How To Unfree !exclusive!ze A Drain Line

| Method in draft | Problem | Fix | |----------------|---------|-----| | Pour hot water | Not directional – may refreeze quickly or crack PVC if boiling. | Specify: “Heat water to 140°F max, pour slowly from the highest access point (vent stack or cleanout).” | | Hair dryer / heat gun | Heat gun can melt/warp PVC in seconds. | Warn: “Heat gun on low only, keep moving. Hair dryer is safer.” | | Salt | Salt water lowers freezing point but can corrode metal traps or harm plants if outdoors. | Add: “Use only in PVC drains; avoid if drain exits to a garden.” | | Electric heat tape | Good for prevention, but not for already frozen solid. | Move to “Prevention” section. |

Draft assumes every freeze can be fixed by the homeowner. Recommendation: Add a clear “Call a Plumber If” box: how to unfreeze a drain line

How to Unfreeze a Drain Line: A Complete Guide to Getting Things Flowing Again | Method in draft | Problem | Fix