Well I wanted to share my experience with my outside air kit that I have been using for a week now. I'm having great results! I mainly did it to make the stove run a little better in terms of maintaining secondary burn, but I didn't really see a whole lot of difference there, maybe a little.
But without question, the biggest difference is how much warmer the house is! I truly was not expecting a difference in this area. For example, last night was the coldest night so far, it got down to 7°, and I loaded it up around 11:00 last night, woke up at 8:00 and the LR was 72° and the bedroom was 67°. That's without the blower running! I could never have done that before without the blower on. Temps that low used to bring this stove to it's knees in overnight burns; usually before the temps were about 67° in LR and 62° BR when I woke up. My glass seems to be staying cleaner as well. I'm very impressed with the results so far.
But without question, the biggest difference is how much warmer the house is! I truly was not expecting a difference in this area. For example, last night was the coldest night so far, it got down to 7°, and I loaded it up around 11:00 last night, woke up at 8:00 and the LR was 72° and the bedroom was 67°. That's without the blower running! I could never have done that before without the blower on. Temps that low used to bring this stove to it's knees in overnight burns; usually before the temps were about 67° in LR and 62° BR when I woke up. My glass seems to be staying cleaner as well. I'm very impressed with the results so far.