I have an englander 25-pdv and I have none of the stuff some of you have. First I do not have a slide or cover to control the feed of pellets into the top hopper to the top auger. It is wide open like 4 to 5 inch opening. I do not have any type of switch on the Hopper cover to stop the top auger it just runs like every 5 or what ever the stove calls for. My stove Doesn't really throw alot of heat, I mean on a 20-25 degree night on 8-9 is making the 15 X16X 9 feet living room only like 70-75 and the house is new. This being said I go through a bag of Premier Pellets every 12-14 hours which from what I have read is ALOT. I also go thorough a bag of Lighnitics in 14-15 hours. The stove was made in 1998 and I just bought it I replaced the Combustion Motor because one night it just stopped. Which filled the house with smoke which came out of the two little holes under the Lip right under the front door. Qucik specs on venting... Straight out the back 4 feet to a endcap that blows the exhust down. I do not have anything hooked up to the fresh air intake but have never had a problem with the Neg Pressure thing.. Maybe I do "talk to me Goose"... Thanks