I have a late 80's VC Federal catalytic convection heater. Bought it used and it needed a combustor. Decided to try it without one as it is the extra large one and our home is small. Been running it that way ever since. How much hotter will it get with one and any suggestions on a reputable online source to get one and other parts ( also needs the baffle that anchors directly under the combustor) Also, (this may be a dumb question) does the combustor increase burn time at all or significantly increase pipe temp? Have been seriously considering replacing it with a Hearthstone Heritage. Any thoughts appreciated. Thankx