Berlin wrote:Mixing bit w/ anthracite's fine, but it ends up leaving you with the worst of both. Higher ash, lower btu, and higher cost than straight bituminous; more caking tendency (if using high coke button bit), smoke production, steeper learning curve than (depending on the coal) than anthracite. Definitely can't mix both if using a hopper.
If the stove is appropriate, there's nothing wrong with using a GOOD bituminous coal, many people really like it; if you have very close neighbors and it's high vol, you're going to have some smoke and smell downwind that others (living close by) may not like with a hand-fired stove using bituminous coal.
I know about the issue with a hopper ... the bit will burn up up up into the hopper and then major issues happen when you open the hopper .... any bit=no hopper.
My Hitzer 503 can burn both ... but they tell you to remove the hopper if burning bit.