We use wood heat and have an insert in the fireplace. My DD is allergic to most of the wood we burn but the allergist made allergy drops specified to what she was allergic to and it doesn't bother her to be around wood heat anymore. The air does tend to get very dry faster than with other heat. I keep a big cast iron tea pot of water on top of the insert. I open the dishwasher and let the steam out instead of heat dry cycle. Moisture makes the air feel warmer. For anyone that has never used wood heat, do not burn pine logs in a stove or fireplace. Pine is used for kindling only.