Two days ago, my plumber had capped existing hot and cold waters lines in one of the shower and tub area as part of the remodel process. Since then I did not get hot water anywhere in the house. I rushed to change the water heater today and still no luck. Now I get some warm water in some bath and cold water. The funny part is that even after I shut down the cold water under sink, I get only cold water from hot water line. The water heater is working normally it seems.
Looks like one of these things is happening here
- Sediment build up – after installing the new heater today, I got muddy/gray water with lots of air in one of the bath
- Bad design, like hot and cold water mixing – I could be wrong as I never had this issue for the past 15 years living in the house
- Leak – We had bad weather in Dallas few weeks ago… so it might have cause but the issue is showing up after 3 weeks.
- My plumber did something silly two days ago. With my basic knowledge of plumbing, all he did was capping the lines to Tub, and installing a new valve for shower. Could he have cause some blockage?
I highly appreciate if you can shed some light.