I have an old kindlewood fireplace insert with no liner, and a wonderwood circulator, no chimney liner, old brick chimney, trying to heat a 2400 sq ft farmhouse, 10 ft ceilings. I have to set my alarm every three hours to get up and feed the fires, and a ventless gas stove is always running to help out. Would I get better performance out of a new insert with a liner? The old kindlewood eats wood and seems to put off little heat, it is a flush mount with blower. Maybe I'd be better off with an outdoor boiler, but don't want to be a slave to that either, thanks