Filter needed a wash, and it needs to dry before oiling. So a little airflow from an exhaust fan, little heat from an AC exhaust.
And in less than an hour, a dry filter. Way better than just letting it sit for a day or two, especially in humid places.
In theory it would pay for itself over time. You get better fuel economy, the filter is cleanable, so no got to replace.
Linky
The downside is, can be easier to hydrolock your engine in some cases.