Frozen Drain Pipes What To Do 🆕 Top

This guide applies to drain pipes (wastewater leaving sinks, tubs, toilets). If your supply pipes (pipes bringing clean water into the house) are frozen, that is a more urgent emergency. This guide does not cover gas lines or supply lines.

Run hot water for 30 seconds. If no water comes out of the vent on the roof, but the sink backs up immediately, the freeze is likely near the fixture. frozen drain pipes what to do

Once your pipes are flowing freely, take steps to ensure they don't freeze again during the next cold snap. This guide applies to drain pipes (wastewater leaving

– melt from the drain opening toward the main stack. This prevents water from being trapped behind the ice plug. Run hot water for 30 seconds

If you suspect your drain pipes have frozen, here is a comprehensive guide on how to identify, thaw, and prevent this issue from recurring. How to Tell If Your Drain Pipe is Frozen

| Method | Best for | How to do it | |--------|----------|----------------| | | P-traps & accessible pipes | Boil water, slowly pour down drain. Wait 1 min, repeat. | | Hair dryer | Pipes under sinks/basements | Set to medium heat. Move constantly over frozen section. | | Heat lamp | Crawlspaces or long pipe runs | Position 12–18 inches away. Check every 10 min. | | Electric heating pad | Metal or thick plastic pipes | Wrap around pipe, set to low/medium. | | Space heater | Large frozen area | Place safely away from flammables. Increase room temp to 50°F+ for several hours. |