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ThermaSauna 4M with a relax room is a perfect barrel shaped outdoor sauna for spacious homestead or a small yard which is ready to use first day after delivery. The sauna has 2 benches (200x58 cm) inside the sauna, which allows 2 persons laying down or 4-6 persons sitting in the sauna. Also, it has a relaxation room with benches, where you can change your clothes, have some relax, cool down between sauna sessions and enjoy your time with your family and friends.


Sauna does not require heavy foundation. It can be placed almost anywhere temporary, but for a permanent installation we recommend to put it on terrace, paving, stone chips or at least few bricks under corners. Construction is strong and very stable, which makes it safe to lift the whole sauna (i.e. for transportation, to change location in your garden, to sell it in future etc).


Sauna specifications:

  • Walls and roof are made of 42 mm solid spruce wood. Wall elements are tightened with long screws which ensure strength and stability of construction. Sauna comes fully built and ready to use instantly after delivery.
  • Roof is covered with bitumen shingles.
  • Floor in sauna room is made from untreated 27 mm terrace boards with air gaps for ventilation and water drainage. 
  • An adjustable ventilation grid is installed in the highest point of the wall.
  • All wood used for floor frame and construction is impregnated. 
  • For electricity and lights we use Harvia Light sauna lamps, special heat and water resistant cables and IP65 waterproof switches.
  • Door in sauna and relax made of tempered and tinted glass.
  • There are 2 full size benches (200x58 cm) inside the sauna. Benches are made from thermowood.
  • Relax room includes 2 benches.
  • Outdoor painting is included (transparent grey, brown, teak, red, grey or black colors). Other colors available at an extra cost.


Heater options:

  • Harvia M3 wood-fire heater with stones and uninsulated chimney through the wall costs 8.000 kr. The heating time is a maximum of 1 hour. The heater is placed on a special floor protective pad (10 cm high). The walls near the unit are protected by a Cembrit board. The chimney outlet is insulated with a special heat-resistant wool, Cembrit board on the inside and a stainless steel plate on the outside.
  • The chimney can be replaced with insulated Harvia WHP1500 through the roof for 4.000 kr. 
  • Electric Harvia Trendi KIP 90 (9 kW) heater with stones costs 5.000 kr.
  • Electric Harvia Cilindro PC 90 (9 kW) heater with stones costs 7.000 kr.


Additional accessories are available:

  • Wooden doors with or without window instead of glass door 1500 kr.
  • 2 windows (30x94 cm) 1600 kr.
  • Half moon window 4000 kr (steel bands required +3000 kr)
  • Full moon window 6000 kr (steel bands required +3000 kr)
  • Water tank 2000 kr/3000 kr (different models).
  • LED under the benches 4000 kr.


It is also possible to order 5M or 5.4M saunas. Please contact us regarding price offer.


Capacity: 2-6 persons.

Sauna room length: 200 cm

Relax room length: 170 cm

Diameter 228/237 cm.

Weight: approx 1300 kg

ThermaSauna 4M

  • We will gladly accept your order by email

    You may also call us for any assistance +46 (73) 1214444

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