Preventing & Thawing Frozen Pipes

Make sure that heat is getting to your patio or balcony closet. There is a vent from your heating system in the closet – make sure it is open.
When the weather is very cold outside, let the cold water drip from the faucet served by exposed pipes. Running water through the pipe – even at a trickle – helps prevent pipes from freezing.
Keep the thermostat set to the same temperature both during the day and at night. By temporarily suspending the use of lower nighttime temperatures, you may incur a higher heating bill, but you can prevent a much more costly repair job if pipes freeze and burst.
Never turn off the heat when you leave home during the winter. Instead, set the temperature to at least 55 degrees F (higher if you’ve had problems in the past or live in an area of extreme cold). If you have multiple heat zones, be sure to adjust all thermostats appropriately.

If you turn on a faucet and only a trickle comes out, suspect a frozen pipe. Likely places for frozen pipes include against exterior walls or where your water service enters your home through the foundation.
Keep the faucet open. As you treat the frozen pipe and the frozen area begins to melt, water will begin to flow through the frozen area. Running water through the pipe will help melt ice in the pipe.
Apply heat to the section of pipe using an electric heating pad wrapped around the pipe, an electric hair dryer, a portable space heater (kept away from flammable materials), or by wrapping pipes with towels soaked in hot water. Do not use a blowtorch, kerosene or propane heater, charcoal stove, or other open flame device.
Apply heat until full water pressure is restored. If you are unable to locate the frozen area, if the frozen area is not accessible, or if you can not thaw the pipe, call a licensed plumber.
Check all other faucets in your home to find out if you have additional frozen pipes. If one pipe freezes, others may freeze, too.

Insulate Exposed Piping- If you have any exposed water or drain piping at all in uninsulated spaces such as in a crawlspace, attic, outside walls, etc., make sure to insulate them with foam insulation at a minimum. Ideally you should wrap them with electrical heating tape first, then insulate them.
Insulate your hot water tank with an insulating blanket you can buy at the hardware store.
Insulate exterior outlets and switch plates with inexpensive foam sealing gasket.
Add a door sweep to each exterior door.