Slowly pour the hot water down the drain. Never pour boiling water directly onto cold PVC plastic or ceramic fixtures, as the extreme thermal shock can crack them. 2. The Hair Dryer or Heat Gun Method
Walk through your basement, crawl space, attic, or uninsulated garage. Look for exposed drainage pipes running through these cold areas. how to unfreeze a drain pipe 2021
Hot water
If the frozen pipe is inside a cold utility closet, crawlspace, or basement vanity, you can warm up the entire ambient area. Slowly pour the hot water down the drain
Many older homes have cast iron or PVC drain pipes that behave differently when frozen. PVC becomes brittle – do not use an open flame (see below). The Hair Dryer or Heat Gun Method Walk
When winter temperatures plummet, frozen pipes become a homeowner’s nightmare. But while most people worry about frozen (which burst and flood homes), frozen drain pipes cause a different kind of misery: standing water in sinks, toilets that won’t flush, and sewage backups into your bathtub.