Do not assume that nonelectric cottage composting toilets perform as well as their electrically heated and power-ventilated big brothers. You will be disappointed, if you think you can use a nonelectric cottage composting toilet full-time, year-round for a family of three and more. It won’t work without some kind of supplementary system, such as urine diversion, leachate drainage, and passive heat.

Non Electric systems cannot actively evaporate leachate with only ambient air temperatures and passive chimney effect. Power venting is always recommended, even if it is from a 12V battery source. Make sure exhaust pipes are at least 4 in. in diameter with no bends or obstructions, and make sure ventilation is as direct as possible.