Find out what could be behind your latest water heater malfunction.

Learn why your water heater isn't heating, plus how to fix other problems Fact checked by Emily Estep When a water heater isn't heating or has other problems, you may be able to fix it by yourself.

Q: Recently, I’ve noticed my hot water heater making an unusual noise that I’ve never heard before, and I’m not sure if it’s serious. Why is mywater heater noisy, and should I be worried about it? A: ...