Water – Why does hot water only last a couple minutes

heaterwater

She has an electric water heather. There IS hot water in the tank. When we open a faucet it acts normal, gradually getting hot, but that only lasts for a couple of minutes, then it gets cold. A friend thinks there is a crossed pipe, but I can't get my head around that. Any ideas?

The tank is new, and she had the same problem with the old tank. I replaced the elements and thermostats on the old one before I replaced it, same result.

Best Answer

Regarding the crossed pipe, I think that your friend meant the hot pipe is connected to the cold port (and cold to hot) on the water heater. As Madura commented above, this question sounds similar to, "Why is my hot water running out quickly regardless of other household water usage?" Essentially, if the cold and hot are reversed at the tank, or if the dip tube has been lost, that could explain things. I'm not actually suggesting that this is your problem (it sounds like you know better than to connect the pipes backward); I just think that this could be what your friend meant. enter image description here