We have an almost identical one of these over our bath altho I have no idea who its made by or how old it is but I guess its around 3-4yrs old.
http://www.ebay.co.uk/itm/360412938627?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
The problem seems to be the lack of hot water, its all...