Philip/Sue... thanks for the replies, yes I'm aware of the commercial camping units...I was hoping to find one of the small stainless units that had not held insecticide/herbicide on the used market...I haven't had the need since 2005...my hot water tank held for about 2 days (electricity was off for about 6 days), and by that time the Sun had broken through enough to heat the solar unit, and provide for a shower in the afternoons... one of those things that is on the list, but since I retired not critical anymore