The process of ventilating and exhausting the composting toilet also sends heat out of your composter. Toilet flush water also cools it. Evaporating leachate can cool the process, too, through evaporative cooling. So do not overdo the exhaust system. To minimize the heat loss, install a fan speed controller to keep the fan speed at… Continue Reading

Increasing temperature can increase the rate of processing – within certain limits.

You can also zone the location for your home heating system or hot water heater to provide heat to your composter. Think of it as heating a small room in your house. Fuel Used Heat (BTUs) Kilowatt hour of electricity 3,412 Liquid gallon propane 91,600 Gallon fuel oil 136,000 Square foot of sunshine/hour 429.2 Cord… Continue Reading

For solar heating, you have to have available solar energy, such as a clear, unobstructed south-by-southeast opening, not blocked by trees or other buildings. In most North American communities, 8-12 square feet of solar hot air collection area all year long will sufficiently warm a composter in a heated home. Contact your state solar energy… Continue Reading

Look for cheap or free heat, such as wasted heat. Some composters have convenient air intakes that can be connected to a warm air source, such as: An insulating fire proof box with an incandescent light bulb in it A heat exchanger connected to the exhaust system of a generator or the flue from a… Continue Reading