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 fundament. 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 38 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. The relax room floor is made of black plywood.
  • 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.
  • 2 entrance door made of tempered and tinted glass.
  • 2 windows (30x94 cm) on the back wall in tempered glass.
  • There are 2 full size benches (200x58 cm) inside the sauna. Benches are made from aspen or black alder wood.
  • Relax room includes 2 benches.
  • Outdoor painting is included (transparent grey, brown, teak, red, grey or black colors). Other colors available (+2500 kr).


Heater options:

  • Harvia M2 wood heater with stones and uninsulated chimney through the wall costs 7000 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 3100 kr. 
  • Electric Harvia Trendi KIP 90 9 kW heater with stones costs 3500 kr.


Additional accessories are available:

  • Half-moon window 2700 kr (Harvia WHP1500 chimney through the roof (+2500 kr) and 3 steel bands (+2100 kr) are required).
  • Panoramic window 120x148 cm 1700 kr (Harvia WHP1500 chimney through the roof +2500 kr is required). 
  • Exterior entrance door in wood with or without window +2000 kr.
  • Roof extension by 50 cm +4000 kr.
  • Water tank above the heater +2000 kr.
  • Stainless steel firewood rack +3000 kr.
  • 80 cm terrace with 2 seats for a sauna +8000 kr.


It is also possible to order 5M or 6M saunas.

ThermaSauna 5M (5 meters) 59.000 kr

ThermaSauna 6M (6 meters) 67.000 kr 


Capacity: 2-6 persons.

Sauna room length: 200 cm

Relax room length: 170 cm

Diameter 228/237 cm.

Weight: approx 1300 kg

ThermaSauna 4M

  • Ordering Process

    We will gladly accept your order by email

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

  • Delivery Information

    Free delivery to southern part of Sweden and up to 500 km north from Stockholm. Please inquire for delivery price to remote areas.

    Delivery time 10-15 business days.

  • Warranty

    Seller provides a manufacturing warranty for production for 24 months after delivery. Seller does not provide warranty for wooden components. Heaters carry warranties from their respective manufacturers. Note! The commercial use of sauna has a 3 months warranty. 

    • The Warranty does not cover any errors that are typical for material, and does not concern wear due to normal use. 
    • The Warranty does not cover damage caused by misuse. Please read the User manual and Warranty properly and follow it. 
    • The Warranty does not cover corrosion or damage due to use of seawater or aggressive chemicals. 
    • The Warranty is not applied if you try to repair the product yourself.
    • Seller is not responsible for products complying with the requirements issued by local authorities.

    Contact the Seller about Warranty matters. Usually Seller replace false components within 30 days after proper announcement. False components must be provided to dealer in case of replacement. Buyer shall pay cost of transportation. Delivery of broken components cannot cost more than Buyer has paid for de-livery of whole sauna.