Good day, I'll tell you, I have a water heater in the kitchen, when I open the water to wash the dishes, the water is cut, it makes a strange noise, the water comes out suddenly and wet the entire kitchen as it splashes the water with the pothole, and then begins to flow normally; when I take a bath, the hot water comes out, then cold, then hot and colder than anything else as if someone opened the water to me, what catches my attention is that when I am NOT using the water heater, it turns on suddenly as if someone opened the hot water and then it goes down as if they closed the water, it happens very often, like when someone was using it on the water ticket I get $ 400 or $ 500 or $ 600 to pay, I live in capital in a 2 room apartment CHICO and I'm late for my house Is it possible that a water heater is hooked to another apartment ???? because the terrace is upstairs, but there are people living in a apartment, I don't want to think badly, but nobody gives me an answer. Thank you in advance for the time you took to read my question. Regards.