Heating options

Electric or wood — the decision that shapes everything

How a sauna is heated shapes far more than its warm-up. It decides whether you plan for a dedicated electrical circuit or a compliant chimney; whether the ritual is push-button convenience or the slower rhythm of tending a fire; and whether the sauna can stand off-grid at all. It is, after the sauna’s type, the most consequential choice you will make — which is why the archive catalogues profiles by heat source and states an approximate class for each.

Electric heating suits serviced backyards where a circuit is available: it warms on a timer with no fuel or ash, ideal for frequent, spontaneous use. Wood-burning delivers a deeper, traditional steam and needs no power at all, which is why every off-grid, woodland and lakeside profile is wood-fired. Some larger configurations are drawn dual-ready, keeping the fuel decision open.

Sizing and safety

Whichever you choose, sizing matters. The approximate kW class on each electric profile is derived from interior volume, glazing and insulation — see how heater classes are estimated — but final selection must follow the heater manufacturer and local electrical code. Wood profiles instead hinge on the stove’s clearances, a non-combustible hearth and correct chimney routing, per the stove manufacturer and local fire code. The electric vs wood-burning guide weighs the two in full.