Quick Overview

Designed for large, commercial-sized sauna rooms.

Freestanding SKLE and Laava stoves have been the standard of the industry for more than 25 years. They are suitable for saunas with a capacity of 8-24 m3. SKLE and Laava are designed for large, commercial-sized saunas. With a maximum amount of stones of 60 kg, these stoves create a pleasant and relaxing sauna experience.

Technically Laava are SKLE quite similar and only differ in the design and colours of casing. SKLE is more angular and has a shiny look, while Laava has rounded corners and a darker, stylish exterior.

SKLE and Laava stoves are controlled by separate controllers. The options are the touchscreen T2 controller with contactor case WE 14, or the digital Digi II controller with contactor case WE 4. The range also includes the analogue OK 33 PS-3 controller and the OK 33 PUi controller used with the weekly clock EK 5 P.

The top-quality design of the stoves ensures cost-effective energy use, trouble-free usage, and effortless maintenance.


The Features

Control systems

Available with a choice of intuitive control systems — easy to learn and use.


Cost-effective energy use without compromise to climate quality.

Easy maintenance

Quality engineered for problem-free performance and easy maintenance — specifically for the needs of professional or commercial sauna rooms.


Proven performance, LAAVA has been the industry standard for more than 25 years.


An investment that can pay for itself by adding value to your facilities and ensuring customer satisfaction and returns.

Fitting control unit SKLE/Laava

Digi I

DIGI I is a simple but smart solution that gives you most basic comfort functions at the touch of a button. DIGI I lets you preheat your sauna anytime within a 24 hour period, ensuring a relaxing and refreshing climate is ready when you are without having to wait. The digital touch pad is also your control for temperature, lighting and the fan. DIGI I is designed for wall or flush mounting outside the sauna.

Digi II

Such as Cava and Pikkutonttu, or for commercial type heaters such as SKLE, Octa and Seidankivi. With preheating timings from 0-24 hours, set heating time of 0-6 hours, and one-touch preset bathing programmes, DIGI II gives you maximum flexibility in managing comfort.

You’ll also find keys for temperature adjustment, light and fan operation, and the high-visibility LCD display provides information in your choice 5 languages (Finnish, Swedish, English, German and Dutch).

Flush or surface mounted outside the sauna, Helo Digi II has a total size of 138x173x34 mm (wxhxd).

OK 33 PS-3

OK 33 PS- 3 control unit has 0-8 hours preset time and 0-4 hours working time or without pre-selection 0-12 hours working time. It also has an option for controlling the sauna lighting. Control panel is installed in a dry area outside the sauna room. It is supplied with a sensor Olet 6-1 with a five-meter cable.

Compatible heaters: Laava and SKLE

OK 33 PUi

OK 33 PUi is used for remote control of the sauna. Every day of the week can have its own program for sauna bathing. It requires a weekly timer EK 5 P. The maximum working time is 12 hours and then it has 6 hours pause time. Control panel in a dry area outside the sauna room. It is supplied with a sensor Olet 6-1 with a five-meter cable.

Compatible heaters: Laava and SKLE

WE 4

Contactor box WE 4 is used together with Digi I and Digi II control units for SKLE, Laava and Octa heaters. It is installed in a dry area outside the sauna. Dimensions are 340 x 195 x 90 (L x H x D).


This new control panel is designed to control the heater or steam bath – and it is good looking too. T2 is equipped with a touch-control and it shows temperature and time in operating mode. It has the ability to pre-program the heating of your sauna up to 23 hours ahead. It is also equipped with a switch for lighting, an easy control for the temperature, a switch between Fahrenheit/Celsius, a 12 h/24 h format, multiple language and other more advanced settings and a testing possibility.

WE 14

Contactor box WE14 is used together with T2 control units for SKLE, Laava, SKLA, Magma, Octa and Saga Electro heaters. It is installed in a dry area outside the sauna. Dimensions are 345 x 310 x 120 (L x H x D).

Technical specifications

Type Power (kW) Sauna size (m3) Size (WxHxD) Stones (kg) BWT
Laava 901 9.0 8 – 13 540 x 715 x 500 60
Laava 1051 10.5 9 – 15 540 x 715 x 500 60 available
Laava 1201 12.0 10 – 18 540 x 715 x 500 60 available
Laava 1501 15.0 14 – 24 540 x 715 x 500 60 available
SKLE 901 9.0 8 – 13 510 x 700 x 475 60
SKLE 1051 10.5 9 – 15 510 x 700 x 475 60
SKLE 1201 12.0 10 – 18 510 x 700 x 475 60
SKLE 1501 15.0 14 – 24 510 x 700 x 475 60

Safety distance

Type Side (mm) Front (mm) Back (mm) Ceiling, (mm)
Laava/SKLE 901 80 80 110 1200
Laava/SKLE 1051 80 80 110 1200
Laava/SKLE 1201 120 120 120 1400
Laava/SKLE 1501 120 120 120 1400

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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