Where is a good place to start reading about inserts? I assume an insert is a lot less expensive than installing a wood burning stove? The fireplace that i would want to put the insert in is downstairs, but would love to put a wood burning stove upstairs (where we spend most time). I know nothing about this stuff. Do all inserts have blowers? This doesn't seem very economical to me. If the blower requires electricity, i don't want to start feeding that bill. Anyway, anyone have any tips on where to start learning about this stuff?