thanks Scally-Ho and jj4091 - believe it not both in-laws are paranoid about the noise this unit will make. They have both heard what they consider to be very loud ones before (mainly in hotel en-suites) and they have both complained about the noise they have made. The ones they have heard were in the en-suite and visible )which they also didn't like) and so it has taken quite a lot of re-assuring that we can get one on the opposite side of the wall (hidden from view) and therefore potentially much quieter than the ones they have used previously. I've come across them before and the noise doesn't particularly bother me, as many have said, it's only for a few seconds unless you're in the shower and if you're in the shower, you probably wouldn't be bothered about it anyway.
They are extremely concerned about the potential for the noise, so the offer of providing a removable (for maintenance) acoustically insulated box has also given them some re-assurance on that front. They are both getting on in age and are both worriers, who need the shower and additional toilet; there were other options to consider, but this is by far the best one for them, as long as we can get over the noise thing.
We have reinforced the thing about wee, poo and toilet paper only, as well as bleach and hanging toilet cleaners - time will tell on that front I guess, but we can only continue to reinforce.
The overheating thing because of lack of ventilation is a minor concern I think, as if it doesn't work, we can remove the box, or make the ventilation holes larger, but it would be useful to know if anyone else has experience of this.
Genuine thanks for all help and advice given here
They are extremely concerned about the potential for the noise, so the offer of providing a removable (for maintenance) acoustically insulated box has also given them some re-assurance on that front. They are both getting on in age and are both worriers, who need the shower and additional toilet; there were other options to consider, but this is by far the best one for them, as long as we can get over the noise thing.
We have reinforced the thing about wee, poo and toilet paper only, as well as bleach and hanging toilet cleaners - time will tell on that front I guess, but we can only continue to reinforce.
The overheating thing because of lack of ventilation is a minor concern I think, as if it doesn't work, we can remove the box, or make the ventilation holes larger, but it would be useful to know if anyone else has experience of this.
Genuine thanks for all help and advice given here

