Faucet covers work by trapping heat that naturally radiates through the interior pipes to the outdoor spigot. The insulated cover prevents this radiated heat from escaping and therefore prevents water in the faucet from freezing, expanding, and rupturing the spigot.

Do I need to cover my faucets?

In general, outdoor faucet covers work pretty well at their main job: preventing water faucets and pipes and from freezing in the winter. Because the faucet is exposed to outside temperatures, it's a vulnerable point in your water system, so it needs to be protected from the cold.

What happens if you don't cover your outdoor faucet?

Many times, an outdoor faucet will extend into the garage or the crawl space, and if the wind gets in here, you will lose energy efficiency. Having an outside water faucet cover will take care of the chill that can happen through this.