Goose

Ive had a meth kit installed for a few months now. Are there any preventive maintenance checks, cleanings, or replacements I should be aware of? Ive heard that the filters should be cleaned annually. I may not end up using the meth that much and i was wondering if meth kits are one of those things that dont like infrequent use? I dont want to be one of those horror stories that the kit fails on me.