The Oval Sauna is a large spacious building built with 28 and 42mm thick walls, perfect for using as a sauna. The multi-room layout allows for use of a changing space before entering the sauna itself. Please contact us for a quotation for adding in the heater. With our Sauna Heaters, please ensure you check which would be appropriate for your cabin based on your power consumption for our electrical heaters. Please Note: We are not able to fit these for you and would recommend you to contact a local electrician for installation of this element.