Have Buck Stove 20ZC, Want bigger

[walexa07]

I purchased a home 3 years ago and it has a Buck 20ZC, which stands for zero clearance. The house is 2200 heated and this stove can't keep up. The buck website says 1200-1800 HSF. I want something larger.......anyone have any ideas of other stoves that will fit?

I don't have a full brick fireplace........just this built-in zc unit.

Thanks

Waylan