Easyheat heat tape provides additional water pipe freeze protection. The are pre-assembled and ready to install using 120 VAC. They will keep water flowing down to -40 degrees F. While this cable adds additional protection for exposed water pipes, it will not alleviate pressure building up from a freeze occuring somewhere else along the plumbing line. You should always drip your hot water faucet to ensure that a freeze does not occur when temperatures get at or below freezing. Freeze is not covered under the Eccotemp warranty on their water heaters.