Frozen Drain Pipe Outside

| Feature | Frozen Supply Pipe | Frozen Drain Pipe | |---------|--------------------|--------------------| | Pressure | High (40–80 psi) | Low (gravity, <2 psi) | | Burst risk | Very high | Low (but joints may separate) | | Mess | Leak inside walls | Sewage backup into home | | Thawing | Heat tape / torch (careful) | Steam / hot water / heat gun |

Recognizing the early warning signs can help you intervene before a pipe bursts. frozen drain pipe outside