel sauna to natural light and uninterrupted outdoor views.
Full Glass Front Cube

Full Glass Front Cube

Modern design, open views. Full-height front glazing creates a brighter, cleaner space with a sharper architectural finish.
LED Lighting Kits

LED Lighting Kits

Set the perfect mood. Integrated LED lighting creates warmth and atmosphere, transforming the sauna experience day or night
Bluetooth Speakers

Bluetooth Speakers

Soundtrack your downtime. Built-in Bluetooth speakers bring music, podcasts, and guided sessions straight into your sauna.
Quality Accessories

Quality Accessories

Complete the experience properly. Practical finishing touches that improve comfort, convenience, and the overall sauna ritual.
Premium Thermowood

Premium Thermowood

Built to age beautifully. Thermowood offers a richer finish, stronger durability, and better long-term performance.

Frequently Asked Questions

2-Year Guarantee

2-Year Guarantee

Built for years of wellness and relaxation

Free UK Mainland Delivery

Free UK Mainland Delivery

Delivery throughout England, Wales, and Scotland.

Expert Help, When You Need It

Expert Help, When You Need It

Friendly specialist support before and after your purchase. Book a free consultation.
Delivered flat-packed for self-assembly, with free UK mainland delivery on qualifying orders. The larger Cube format requires a little more assembly time than the smaller Icon models, so we recommend allowing a weekend and having a second person to help. A solid, level base and suitable delivery access are required. For a complete setup, select Professional Installation and choose your preferred date, allowing for the stated production lead time. We’ll then arrange the installation around your requirements, including any additional preparation or works needed to accommodate your sauna where possible.
Caring for an internal burner wood fired hot tub follows similar principles to external designs, with some specific attention to the integrated heater. After each session, let the firebox cool fully before clearing ash, taking care given its position within the tub structure itself, and check for good airflow before lighting again. Drain and refresh the bathing water regularly depending on usage, and wipe down the interior periodically, checking around the internal burner housing for any signs of wear or leaking where it meets the main tub structure. This junction is worth checking slightly more carefully than the joints on an external burner model, simply because of its position within the bathing volume. Thermowood's natural weather resistance keeps general exterior maintenance minimal. A light oil treatment every couple of years maintains the original colour if preferred, otherwise letting the timber weather naturally to a silvery grey requires no upkeep at all. Check the internal burner's components for soot build-up periodically, since this affects heating efficiency over time regardless of burner position.

Production takes 2-4 weeks, plus 1-2 weeks dispatch time for pallet haulage. This sauna is delivered flat packed unless otherwise stated. Free UK mainland shipping applies. If your order exceeds standard pallet limits due to length, weight, or quantity, additional pallet charges may apply and are quoted separately based on postcode.

Deliveries are kerbside and unloaded using the vehicle's tail lift, so no machinery or extra help is needed on your side. For properties with tight or restricted access, we can arrange delivery on a smaller vehicle with the goods handballed off instead — just let us know your access situation before ordering.

Please have a solid, level base and clear access ready before delivery. Pallet deliveries are kerbside only, and once unloaded you're responsible for moving the goods onto your property. Final positioning is not included unless you use our installation team. A comprehensive assembly manual is included, and self-assembly is straightforward with basic DIY skills.

Assembly & Installation
Delivered flat-packed for self-assembly, with free UK mainland delivery on qualifying orders. The larger Cube format requires a little more assembly time than the smaller Icon models, so we recommend allowing a weekend and having a second person to help. A solid, level base and suitable delivery access are required. For a complete setup, select Professional Installation and choose your preferred date, allowing for the stated production lead time. We’ll then arrange the installation around your requirements, including any additional preparation or works needed to accommodate your sauna where possible.
Cleaning & Care
Caring for an internal burner wood fired hot tub follows similar principles to external designs, with some specific attention to the integrated heater. After each session, let the firebox cool fully before clearing ash, taking care given its position within the tub structure itself, and check for good airflow before lighting again. Drain and refresh the bathing water regularly depending on usage, and wipe down the interior periodically, checking around the internal burner housing for any signs of wear or leaking where it meets the main tub structure. This junction is worth checking slightly more carefully than the joints on an external burner model, simply because of its position within the bathing volume. Thermowood's natural weather resistance keeps general exterior maintenance minimal. A light oil treatment every couple of years maintains the original colour if preferred, otherwise letting the timber weather naturally to a silvery grey requires no upkeep at all. Check the internal burner's components for soot build-up periodically, since this affects heating efficiency over time regardless of burner position.
Delivery

Production takes 2-4 weeks, plus 1-2 weeks dispatch time for pallet haulage. This sauna is delivered flat packed unless otherwise stated. Free UK mainland shipping applies. If your order exceeds standard pallet limits due to length, weight, or quantity, additional pallet charges may apply and are quoted separately based on postcode.

Deliveries are kerbside and unloaded using the vehicle's tail lift, so no machinery or extra help is needed on your side. For properties with tight or restricted access, we can arrange delivery on a smaller vehicle with the goods handballed off instead — just let us know your access situation before ordering.

Please have a solid, level base and clear access ready before delivery. Pallet deliveries are kerbside only, and once unloaded you're responsible for moving the goods onto your property. Final positioning is not included unless you use our installation team. A comprehensive assembly manual is included, and self-assembly is straightforward with basic DIY skills.

Direct, efficient internal wood heating

The Deluxe Tub Internal is built with its wood burner positioned inside the tub itself, a traditional configuration that keeps the heat source within the water rather than mounted externally. At 180 centimetres in diameter and 93 centimetres deep, it is sized for relaxed use by two or three people, with Thermowood construction handling the moisture resistance needed for a tub that spends its life outdoors full of heated water across every season.

An internal burner heats the water more directly than an external stove, since there is no heat loss through connecting pipework between a separate firebox and the tub itself, though it does mean the burner occupies some of the internal space and needs a small partition to keep bathers safely away from the firebox while it is in use. This configuration tends to suit anyone who values heating efficiency and a more traditional wood fired tub experience over maximising every last inch of internal space for bathers.

Deluxe Tub Internal is a solid choice for anyone wanting a straightforward, efficient wood fired hot tub without the added complexity of a separate external heating system to install and connect, keeping the whole setup as one self contained unit that arrives, sits in the garden, and gets used without any further plumbing or installation considerations beyond a level, stable base.

From Your Sketch
To Reality ✏️

A sauna built entirely around your space, your ideas and how you want it to feel.

Send us your hand-drawn sketches, and we’ll turn them into detailed CAD designs ready to bring your vision to life.

Chat With Us →
Bespoke wood-fired sauna and wellness space
Free Mainland UK Delivery Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
Free Mainland UK Delivery Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
Free Mainland UK Delivery Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
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Designed to Heat Efficiently

Every curve has a purpose, helping your sauna reach temperature faster while delivering an even, enveloping warmth.

Crafted from Exceptional Spruce

Natural spruce or heat-treated for durability and stability, our premium timber is chosen for its natural beauty and long-lasting performance.

Premium Tempered Glass

Our premium bronzed 8mm thick tempered glazing delivers a refined finish, excellent durability and complete confidence in every sauna.

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