2 times in the last 6 months, my parents tub has lost a foot of water overnight. enough water that the fail safe trips such that the pumps stop pumping.

they had a tech come out but they couldn't figure out what the problem was.

i don't think that it is a leak cause it isn't consistent but I don't know enough to determine what might have happened. I tried doing some of the leak checking stuff but the first time it happened in winter and the second time it happened after it rained.

any ideas?

thanks in advance.

Do you have a Brand, Year and Serial Number?

2001
coast spa
sl37

If it's NOT a leak there's really only two possibilities. 1. You live in the antarctic and left the cover off (-100 degree temps might allow for that much evaporation). 2. The worlds largest herd of migratory raccoons came by and were thirsty. There might be a third possibility, but I think it rather remote........ aliens were flying by, were thirsty, and you have the only water for miles around... "Beam me up, some water Scotty". I'm thinking though, there's probably a better chance you have a leak of some type " title="Rolling Eyes" />

we are in winnipeg.....it could get to antarctic temperatures but I didn't know that you'd get evap from cold temps?

what kind of leak would be so in consistent? wouldn't it happen everytime we fill it up?

I'm near San Francisco and on (what we would consider) a cold night could lose easily 4" to evaporation, IF the cover's left off.

Hot water, cold air, lots of evaporation.

interesting....while my parents are in winnipeg, canada i am actually living in mountain view

any other ideas?