Electric Sauna Heaters

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Electric Sauna Heaters — The Standard for Home & Commercial Saunas Electric sauna heaters are the most popular heating method for both residential and commercial saunas. They heat a bed of sauna rocks using electric elements, and you pour water over the hot rocks to create steam (löyly). We carry electric heaters from Harvia , HUUM , Saunum , Amerec , Narvi , Finlandia , and Scandia in sizes from 2kW to 36kW+. Every heater ships free with 0% APR financing. Not sure what size you need? Our Sauna Heater Sizing Calculator gives you the exact kW rating for your room in seconds. Or read on for a breakdown of how to choose the right electric heater for your sauna. How to Size an Electric Sauna Heater Electric sauna heaters are rated in kilowatts (kW), and the right size depends on your sauna room's cubic footage. The standard rule is 1 kW per 50 cubic feet of sauna space. A typical 4' × 6' × 7' home sauna (168 cu. ft.) needs roughly a 4.5kW heater, while a 6' × 8' × 7' room (336 cu. ft.) calls for a 6–8kW unit. Several factors push the requirement higher: glass doors and windows (add 25–50% more kW per square foot of glass), uninsulated or exposed stone/concrete walls, ceilings over 7 feet, and exterior wall exposure. Under-sizing means slow heat-up and trouble holding temperature; over-sizing wastes energy and can make the room uncomfortable. Use our Sauna Heater Sizing Calculator for a precise recommendation, or see our complete heater sizing guide and sizing chart for detailed calculations. Voltage & Electrical Requirements 120V (Plug-In) Heaters — These plug into a standard household outlet with no electrician needed. Limited to small saunas under about 150 cubic feet (typically 1–2 person). Good for compact builds where running a dedicated circuit isn't practical. See our complete 120V sauna heater guide . 240V Heaters — The standard for most residential saunas. Requires a dedicated circuit with the appropriate breaker size, installed by a licensed electricia