Sauna 4-14 m³

Output 4.5 / 6 / 7.5 / 9 kW

Control 400 V 3N

Warranty 3 years

4.9 · Google

Electric Heater Fortis

Compact wall-mounted electric heater for 4-14 m³ saunas, with four outputs and compatible external control.

Models

Compact stainless-steel wall heater

Four outputs for 4-14 m³ saunas

20 kg stone load

3-year Saunamo warranty · made in the EU

Designed and manufactured in the EU

£466.00

VAT included

Sauna heater body
Basic installation hardware
Installation and user manual
Safety and clearance requirements

Not included in the base price; can be purchased separately:

Sauna stones
External control unit
Qualified electrical installation
Electrical cabling and breakers/RCDs
Heat-protection plates if required

4.5 kW: 4-6 m³
6 kW: 6-8 m³
7.5 kW: 7-10 m³
9 kW: 9-14 m³
Stones: 20 kg · 73 × 37.5 × 36 cm

Type Wall-mounted electric

Output 4.5 / 6 / 7.5 / 9 kW

Sauna 4-14 m³

Stones 20 kg

Dimensions 73 × 37.5 × 36 cm

Supply 400 V 3N

Installation Installation must be completed by a qualified professional according to the technical manual.

Before installation Confirm sauna volume, power supply or chimney route, safety clearances, and stone quantity before ordering.

Configuration and price

Configure this heater

Choose the right output, confirm variants, extras and the final price for the system that fits your sauna.

Recommended heaters for this model

From

£466.00

Taxes included. Shipping calculated at checkout.

Potency: 4.5kW

4.5kW
4.5kW
4.5kW
6kW
6kW
6kW
7.5kW
7.5kW
7.5kW
9kW
9kW
9kW

Product variants

In stock, ships in 1 week
Out of stock, ships in 6–8 weeks
Installation service available
Envio internacional

Why Electric Heater Fortis

A wall-mounted heater for compact saunas.

Fortis is a clean electric wall heater for saunas from 4 to 14 m³. Choose the output by the cabin’s real heated volume.

01 For whom

For small to medium saunasThe range starts at 4.5 kW for compact cabins and runs to 9 kW for 9-14 m³ rooms. The right model comes from volume, insulation, and glass area.

02 How it feels

Simple, predictable electric heatWith a modest stone load, Fortis feels direct and practical rather than slow and heavy. It is made for easy daily sauna use.

03 Where it fits

On the wall, with clear installation rulesThe wall-mounted format keeps the floor clear. Plan 8 cm side clearances and qualified 400 V 3N electrical installation.

Specifications and preparation

Fortis — what you need to know.

A wall-mounted electric heater in four outputs for saunas from 4 to 14 m³. Compact, practical, and chosen by the cabin’s real heated volume.

Output 4.5 / 6 / 7.5 / 9 kW 4-14 m³

Stones 20 kg Add when ordering

Control External compatible Add when ordering

Type Wall-mounted electric 400 V 3N

Best for compact and medium cabins

Fortis covers common small and medium sauna volumes: 4.5 kW for 4-6 m³, 6 kW for 6-8 m³, 7.5 kW for 7-10 m³, and 9 kW for 9-14 m³.

How to choose the model

Choose by the real heated volume. Glass, insulation, ventilation, and cold surfaces can justify moving up one output.

Stones and controls

Plan for 20 kg of stones, the external control unit, 400 V 3N supply, and qualified electrical installation. Fortis measures 73 × 37.5 × 36 cm.

Before ordering

Preparation

Choose 4.5, 6, 7.5, or 9 kW by sauna volume

Add 1 stone box for 20 kg

Add the compatible external control unit

Confirm clearances and ventilation from the manual

Manufacturing, warranty, and support

Designed and built in Europe.

Todos os aquecedores Saunamo incluem 3 anos de garantia e suporte técnico direto após a compra.

Warranty3 years

OriginEurope

AftercareTechnical support · parts · maintenance

Elétrico ou a lenha

Elétrico ou a lenha?

A escolha depende da forma como quer viver a sauna: praticidade e controlo no dia a dia, ou chama real e ritual tradicional.

Aquecedores elétricos↗

Para quem quer uma sauna simples de usar, com aquecimento previsível e controlo direto. Ideais para uso regular em casa, projetos interiores e instalações onde a conveniência é prioridade.

Uso frequente Control simples Rotina prática

Aquecedores a lenha↗

Para quem procura chama real, preparação manual e uma experiência mais tradicional. Ideais para saunas exteriores, casas de campo e projetos onde a atmosfera é tão importante como a praticidade.

Chama real Ritual tradicional Projetos com chaminé

Ainda tem dúvidas?

Diga-nos o volume da sauna, o local de instalação e o tipo de experiência que procura. Ajudamos a escolher entre elétrico e lenha.

Saunamo Lifestyle

Não nos limitamos a vender produtos de bem-estar — criamos experiências com significado. Cuidamos genuinamente dos nossos clientes e orgulhamo-nos do nosso trabalho artesanal, oferecendo produtos de elevada qualidade, concebidos para durar anos. São produtos que você e a sua família poderão desfrutar, vezes sem conta.

Clive H.

Excellent product and excellent service. A very high-level company that delivers what it promises. From the first conversations to the final installation, the whole process was impressive.

Matt F.

The quality of the sauna is incredible. The team handled everything with real professionalism and stayed focused on the customer throughout. We felt confident from start to finish.

Anna S.

We were impressed by the quality, design and functionality. Communication was always fast and reliable, and every question was answered clearly.

Derek H.

The build quality is exemplary. The customer service is among the best we have experienced. It has been a very valuable investment for our home and wellbeing.

VB

Vitali B.

Absolutely worth every euro. The sauna arrived in perfect condition and the team was extremely helpful throughout the process.

JC

Jorge C.

I recommend Saunamo 100%. Excellent product and fantastic team. From the first contact to the final stage, everything was exemplary.

SW

Sarah W.

From order to delivery, the whole experience was smooth. The sauna is beautifully built and the after-purchase support has been excellent.

PM

Pedro M.

One of the best purchases we have made for our home. Authentic quality and high-level customer support.

Decision support

Heater FAQ before ordering

Power, stones, controls and installation all affect the right heater choice.

01 How do I choose the right heater model? +

Choose by the sauna’s actual volume, insulation, glass area, preferred heat style and installation requirements.

02 Are sauna stones included? +

Stones can be added as an extra where applicable. Confirm the correct stone quantity for the selected model.

03 Who should install the heater? +

Electric heaters require a qualified electrician. Wood-fired heaters require correct base, chimney route, ventilation and safety clearances.

04 What should I confirm before ordering? +

Confirm volume, power supply or chimney route, required accessories, stone quantity, clearances and the technical manual for the model.

Price

£923

Sauna

6–30 m³

Electric Heater Fortis

4.5 / 6 / 7.5 / 9 kW

Aquecedor Elétrico Kajo

6,6 / 9 / 10,5 kW

Aquecedor Elétrico Taika

6,6 / 9 / 10,5 kW

Wood-fired Heater Pyros

Price

£923

Sauna

6–30 m³

Tuli 16: 14,9 kW · Tuli 20: 21,9 kW · Tuli 30: 25 kW

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