When shopping for electric bathroom heater, I find most people want the following things 1) heat the bathroom as fast as possible, 2 get the room as hot as possible, because that is a common theme when it comes to heating your bathroom I recommend a fan force electric wall heater. they are smaller in size so they don’t’ take up much room when wall space in the bathroom can be at a premium and two fan will heat the room at a faster rate than a baseboard heater.
Where to start when shopping for a bathroom wall heater. # 1 Heater sizing (how big is the room you want to heat). The heater has to be sized so it can heat the room on the coldest night of the year. The quick rule of thumb is 10 watts per square feet for ceiling 8′ or lower or 1.25 watts per cubic foot for ceilings higher than 9 feet. That being said if you room is 50 to 140 square you would want a 1500 watt heater, if your room is 150-200 square feet you would want a heater that is 2,000 watts. The next thing is knowing your available voltage is right up there as one of the most important things to know and understand before you purchase an electric wall heater.