With the exception of people like highbeam and Poindexter, I just don’t see much need to keep a spare, considering they last many years. I can see buying a new one once the original has some age on it and holding onto it until it seems necessary to change it out though.
I don’t even stock a spare. It’s not life or death since I have electric resistance back up heat that should work. The new cat from amazon can be on my porch in very short time. Plus the cats don’t fail like a light bulb, it’s quick but not that quick. You can run with a pretty worn out cat while you wait. Just run it more like a noncat and it will burn relatively clean.
If I lived in rural Alaska I would probably own a spare.
I did notice a 10-15% price increase since 2017 when I bought my last one.
Just got done blowing mine out with 50 psi compressed air just for good measure!


Smoke dragon OWB, all green wood, 24x7x365 (because it does his DHW too, so it also runs all summer).![[Hearth.com] 2019-20 Blaze King Performance Thread Part 1 (Everything BK) [Hearth.com] 2019-20 Blaze King Performance Thread Part 1 (Everything BK)](https://www.hearth.com/talk/data/attachments/253/253043-3f671548e5f16b5923dcebedc76e88f4.jpg?hash=Ol34ELuEcg)