We're are leaving home soon for a one week vacation. I plan to shut off the main water supply and gas water heater. (We recently had a leak in the pipe leading to the water heater. So I want to be safe).
Somebody also suggested that I open a hot and cold water faucet (after shutting things off) and drain to release some pressuse in the system . But I was also told that do this way it may create some vacuum in the pipe system that might damage the pipes.
My questions:
1) Is it okay to just turn off the water supply and water heater without releasing the pressure? 2) If not, is the vacuum a concern?I searched the group and couldn't find a complete answer. Help will be appreciated.