How To Unfreeze A Drain ((better)) -

Slow, steady heat wins the race. Never rush a frozen drain with high heat or mechanical force. If you take your time and work safely, most simple frozen drains will thaw within an hour.

A frozen drain is a plumbing emergency. Unlike a frozen supply pipe (which bursts outward), a frozen drain is usually full of standing water mixed with soap scum, grease, or debris. When this freezes, it expands and can easily crack PVC or cast iron pipes. how to unfreeze a drain

: Avoid using standard liquid drain cleaners (like Drano) on a frozen pipe. If the pipe doesn't clear, you’ll be left with a tub full of standing, caustic chemicals that make it dangerous for you or a plumber to work on later. Slow, steady heat wins the race

This is the most common and effective method for pipes under a sink or in an open basement. A frozen drain is a plumbing emergency

: Heat a kettle of water until it is hot (but not boiling if you have PVC pipes to avoid melting them).