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Price: 15440.00 GBP
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Steam & Oak Holvi 480 Side Entrance Thermowood Barrel Sauna (Gas, Electric or Wood-Fired) - Gas: Aurora 81, no safety pack
Steam & Oak Holvi 480 Side Thermowood Barrel Sauna The Holvi 480 Side turns the barrel round. Instead of a door in the end wall, the entrance is in the side of the barrel, in the middle, through a timber door with a double glazed hexagon window. Step in and you are in a small entrance between two rooms: a sauna about 1.8 metres long behind a tempered, tinted glass door on one side, and a changing and relaxation room of the same length on the other, with an opening double glazed window and benches either side. It is the layout to choose if the barrel will sit side on to the house or the view, or if you want a proper room to sit in between rounds. 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 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. 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. The Holvi 480 Side hot room is about 6.7m³ (our estimate from the plan), which behaves more like 12m³. The 9kW Cilindro covers that, and the 10.8kW Legend gives you headroom on an exposed site or in February. 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 lets the heater sit closer to the timber wall, and the rail stops anyone brushing the hot stones. If you have children, guests, or you rent the sauna out, choose this one. Without the safety pack. Heater and stone cage only. Talk to us first, because in a curved barrel the wall leans in above the heater and we will usually recommend the heat shield. FinSteam rate the 8.1kW heaters for barrels and other uninsulated rooms of up to about 8m³ of air, which is why gas is offered only where the hot room fits that range. Every gas option includes the heater, the Orbis stone cage, 40kg of pre washed sauna stones, a UK propane regulator and CE marked gas hose, and our fitting and commissioning. The gas variants are built with wooden louvre vents at the sizes FinSteam specify: a low intake beside the heater drawing air from outside, and a high exhaust in the opposite corner. You source a standard 13kg propane bottle locally, and a fixed gas connection needs a Gas Safe registered engineer. See the full gas heater range. Before you order: your electricity supply The electric heaters are not plug in appliances. For
Product information updated: 31 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!