Electric sauna heaters are a popular, low-maintenance choice for residential saunas. They heat most sauna rooms in about an hour. Heater size is based on room size and measured in kilowatts (KW), while most residential installations use 240V power. For the best steam and longer heater life, choose models with solid stainless steel rock trays instead of exposed heating elements. Modern electric heaters also offer features like rock towers, aromatherapy trays, and water reservoirs.

Gas sauna heaters are an efficient, high-performance option that provide a softer, more comfortable heat than electric models. Available in both propane and natural gas configurations, they're ideal for residential, commercial, remote, and mobile saunas. Propane heaters connect to exterior tanks, while natural gas models tie into existing gas lines. Most gas sauna heaters heat a room in 30–60 minutes and should be professionally installed by an HVAC technician for safe operation.

Wood burning sauna heaters are a favorite among sauna traditionalists, delivering a soft, natural heat and an authentic sauna experience. The ritual of preparing the fire and the aroma of burning wood add to the atmosphere that has been enjoyed for generations. These heaters typically take longer to warm the sauna and require proper chimney ventilation and a protective floor surface for safety. Wood burning stoves are available in both interior and exterior loading models.