Anyone been using one of these? I like that the sensor is supposed to track the pressure drop as the filter ages. I installed one two weeks ago and can say that it is the best built filter I have ever seen. It is a 1" thick pre-filter for the 5" unit in the attic. It will be interesting to see if it goes longer than the three months I usually change them at.

https://www.filtrete.com/3M/en_US/fi...er-technology/

 

my olfactory sensor lets me know when its time to change the filter in the attic.
My nose will get plugged up and sometimes I wont be able to breath, letting me know it's time to change. I have pets and in the summer months where the A/C runs constantly...I'll have to change out the filter once a month.
in the fall and winter time, I can let it go for three months before my nose starts to tickle.

 

I have a wife to tell me when to change the filters. I don't need a filter to tell my wife to tell me change the filter.

 

I write the date on my filter to remind me when I put it in..

 

I change mine when Nest says so. I think it guesses.

 

create a phone reminder with siri/android

 

Filter is one month old. It looks like I will get four month filter life.

 

Still looks like it may last 4 months before asking to be replaced. The circulation fan has been running 24/7 since 9/9 since we are only about 10 miles from the Bobcat fire area.

 

It hit zero today after 4 months, 2 days.

 

How much is one of these?

 

Project farm tested some air filters.

 

I love project farm! I've definitely bought a a few things after watching his tests

 

This is the filter for our Lennox system. Once a year replacement. It's yuuuuggggeee

 

I have the same one here, mine still says change every 6 months.