What a PAIN! Do not buy one of these models. I purchased one around September before the EPA approved this model and was told there would be very little ash left over and that I had enough wood to last 3 years stored up if I used this model. After waiting about two months for the EPA to approve it, I helped the dealer finish installing it around the 1st of December. Very poor results immediately. The blower holes keep getting blocked because they're located at the BOTTOM of the unit where you put the wood. Does anyone else see a problem here? You have to keep all the holes open for it to work "efficiently" but how do you fill it with wood and NOT cover the holes? Does CB offer a money back guarantee? Any other 750 suckers out there?