 Buy the cheapest filters you can. And rule of thumb, if you don't know when to change them, just kind of gauge them every, like, two to three months. Yeah. Usually every three months, and I live down in the Dust Bowl in Penrose, every three months I'm changing mine. Every three months. Yeah, and here it's less. And let me tell you, he's got a beautiful place down in Penrose, and he's got an HVAC system that can keep that, like, five degrees above an ice cube. Yes, I can. Yeah.