Hi, I have recently lost hot water in the kitchen sink. The faucet is a two-knob design, one knob for cold water, one knob for hot water. The cold water pressure is fine. Also, hot water in the rest of the house seems fine. It's a one story house, and the hot water heater is in good shape.

I don't know if it's related, but in one bathroom, the toilet occasionaly runs like the flapper valve may not be getting a good seal. After it finishes running, I can hear the pipes in the cieling "clang" together, if that makes any sense. That noise has also recently gotten worse.

I will likely be calling a professional out, but I was just wondering if there was anything I could check first. My biggest fear is that a line burst somewhere and I've had water running continuously for a last couple of days. A four or five-figure water bill is not what I need right now!

Thanks for any advice.