I have been geting killed with propane costs and have decided to take the plunge and buy a stove. I need to heat my entire first floor which is 2100 sq ft. After researching online, it looks as though coal is hands down the cheapest. But for some reason, I can't get it through my thick head of having this in my family room. When I think of coal, I think of all of the old timers with emphysema or lung cancer. I know this is not the case, but I want to make sure it is 100% safe. Can someone ease my mind regarding the safety of using coal and also give me some opinions on whether to look at the other modalities (corn, pellets) also. Thanks.