We have a centrally located classic cast iron timberline from the mid 70's that my dad pulled out of his house years ago. Our house is a drafty 3500SF 1930's stone carriage house that we've renovated. The stove does a really nice job of heating just about all of it except for the peripheral areas, which isn't a big deal because they're mostly bedroom areas and we like to keep the temps around 65. Since we installed it a few years back our propane use (we have a high efficiency buderus boiler that burns fuel on cold days like there's no tomorrow) has dropped by close to 80%! And while we're thrilled about the savings we've been wanting to upgrade to a modern stove for better efficiency, longer burn times, and safety (wife, 3 kids, 2 dogs, and 2 cats in the house). To give you an idea, right now we're reloading every 4-5 hours and we keep the knuckles and damper fully closed to keep the house at 65-70 on cold days (0* - 20*). The chimney is a straight run of all new 8" class a duravent with black stove pipe from the stove to the support. The draft is excellent. Here's the problem. I can't figure out if any of the modern EPA stoves will throw off the heat that our timberline does. I went to our local distributor over the weekend to see some newer models and my first impression was that these stoves were too small and I couldn't imagine how they'd even come close to doing what the timberline does. I saw the Jotul F55, Enerzone 3.4, and the PE Alderlea T6. All were very nicely made and reasonably priced but again smallish looking. Has anyone every made the switch from classic to modern EPA approved? Can you give me your thoughts on whether you're happy from a heat output standpoint? Are there other models I should be looking at might handle our house better? Thanks in advance for your insights.