I purchased a pellet stove and was told by the stove store that it needs to be a certain distance from windows. The crew showed up for the install and told my husband he can place the stove close to windows with a fresh air valve. Is this true? Is it a good idea to put the stove in the back corner of our 2 story home with windows very close by on both sides? The other option in the room in more in the middle of the wall directly across from the door to the hall and further away from windows. The installers also told my husband that by getting the fresh air valve (no matter where the placement) that we would save $200 piping and it would look better. I am skeptical that something that costs less is actually better and why would the stove seller not mention this to me. Does anyone have any advice on the fresh air valve and placement? Thanks for your help. The installer is coming back on Friday 12/19 so I need to have a decision by then. Yikes.