Wondering if someone can confirm my suspicions about what's going on. My Stove: My Enviro Meridian was installed in the fall of 08. Cleaned and maintained on a regular schedule. My Settings previously: It has 5 heat level settings (1 being the lowest and 5 being the highest). When it's around 30, having it on 1 means 70 degrees in my house. When it dips down into the teens and high single digits I go up to 2. When it's negative temps I sometimes kick it up to 3 - but rarely. I have never needed to put it to 4 or to (an unthinkable) 5. My Settings this year: When it's between 25 and 30 outside and I have it on 3 to keep it above 70 in the house. Nothing has changed with my house and still using Spruce Pointe as always. My Suspicions: I have had issues with the crappy install that was done - using duravent pipe and a direct-vent - no internal rise - and also leaked. I also used to have no air intake connected and it would result in my house filling with smoke when the power would go out. That all changed a few months ago when I paid to have a proper internal rise and air intake installed. The power has gone out recently and no smell or smoke in the house to speak of - amazing what happens when it's installed the way the book says it should be. However, I'm wondering if the change in heat level adjustment needed is due to the air intake that is now allowing cold air into the stove - and if I'm running at 3 (which uses a lot more pellets) when I used to run at 1…crap. What do you think?