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Price: 14490.00 GBP
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Steam & Oak Holvi 480 Thermowood Barrel Sauna (Gas, Electric or Wood-Fired) - Ø1.97m, 2.08m high / Gas: Botnia 81, no safety pack
Steam & Oak Holvi 480 Thermowood Barrel Sauna The Holvi 480 is a 4.8 metre barrel laid out in three spaces: a 60cm covered terrace at the door, a 1.5 metre changing room with its own benches, and a hot room about 2.7 metres long behind a tempered, tinted glass door. The changing room is what makes a barrel this size work through a British winter. You undress and cool down in a dry, sheltered room, the hot room stays hot because its door opens into the changing room rather than outdoors, and wet towels stay out of the heat. It comes in two widths, Ø1.97m or the taller Ø2.27m, both in 46mm thermowood staves with stainless steel bands. Every part of the layout can be changed. The barrel can be built without the changing room for a longer hot room, or without the terrace, and we will confirm the hot room size for any layout before you order. Which width? Ø1.97m. 2.08 metres high, a 6.83m³ hot room. Quicker to heat and a smaller heater does the job. Door 70 x 160cm. Ø2.27m. 2.38 metres high, a 9.19m³ hot room. More headroom on the upper bench, which is where the heat is, and a little more room to lie down. Door 70 x 180cm. Why the bands are stainless A barrel only stays round and tight because the bands keep the staves pressed together. Timber shrinks each time the sauna is heated and dries out, then swells again through a wet British winter, so the bands work constantly and need checking and re-tightening over the life of the sauna. Ordinary steel bands eventually rust, and rust runs down the timber and stains it. Stainless steel does not, and on the Holvi it is standard. What thermowood actually does Thermowood is timber that has been heat treated at around 200°C rather than chemically preserved. The process breaks down the sugars and resins that fungus feeds on and permanently reduces how much moisture the wood can reabsorb. The practical result outdoors is timber that moves less through wet British winters and resists rot without chemical treatment, in a structure that depends on staying tight. Choose your heater at checkout Shell only. The complete sauna, you source your own heater. Harvia Cilindro PC90 9kW. The classic Cilindro pillar with its tall stone column, 90kg of stones, controls built into the heater. Harvia rate it for rooms of 8 to 14m³. Harvia Cilindro PC90XW 9kW WiFi. The same heater with MyHarvia app control, so you can start it from the house. Supplied with the Harvia door sensor, which the electrical sauna standard requires before any heater can be started remotely. Most sellers leave that part off the quote. Harvia Cilindro PC110 10.8kW. The largest Cilindro, with a taller stone column for the extra output, controls built into the heater. Harvia Legend PO110XW 10.8kW WiFi. More output than the 9kW, with MyHarvia app control and the Harvia door sensor supplied. Harvia M3 wood fired. The classic Finnish log burning stove, rated by Harvia for rooms of 6 to 13m³. No electrics at all, no standing charge, and the ritual of building the fire. Supplied with a stainless steel chimney, and we confirm the chimney route with you before you order. Harvia M3 SL wood fired, through wall feed. The same stove, loaded through the wall from outside the hot room, so you feed the fire without letting the heat out or carrying logs past bathers. Harvia Pro 20 wood fired. A 24.1kW log burning stove, rated by Harvia for rooms of 10 to 30m³, with a large firebox and a big load of stones. No electrical supply needed. Supplied with a stainless steel chimney. Harvia Pro 20 SL wood fired, through wall feed. The same stove, loaded through the wall from outside the hot room. Sizing the heater. Harvia size heaters on the room volume, then add 50% for solid log walls and about 1.2m³ for every square metre of glass, because both soak up heat that an insulated panel would not. On the Ø1.97m Holvi 480 the hot room behaves like about 11m³, and on the Ø2.27m like about 14m³. The narrower barrel takes the 9kW Cilindro, with the 10.8kW Legend for headroom. The wider barrel is past what the 9kW, the M3 and gas are rated for, so it gets the 10.8kW heaters and the Pro 20 wood stove. The heater list at checkout only shows the heaters that suit the width you pick. We would rather sell you the right heater than the cheapest one. Tell us where the barrel is going and how you plan to use it, and we will confirm the choice with you before you order. Also available with gas Pick a gas option at checkout and the sauna ships gas ready: ventilation built for gas, plus a FinSteam gas heater package that runs on a standard UK propane bottle. No electrician, no chimney and no fire to tend. It heats in around 15 minutes from a dial. Botnia 81. Our standard 8.1kW gas heater. Everything you need to run the sauna. Aurora 81. The premium version of the same 8.1kW heater, with a better finish and detailing, oxygen depletion auto shut off and flame monitoring. With the safety pack. Adds the Njord heat shield and the Halo guard rail. The heat shield
Product information updated: 29 Oct 2026
Disclaimer: Product information, including title, description, and images, is sourced/provided by our affiliate partner: Steam & Oak.
Disclaimer: Some of the links on this website are affiliate links, meaning we may earn a commission if you click through and make a purchase. This comes at no additional cost to you.
By clicking the button above, you acknowledge that you will be redirected to a third-party website and agree to their terms and conditions.
Product information, including title, description, and images, is sourced/provided by our affiliate partner: Steam & Oak.
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Share this product with a friend:
Refer a friend and earn 0.05 CEC when they click the link, plus an additional 1.00 CEC if they register. Share this Product and boost your earnings together!