My apologies if this is the wrong forum. We would like to use a Greenwood (indoor) boiler to heat our new home. Does anyone have personal experiance with these? They are significantly heavier than similar output competition (Eko, KpPyro, HS Tarm etc.) which is due to a huge cast ceramic refractory. Supposedly it will store the excess heat internally instead of using external water tanks like Tarm recommends. Any comments appreciated. Total load load at -15 F is around 50k BTUs.