Best way to descale an older Dyson cordless vacuum?

Check your manual first because older Dyson models sometimes have different filter layouts and you don't want to crack anything by forcing it apart. Most of the time you're just running the filters under lukewarm water (not hot, which can warp them) and letting them air dry completely before reinstalling - skip the vacuum entirely while they dry or you'll damage the motor. If there's mineral buildup inside the tank itself, a vinegar soak works but honestly it's overkill for most people; just the filter rinse handles 90% of the gunk.