we ran our "new" rmh for first time today. it's 18f. outside and 69.5 indoors. we ran it "half speed" all day today w/ a high of 24f. took us about a month to build it. 8 inch like erica's and used bonny video. thanks to erica! and thanks to allen and thomas today for great info and advice. !! obviously we are more than pleased. we studied info for a year off and on. have a wood floor and basement, so took extra effort. we used hawthorne clay in 50# bags and got really nice fire bricks for dollar each from a man quitting his pottery business. we're both about 70. pretty hard work, but more than worth it. if i cut and split even half of what i did i'll be overjoyed. we sold our englander stove for 400 and were w/o it for the month but we do have a small forced air furnace on propane which we HATE to use. we appreciate this forum and all the great input, to say the least. allen is great and the other experts also. we're really not done with stove yet as we're waiting for it to be "fully" dry before we apply the earth plaster finish. still researching how to do the plaster, but there are horses and cows "next" door.