Ever since the show your ash thread i have been keeping an eye on the color of my ash learning that the dark ash im getting now is a sign that im not getting everything i can out of the pellet. Temps have only been dropping into the 20s at night and the upper 40s during the day. During the day it is just on a maintenance burn and really only works a little bit at night. I thought i would try something new last night and turn the harman thermostat up a few degrees and see what happens. I checked out the ash this morning and the color is a little more gray like its ideally supposed to look like. With that being said my upstairs was 74 degrees so i dont want to lean only the stove any more for a more effecient burn because the house will be 80 degrees so is there a way to burn more effeciently at lower heat levels. My house is only 1800 square feet, built in 1994 and ive replaced all the windows with new Pellas, and blew an additional 10 inches of atticat for a total of 14 inches of insulation. Is this P61 too big or wait till the dead of winter and be glad i got it rather that a p38