{"product_id":"hiki-s-outdoor-sauna","title":"Hiki S: 2 to 3 Person Outdoor Sauna with Glass Door and Window","description":"\u003cp\u003eA two to three person outdoor sauna in 40mm thermo treated timber, 1,496mm wide and 2,019mm deep, with a flat roof, black flashing, a full height glass door under a covered deck and a full height window in the side wall. It is the design led cabin in the range, and the one the factory builds fastest: about six weeks at the moment, with a few held in stock.\u003c\/p\u003e\n\u003ch3\u003eWhy it is built without insulation\u003c\/h3\u003e\n\u003cp\u003eThe walls and roof are 40mm solid thermo treated timber and the floor and deck are 28mm. There is no insulation behind any of it, and that is the design rather than an economy. The mass of the timber is the insulation, which is how a solid timber sauna works: it takes longer to bring up than an insulated cabin and it sheds heat faster once the heater is off. What you get in return is a cabin that behaves like a sauna rather than like a heated room.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThermo treated timber throughout.\u003c\/strong\u003e Thermo treatment is kiln modification with heat and steam rather than chemicals; it raises dimensional stability and resistance to rot, which is what a timber cabin standing in a British garden through a wet January is actually up against. Left alone it weathers to silver grey; oiled or painted it holds its colour. The black details are painted at the factory. The cabin weighs about 600kg as a kit; add the heater, the stones and three adults and the loaded figure is nearer 900kg, which is the number to design the base around.\u003c\/p\u003e\n\u003ch3\u003eThe heater, and the only decision to make\u003c\/h3\u003e\n\u003cp\u003eThree heaters, all Harvia, all supplied with their stones. The room is 4.1 cubic metres, and because the walls are a single skin Harvia's sizing rule treats it as nearer six. The two electric heaters sit at the bottom of their published range for a room that size, which is the right end to be at in a cabin with no insulation: it comes up to temperature quickly and the thermostat does the rest.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHarvia Cilindro PC90, 9kW. Fitted as standard.\u003c\/strong\u003e A floor standing column rated for 8 to 14 cubic metres, holding 80kg of stones behind a steel mesh, with the timer and thermostat on the heater. It needs a dedicated circuit installed and certified by an electrician: 40 amps single phase in 10mm² cable, or 3 × 16A on three phase, and a room containing a sauna heater is a special location under Approved Document P, so the work is notifiable in England. That visit is a separate cost. We would rather tell you here than after you have ordered.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHarvia Cilindro PC90XW, 9kW, with Wi-Fi.\u003c\/strong\u003e The same column with 90kg of stones and a Xenio control panel that runs it from the MyHarvia app, so the cabin is hot when you walk out to it rather than when you remember to go and switch it on. The same dedicated circuit applies.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHarvia M3, wood burning.\u003c\/strong\u003e 16.5kW, rated for 6 to 13 cubic metres, 30kg of stones, with the chimney kit in the price. No supply, no electrician, no circuit, and no running cost tied to a unit rate. What it asks for instead is a flue through the roof, a basket of logs a session and a sweep twice a year.\u003c\/p\u003e","brand":"Tarnfell","offers":[{"title":"Harvia Cilindro PC90, 9kW electric","offer_id":55336258437462,"sku":"IM-HIKI-S-PC90","price":7640.0,"currency_code":"GBP","in_stock":true},{"title":"Harvia Cilindro PC90XW, 9kW electric with Wi-Fi","offer_id":55336258470230,"sku":"IM-HIKI-S-PC90XW","price":8340.0,"currency_code":"GBP","in_stock":true},{"title":"Harvia M3, wood burning","offer_id":55336258502998,"sku":"IM-HIKI-S-M3","price":8290.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/9720\/0982\/files\/im-hiki-s-garden-tarnfell.webp?v=1789202629","url":"https:\/\/tarnfell.com\/products\/hiki-s-outdoor-sauna","provider":"Tarnfell","version":"1.0","type":"link"}