I just checked the specifications on the Harman Website. The P43 has a BTU range of 17,200 - 43,500, and the P68 has a range of 20,200 - 67,600. I guess I was wrong. I took the dealer's word for it. When I bought the stove he said it had a lower low, and of course a much higher high.It was my understanding that the minimum feed rate for idle on the P68, P61, P43, Accentra etc is .7lb/ hour. Do you have a link to information that states otherwise? Of course any of them will burn 0 pounds per hour is run in room temperature/ auto ignition mode which is the mode I always favor.
Thanks for any information you can share.