The alarm goes off, your feet hit the cold floor, and you dash for that nice, hot morning shower, only to find you have no water because the pipes have frozen.

With days of sub-zero temperatures in the forecast, it's time to review some preventive measure to make sure the water keeps flowing on icy mornings.

Lehighton plumber Michael Frable says he's had only one call for frozen pipes so far this winter.

"But I have a feeling we're going to be (getting more)," he says.

Frable advises people to button up their homes.

"Make sure there's no air getting into crawl spaces. A lot of people leave their vents open in crawl spaces. If they keep them closed, they stay warm enough so they don't freeze as long as there is heat upstairs," he says.

Frable also advises people to insulate the vents with foam or other material.

Also, leave the doors under kitchen sinks open so that warm air circulates around the pipes.

The American Red Cross advises letting faucets run at a trickle to prevent freezing. It also advises keeping garage doors closed if there are water lines in the garage, and to keep thermostats at the same temperature day and night to prevent pipes from freezing and bursting.