Negative Positive
Title: Get ready for water damage
Review: After about a year and a half of use, the unit started leaking water out of the relief valve. No one noticed until we had significant water damage to the sink cabinet and underlying floor. Not sure what the problem is but this unit seems to have real problems with thermal expansion. I thought the whole point of these units is to eliminate the big tank. If you need a big expansion tank to deal with the water, what's the point?
Is the review positive or negative? 