So we noticed our water wasnt hot for more than 10-15 minutes. The water heater is from 1972. So I checked the elements one was 12.6 ohms the other was 13.4 so they checked good. So I removed the drain cover and noticed the bottom of the tank is rusted to pits. I have a home warranty, pay 75.00 they fix what needs to be done. So I called them. My question is will they try to just clean it out or should I demand replacement? When I opened the drain to see if it was badly clogged it spat and sputtere and the water was brown.... it did clear up after a minute or two.