Got talking with a neighbor woodburner over the weekend, and I had mentioned my stoves were both catalytic. He said his is, as well... but that he had been running it in bypass mode for years. He is an otherwise-intelligent and handy guy, but had assumed the catalyst was solely for the benefit of the environment, not any benefit to his own wood usage or heat output. I mention this, because this has been the same response I've received from EVERY woodburner not a member of the hearth.com community, who has a catalytic wood stove. No wonder some manufacturers discontinued their catalytic stoves. I wonder if it would be different, if they were to re-introduce them today. Information is much more readily available, thanks to the internet and forums.