Needed to do the weekly deep clean and its cold out. Set the stove to high and the thermostat to 77. Figured it would get a little cold in the house by the time I had let it cool down and got it cleaned. Something weird happened on shut down and there were still a few pellets smouldering in the pot after the stove went thru it cool/down shut/down cycle. Its never done that before but I usually never run it on high. Could have been because it need to be cleaned. So there was a smoke smell coming up thru the hopper so I unplugged it and plugged it back in so it would go thru the power failure purge cycle. While I was doing this I put my hand on the aluminum OAK hose and it was very cold. Then the light bulb went on. Its about 20 degrees out so if I run it thru the purge cycle a couple of times the stove would be cold enough to clean it. So after 3 cycles it was cold enough that I could touch everything with my bare hand. Burn pot, ash pan and ash was cool to touch. So I cleaned the bin and pot vacuumed out the combustion fan compartment, blew compressed air on the blades cleaned the glass and was done in an hour. Shop vac is outside just as a safety precaution and the house hasn't cooled of enough to bring it back on yet. Another advantage to having the OAK.