Intermittent Hot Water Mystery
I have a bit of a mystery that I'd welcome advice on. Our master bath has a sink and separate shower and tub. We're on the 16th floor of a condo. Every so often we find we have no hot water in either the shower or tub in the mornings. Both shower and tub are fed off the same riser. It's happened 3 times now since January. The sink which is fed off of a separate riser still has hot water as does kitchen and other bathroom all of which are on different risers as well. By the time we return home in the evening the problem appears to have resolved itself.
Our building insists it's our faucets. Apparently no one else has reported a problem though our building has a history of plumbing and hot water issues. The bathroom was renovated last fall and we have all new fixtures in tub and shower but I'm having a hard time buying this. I can't believe both shower and tub faucets will malfunction at the same time and only on occasion. They insists there are no problems with the boilers which makes sense as there is hot water elsewhere in the suite. The only other thing I can say is that when I open up the tub faucet all the way to hot water only there appears to be water in the hot water line but it isn't hot.
Any one who can share some wisdom or shed some light here?