Frozen Drain

: During extreme cold, open the cabinet doors under sinks to allow warm house air to circulate around the plumbing.

If you suspect your drain is frozen, acting quickly can prevent a pipe from bursting. 1. Identify the Blockage frozen drain

: In older homes with poor insulation, humid air can leak into walls and freeze, essentially turning the wall into a frozen drain that prevents moisture from escaping, eventually causing "flooding" through condensation. How to Thaw a Frozen Drain Safely : During extreme cold, open the cabinet doors