Can the hot water heating system be left on with the main water valve shut off while on vacation?

I was doing some bathroom remodeling and attempted to remove an old supply valve. It would not budge so I decided to cut the copper tubing underneath it and put on a new shutoff valve with a compression fitting. The problem is that water just kept coming out of that supply line. The main water...

I would like to know if I go away for two days and shut my main water shutoff valve can I leave my gas hot water tank on. I saw two answers To a similar question and one answer said you can leave it on and the other Said you had to shut it off. I am confused now as to whether I can leave the gas...

I was in my way to replace faucet for basin, but my local hot water shut off valve is not working. So now I have to shut off water supply from main line. Where would that be? I have old house and my water meter is out side. Also how to change shut off valve?

We had a leak, so we had the water line and sewage line from the house to the street replaced. Now we have no water in the shower. Some debris most have clogged up the line coming into the shower. All the other lines are fine. My Dad is somewhat of a handyman and wants to fix the problem...