Potential problems with BK's regarding cat temps..

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New Member
Aug 11, 2023
A dealer told me last week that some BK owners don't run the cat hot enough, and/or they fill the box up too much, then they're disappointed in the performance. So my question is, if the cat is engaged in the active zone, isn't it hot enough? I guess I should have asked her to clarify..(I don't own a stove yet, looking at options.)


Minister of Fire
Jun 5, 2015
Southeast CT
Take this with a grain of salt coming from someone who has only run non-cat stoves. I’d bet good money that the issue is dryness of the wood. At the end of the day, poor fuel accounts for most stove related issues.


Minister of Fire
Dec 28, 2006
Mt. Rainier Foothills, WA
You can't fill the box up too much. Some salesmen (or women) really have no idea what they're talking about.

As long as your cat meter is in the active range and stays there it is working properly. I prefer to keep things a bit warmer to keep the flue clean and minimize visible emissions. Also be sure to calibrate your cat meter per the owner's manual.
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Minister of Fire
Mar 7, 2012
The dealer is misinformed, or else you misunderstood what they were saying. As long as needle remains in the active region, you are good to go. Furthermore, you can't put "too much wood" in the box.

That said, many do not realize there is range on the thermostat knob below the stall point of any given setup. Maybe that's to what the dealer was referring.


Staff member
Nov 18, 2005
South Puget Sound, WA
Furthermore, you can't put "too much wood" in the box.
Often correct, but there is an exception in the case that the wood is too dry or the pieces of wood are small. That can overwhelm the cat.
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