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Quick Overview

Fonda delivers wave after wave of sharp and intense heat.

The modernly designed FONDA stove series is a smart option for fans of the traditional Finnish sauna, thanks to its large, 20-kg stone compartment and powerful heat output. Fonda delivers wave after wave of sharp and intense heat to every corner of the sauna room. Fonda stoves are primarily intended for sauna rooms of 5-12 m3.

Choose from two models: Fonda STJ incorporates an integrated control panel, thermostat and timer (9 + 3 h), and Fonda DET is used with either the T1 or EC 50 touchpad controller.



Fonda STJ is available in stylish grey, and Fonda DET in grey or a warm red.


The stove can be mounted on the wall or placed on the floor. For mounting on the floor, you can order legs of the same colour than the stove as an accessory.

Fitting control unit Fonda


This new control panel is designed to control the heater or steam bath – and it is good looking too. T1 is equipped with a touch-control and it shows temperature and time in operating mode. It is also equipped with a switch for lighting, an easy control for the temperature, a switch between Fahrenheit/Celsius, 12 h/24 h format, multiple languages and other more advanced settings and a testing possibility.


The EC50 control panel makes it simple and economical to have complete control of your sauna. The panel blends discretely and elegantly into your bathroom with its clean and essential design. It has an easy-to-read display for convenient control of the start- up time, temperature and lighting. The panel can be set for 0-3 hours of heating time. You can also set a countdown between 0-10 hours for the heater to start.

The panel incorporates a child- proof code lock to prevent accidental operation. The EC50 with its practical features is a smart choice for anyone who wants precise control of their sauna – at an affordable price.

Technical specifications

Type Power (kW) Sauna size (m3) Size (WxHxD) Quantity of rocks (kg)
Fonda ST 4.4 4.5 4 – 6 448 x 665 x 364 20
Fonda ST 6.6 6.0 5 – 9 448 x 665 x 364 20
Fonda ST 8.0 8.0 8 – 12 448 x 665 x 364 20
Fonda DET 4.4 4.5 4 – 6 448 x 665 x 364 20
Fonda DET 6.6 6.0 5 – 9 448 x 665 x 364 20
Fonda DET 8.0 8.0 8 – 12 448 x 665 x 364 20

Fonda safety distance

Type Side (mm) Front (mm) Ceiling (mm) Floor (mm)
Fonda ST 4.4 50 50 1135 100
Fonda ST 6.6 50 50 1135 100
Fonda ST 8.0 50 50 1135 100
Fonda DET 4.4 50 50 1135 100
Fonda DET 6.6 50 50 1135 100
Fonda DET 8.0 50 50 1135 100

One heater, multiple sensations

BWT from Helo means several sauna experiences in one solution. Enjoy your favorite sauna alone or share different sauna experiences with family and friends. With a BWT-ready sauna heater from Helo, it is all possible. The flexibility of BWT from Helo means several opportunities for a pleasurable sauna experience.

Keeping CO 2 emissions to a minimum and your pleasure at a maximum

Helo BWT is a cost effective and highly energy efficient sauna solution. Steam generation happens without any auxiliary power or added technology. One intelligent sauna solution allows you to enjoy your favorite sauna experience from a single sauna and steam solution. The ingenuity that has gone into developing BWT has resulted in an innovation keeping CO2 emissions to a minimum and your pleasure at a maximum.

Enjoy a multi layered sauna experience from one single sauna solution. In our BWT-ready saunas, we have created a number of different but equally pleasurable sauna experiences packed into one simple solution. It is BWT from Helo. A sauna that changes with you.


Less wear and longer life protects your investment.

The generally lower levels of heat used in a BWT-ready sauna from Helo means less stress on the sauna room and hardware. Your sauna room will last longer and the simple engineering of BWT keeps technical maintenance to a minimum.


Customise your sauna experience and comfort in an authentic Finnish sauna environment. With our BWT-ready sauna heaters you may enjoy a full spectrum of relaxing and luxurious sauna therapies from one single solution. It is flexible, it is multi layered. It is all in BWT from Helo.

Gentle sauna

Add water to BWT-container, set temperature to:


Gentle sauna

Enveloping steam

Longer sessions

Bio-aroma available


Fill BWT water container and set temperature to:


More humidity

Lower temperature

A gentle sauna experience

Bio-aroma available


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