: During extreme cold, a tiny trickle of water prevents ice from forming in the trap.

If you've tried heat and hot water for over an hour and the water still isn't moving, you may have a deeper freeze in the main stack. At that point, it’s best to call a licensed plumber to avoid permanent damage to your home’s infrastructure. To help you get this sorted, let me know:

⚡ Never use a blowtorch or open flame to thaw a pipe. This is a leading cause of house fires and can crack plastic PVC pipes or cause metal pipes to burst from rapid expansion. 1. The Boiling Water Method This is the simplest and safest first step. Boil a large pot of water. Slowly pour it directly into the drain.

Are you currently seeing any or cracks on the visible portions of your pipes?

: Use a hairdryer to blow hot air directly into the drain or onto the exposed pipe if you have an access panel.

Close any gaps in your foundation or siding that allow cold air to blow directly onto the plumbing.