The down time has varied. For the refurbishment under warranty, the first try was about 10 days, the second try after me complaining was several weeks (I was wondering if they were waiting 'til the original 3-year warranty expired!). For replacements before the end-of-warranty ones, it took as little as 5 days and usually no longer than 10 days - intervening weekends and the fact that the audi only infrequently had an appointment on the day she got the aids back lengthened the usual turnaround time a bit. The ReSound replacement service has been excellent except for the battery longevity bit at the end. I repeated requested an analysis of what was wrong with any aid sent in but never got any replies back. Since before the end-of-warranty replacement, I was only returning one aid (usually the left one), I still had my other HA to use so I usually never had “complete” downtime - my hearing is pretty decent without my aids except for high-pitched consonants and important little things like arming/disarming alerts from our house security panels (obviously the designer didn’t think of hearing-impaired users with typical age-related ski slope loss!).
I have decided that a further good use of the Jodi-Vac is actually to vacuum the ReSound-supplied brush that I am now using exclusively to clean the microphone openings. I’d be interested in anyone else’s tips on how, if ever, they clean their HA brush.