An electric sauna is the most common kind sold today, because the electric heater is controllable, heats on a timer and needs no flue, unlike a wood-burning stove. The trade-off is electrical: any heater over about 6 kilowatts usually needs a dedicated 240-volt circuit, which means an electrician, and that wiring is the part of an electric sauna most often left out of the sticker price.
Why electric is the default
An electric sauna heater reaches temperature on a schedule, holds it precisely, and switches off on a timer, which makes it far more convenient than a wood-burning stove for most home users. There is no flue to install, no wood to store and keep dry, and no waiting for the fire to build. Modern controls range from a simple dial to a wifi timer you set from your phone. For an indoor sauna an electric heater is usually the only practical choice, and for an outdoor one it is the low-friction default unless you specifically want the ritual of wood.
The wiring is the real cost
The catch with an electric sauna is the circuit. A small heater may run on a lighter supply, but any heater above roughly 6 kilowatts, which covers most cabins larger than a compact two-person unit, needs a dedicated 240-volt circuit run from your panel to the sauna by an electrician. Depending on the distance and your panel's spare capacity, that job can rival the cost of stepping up a tier on the sauna itself, and it is the single most common surprise for a first-time buyer. Confirm what supply you have and price the electrical work before you choose the heater, not after the crate arrives.
Sizing the heater to the cabin
An electric heater is rated in kilowatts and must match the cabin's internal volume, with extra capacity for glass and any uninsulated surface, both of which lose heat. Undersize it and the sauna never reaches the top of its range; oversize it and you have paid for power and a heavier circuit you did not need. Every reputable retailer publishes a sizing chart, and matching the heater to the room from that chart is the most important single decision in specifying an electric sauna. The heater is a four-figure line in its own right on larger cabins.
Questions people ask about electric sauna
Does an electric sauna need special wiring?
Usually. A heater above about 6 kilowatts needs a dedicated 240-volt circuit installed by an electrician, which covers most cabins beyond a compact two-person unit. Small heaters and many infrared cabins run on a lighter supply.
Is an electric sauna cheaper to run than wood?
They are different rather than simply cheaper: electric costs are the electricity to reach and hold temperature, while wood costs are the fuel and your time. Electric is far more convenient and controllable, which is why it is the default.
How big an electric sauna heater do I need?
Match the heater's kilowatt output to the cabin's internal volume using the retailer's sizing chart, adding capacity for glass and uninsulated walls. Undersizing leaves the sauna cool; oversizing wastes power and may need a heavier circuit.