I need to change the hot and cold flexible water pipes feeding my bathroom sink as they are rusty and ready to burst. The problem is there are no shutoff valves under
my sink so I'm wondering what the best course of action is.
I've read all the blogs I could find and found the information to be confusing as everyone had a different piece of advice. Some people say that shutting the main
valve at the meter and draining the hot/cold water pipes is sufficient as long as the water heater is lower than the lowest hot tap that will be drained (hard to say
for me as my water heater is on the ground floor), some people say that the water heater cold water feeding pipe valve should be shut off, some people say the water
heater should be turned off (gas, electricity) as a precaution, some people say the water heater might get siphoned out and therefore present a hazard, etc.
Can someone help me knowning that my bathroom is on the first floor and my water heater is on the ground floor? Also, I realize I need a better understanding of the theory so if someone knows where to find some good information please let me know.
Much appreciated. Wayne.