FERO sauna and SANARIUM® heater
FERO sauna and SANARIUM® heater

FERO sauna and SANARIUM® heater

  • Small and compact
  • In two sizes

Compact sauna and SANARIUM® floor standing heater in two sizes

With its elegant design based on the MAJUS sauna heater, the FERO fits harmoniously into many of our sauna series. On request, the FERO is available with a SANARIUM® function and in two heater sizes, each flocked with visible sides that protect the cast aluminium frame basket and railing against combustion.

FERO sauna and SANARIUM® heater

For any sauna

An attractive, compact and flexible sauna heater that leaves nothing to be desired.

High quality for long-term enjoyment

Our heaters are of high quality, safety and durability. Thanks to particularly favourable airflow and thus low air outlet temperatures, they create a perfect feel-good climate.

Finds a place in every sauna

For smaller sauna floor plans where it may prove difficult to fit the MAJUS, the free-standing FERO heater offers an alternative. With its unobtrusive design, it fits harmoniously into many sauna series and - despite its compact size - makes intensive infusions possible owing to its 40 kg of sauna stones.


  • Elegant, compact sauna free-standing heater matching the MAJUS design line
  • Two heater sizes: 3.3 - 4.5 KW connected load and 6 - 12 KW
  • VDE-tested
  • Flocked outer jacket and railing protect against the risk of burns
  • Cast aluminum frame stone basket
  • Original Finnish olivine stones
  • Also available as a SANARIUM® heater
  • Steam outlet with aroma cup on front side
  • Quiet, pleasant vaporizer sounds
  • Water tank level indicator

Find your nearest KLAFS partners

Select your country to find find your nearest KLAFS partners and contact them today.

Will the FERO sauna heater fit in my desired sauna?

The sauna heater should do one thing above all: optimally heat the sauna and provide the perfect sauna climate. Therefore, it is essential that the selected heater fits the size of the cabin.  

The VDE-tested FERO sauna heater is available in two sizes with corresponding dimensions, heating capacities and stone quantities. The FERO is therefore suitable for both small sauna cabins and larger models. The dimensions of the smallest variant are 820 x 300 x 300 mm (H x W x D). In this size, the heater is available with a heating capacity of 3.3 kW/230 V and approx. 7 kg of infusion stones, as well as with a heating capacity of 4.5 kW/400 V and approx. 14 kg of infusion stones. The large version, with dimensions of 870 x 400 x 400 mm (H x W x D), is available in heating capacities of 6, 9 and 12 kW/400 V and approx. 40 kg of original Finnish olivine stones. 

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