Keyman, I am very satisfied with the corn heat. My stove produces about a 3lb coffee can full of ashes a week and also I have a clinker stove instead of a stirrer stove so out of a ton of corn I end up with about a coal hod full of clinker(fused minerals from the corn) that once they are removed from the stove on a daily basis they draw moisture from the air and become very crumbly they turn into a fine powder. The downside with burning corn is the stove needs to have the heat exchanger tube brushed out once every two weeks and the ashes vacuumed from the fire box every week and with the clinker type stove removing the clinker every 12-24 hrs depending on the amount of corn burned. Plus when the weather is cold like it is now I can not go 24 hrs on a hopper of corn and my stove has a large hopper (115 lbs) I can also burn other grains in my stove but the only other grain that I have burned is wheat. But you can also burn rye, barley, and oats but from what I hear oats give you a lot more ash. I have also burned some old dog food and it burned well but did not produce the amount of heat that corn does. Most stoves run in the 30k-40k btu input range but I have one of the larger stoves out there and it is 60k btu input. If you want a higher btu then you have to step up to a furnace or a boiler. As of now I have the 60k btu corn stove, a wood burning fireplace insert, a 110k btu gas furnace and a 36k btu ventless gas heater in the basement so I thought a coal stove would be a nice addition to my collection. My wife tells me I have a stove fetish. But I tell her that I like the multi-fuel capability. I hope this answered some of your questions.