Hot water problem. Help!

We recently bought an apt, top two floors of a Brownstone and noticed last night that the hot water in the bathroom runs hot for 10 seconds or so then runs cold. If I try it again a few minutes later the same thing happens. Hot, then cold. Had to do this a dozen times last night just to have a bath!

The previous owners had a brand new boiler installed recently, but I believe the hot water heater is around 10 years old.

Any advice much appreciated :)

Thanks!

P.S If the problem is the HW heater, how much does it cost to replace it?

By kissiffer4 |