 Which one of us says the thing about 90-day filters? Do you want to do it or do you want me to do it? Go ahead. All right, so never, ever believe the 90-day filter. It's a myth. One-inch filters are not good for any longer than 45 days. Yep, should replace them every 30 to 45 days. So if it says 90-day filter, don't believe it. Yeah, that's an up to, and that means if you're not planning on running your air conditioning system for a month and a half,