i have no hot water and there doesn't seem to be any water in the boiler?
BE SURE THE FIRE IN THE BOILER IS SHUT OFF! The water supply is not working, and the boiler can overheat, and explode. Check to see if someone turned off a valve upstream from the boiler. If not, you have a plugged supply line, and need a plumber to fix it. KrazyKyngeKorny (Krazy, not stupid)
turn off the boiler and call your supplier, oil or gas, and get emergency service right away.