Protect your pipes.  Run water, even at a trickle, to help prevent your pipes from freezing. Open the kitchen and bathroom cabinet doors to allow warmer air to circulate around the plumbing. Be sure to move any harmful cleaners and household chemicals out of the reach of children. Keep the garage doors closed if there are water lines in the garage.

Better safe than sorry.  Keep the thermostat at the same temperature day and night. Your heating bill may be a little higher, but you could avoid a more costly repair job if your pipes freeze and burst.

Don't forget your furry friends.  Bring pets indoors. If they can't come inside, make sure they have enough shelter to keep them warm and that they can get 

Remember the three feet rule.  If you are using a space heater, place it on a level, hard surface and keep anything flammable at least three feet away - things such as paper, clothing, bedding, curtains or rugs.to unfrozen water.

Fireplace. If you are using a fireplace, use a glass or metal fire screen large enough to catch sparks and rolling logs.