How To Thaw A Frozen Drain Updated -

Aim at the wall where you suspect the freeze. Check for hot spots; don’t overheat drywall.

For metal traps only (salt corrodes some metals). Mix 1 cup salt with 1 gallon warm water. Pour slowly. Salt lowers freezing point. For Drains Inside Walls (No Direct Access) A. Increase room temperature Open cabinet doors under sink to let warm air circulate. Use space heater in the room. Raise thermostat to 75–80°F for a few hours. how to thaw a frozen drain

Aim at the frozen pipe from a safe distance (3+ feet). Good for crawlspaces. Aim at the wall where you suspect the freeze