[bimmer456]

Originally Posted by ScottSinger

I not too picky, 3M is a good name, I don’t like going three months so I’m constantly checking the element. If it looks too gray I change it.

Have u seen these https://m.lennoxpros.com/pco3s-20-16...kaAi7eEALw_wcB

Yeah I changed mine after 2 months. I have the reminders set up in my Nest app but I feel like it's too long between reminders even though it takes into account usage.