Does dripping faucet prevent frozen pipes?

Furthermore, why does dripping faucet prevent frozen pipes?

The real reason a dripping faucet can help prevent pipes from bursting is that the constant drip relieves pressure that is building up in the pipes between the ice blockage and the faucet, and helps to prevent them from bursting when the pipes begin to thaw.

Similarly, how cold does it have to be in your house for the pipes to freeze? 20 degrees

Just so, do you leave hot or cold water dripping to keep pipes from freezing?

A trickle of hot and cold water might be all it takes to keep your pipes from freezing. Let warm water drip overnight, preferably from a faucet on an outside wall. Keep your thermostat set at the same temperature during both day and night.

How do I make sure my pipes don't freeze?

Here's how to make sure pipes don't freeze:

1. Turn up the heat.
2. Set up fans to blow heat into cold rooms.
3. Open vanity or cabinet doors so warm air can reach the pipes under sinks.
4. If you have exposed pipes inside closets or pantries, leave doors open.
5. Disconnect garden hoses from outdoor faucets.