Sauna Heaters

The right size, or power, of a heater is determined by your sauna's room volume in cubic feet (Length x Width x Height). The general rule is to have about 1kW of power for every 45-50 cubic feet of space. You must also account for any glass doors, windows, or uninsulated stone/tile walls, as these will require more power.

For a precise recommendation, find and use the official Sauna Heater Sizing Calculator tool on our website.

Think of the power needed for an electric clothes dryer or an oven—it's very similar. While specifications vary by model, most electric sauna heaters in the United States require a dedicated 240V circuit. The amperage needed (e.g., 30A, 40A, 50A) depends directly on the heater's kW power.

Disclaimer: This is not a standard 120V plug-in appliance. All wiring must be performed by a licensed US electrician to ensure safety and compliance with the National Electrical Code (NEC) and all local regulations. For a detailed breakdown, please find our complete guide to sauna electrical requirements in the Learn section of our site.

It depends on the model. Some heaters feature simple, reliable built-in mechanical controls located directly on the unit. Most modern heaters use a separate, wall-mounted digital controller for the convenience of operating the sauna from the outside and for advanced features like pre-scheduling and WiFi connectivity. You can find individual smart controllers in our Accessories section, or for a guaranteed all-in-one solution, explore our pre-configured Sauna Heater Packages.