I've been debating with myself whether or not to post this but here goes. I have a twenty year old CDW Federal Airtight A Plus catalytic stove ( and yes I burn it every year) and I'm still using the original Cat. Some of you aren't going to believe me but it's true. I can still get the Cat thermometer to 1200 degrees easily. I haven't the slightest idea why it has lasted this long and I bought a replacement Cat a year ago (not installed yet) just in case. So, anyone else had one last like this or is this totally rare?