WOOD-FIRED HOT TUB – COMPLETE GUIDE

⭐ 1. WOOD-FIRED HOT TUB – COMPLETE GUIDE
H1: Wood-Fired Hot Tub – Complete Guide (2025)
A wood-fired hot tub is the purest form of wellness. No electricity, no complex systems — just warm water, fire, and relaxation.
In this complete guide, you’ll learn everything about usage, costs, safety, benefits, and what to look for when buying a wood-fired hot tub.

H2: What is a wood-fired hot tub?

A wood-fired hot tub is heated by an internal or external wood stove. The fire heats the water through a closed circuit or direct contact.

H3: Internal stove

  • Faster heating

  • Compact solution

  • Suitable for smaller gardens

  • Less suitable for rentals (safety reasons)

H3: External stove (Malu’s standard)

  • Safer

  • Better heat circulation

  • More seating space

  • Easy to clean

  • Ideal for B&Bs, campsites and families

At Malu, we use only external stainless-steel heaters for optimal heat distribution and safety.

H2: How does a wood-fired hot tub work?

  • Fill the tub with clean water

  • Light the fire in the external stove

  • Water circulates naturally through temperature differences

  • Within 1.5–2.5 hours the water reaches ± 38°C

  • Add wood to maintain a stable temperature

Tip: Use dry hardwood for the best efficiency.

H2: Benefits of a wood-fired hot tub

1. No electricity required

Perfect for nature houses, campsites, and gardens without power supply.

2. Low operating costs

You burn wood — no electricity, no pump consumption.

3. Pure wellness experience

The sound of crackling wood and warm water creates a unique atmosphere.

4. Fast heating

Malu’s wood stoves heat the water in 90–150 minutes.

5. Ideal for rentals

Perfect for glamping, B&Bs and holiday parks.
Guests heat it themselves = lower costs for you.

H2: How much wood does a hot tub use?

On average:

  • 25–35 kg of wood per full heating

  • Costs: €6 – €12 per session (depending on wood type)

Even with daily use, wood remains cheaper than electricity.

H2: Wood-fired hot tub maintenance

After each use

  • Circulate water with a sand filter (recommended)

  • Empty the stove

  • Put the lid on to retain heat

Weekly

  • Test water quality

  • Clean the filter

Monthly

  • Replace water (without filter)

  • Every 6–8 weeks with filter

Winter preparation

  • Lower or fully drain the water

  • Make the pipes frost-free

  • Keep the stove dry

H2: Malu wood-fired hot tubs

Our wood-fired hot tubs feature:

  • Fiberglass tub (hygienic & durable)

  • External stainless-steel stove

  • Natural wooden finish

  • Options such as hydrojets, LED and bubbles

  • Capacity 2–10 people

All models are designed for quiet and carefree use.

H2: Frequently Asked Questions (FAQ)

How long does a wood-fired hot tub take to heat?
1.5 to 2.5 hours depending on season and size.

How often should you change the water?
With sand filter: every 6–8 weeks.
Without filter: weekly.

How much does a wood-fired hot tub cost?
€3,000 – €5,500 depending on model and options.

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Curious which model suits your garden or accommodation?
Request a free quote.