It shouldn't require much if any
service...parts--which should rarely be needed--are available from Thetford...not sure where else.
Tecma toilets are typically a bit more
power and
water hungry, and a bit noisier, than most others. I have met any Nano owners yet, so I don't know whether that also applies to it. But I'd read the specs very carefully before
buying it if
power, and
holding tank capacity are likely to be an issue.
--Peggie