Thermory Saunas
Thermory has 3 saunas on Sauna Critic, priced from $6,170 to $10,500. The least expensive Thermory model here is the Thermory Barrel Sauna No. 52 DIY Kit at $6,170, and the lineup below runs cheapest first.
The No. 52 is Thermory's attainable barrel — $6,170 for a four-person kit with panoramic window, glass front door, flooring, exterior trim, and the rain jacket included, everything pre-cut so build day involves zero sawing. You're getting the same chemical-free, modified-to-the-core Nordic spruce as the flagship No. 60 in a tighter 154-cubic-foot package, which has a sneaky advantage sauna owners appreciates: less volume means a modest 6kW heater gets it properly hot, fast. The trade-offs are inherent to the size and format — four people fit but two are comfortable, the 75.5" height means taller users duck, and it ships heaterless, so budget another $1,000-$1,500 with wiring. Owners rate the kit engineering highly; the recurring gripes are curbside freight logistics and hunting for warranty terms. Against domestic cedar barrels at similar money, the wood quality is the argument.
The No. 60 is the barrel for people who find normal barrels cramped: a 7'3" interior diameter you can stand tall in, 24"-deep thermo-aspen benches, a panoramic rear window, front porch, and Thermory's signature to-the-core thermal modification, at $9,900 plus $599 freight (heater extra). The brushed 'Ignite' dark finish is the same wood architects spec for cladding, and the 1.57" staves hold heat noticeably better than thinner budget barrels — though sauna owners will remind you no barrel is truly insulated. Owners consistently describe the kit precision as a level above domestic barrels; the flip side is a 2,000-lb delivery, a heater budget you must add ($1,200-$3,300 depending on package), and warranty details that live in an email thread with Thermory USA rather than on the product page. A rain jacket cover ships included — telling, and useful.
Estonia's Thermory invented much of the thermally modified wood category, and the Mod4 is its non-barrel flagship — a black brushed-spruce cube with an L-shaped social bench for four to six, $10,500 plus $599 freight, sited indoors or out. The thermal modification is the real story: chemical-free heat treatment to the core makes every board rot-resistant and dimensionally stable, which is why sauna owners' wood nerds respect Thermory even while rolling their eyes at designer pricing. The L-bench layout is genuinely social — people face each other instead of lining a wall. Buyer notes: the cabin ships heaterless, so budget $1,000-$3,000 more for a Harvia or HUUM and its 240V circuit; the 1,800-lb kit needs a real crew and a flat pad; and warranty terms require an email to Thermory USA rather than a product-page scroll.