1. Overview of the Problem A bathtub that drains fine in warm weather but suddenly stops draining (or drains very slowly) when temperatures drop is a classic sign of a weather-related blockage . The issue is rarely the tub itself, but rather what happens to water and debris in the drainpipe as it exits your home’s warm interior and enters the unheated or frozen space beneath the house.

Bathtub Won't Drain Cold Weather !!hot!! Link

1. Overview of the Problem A bathtub that drains fine in warm weather but suddenly stops draining (or drains very slowly) when temperatures drop is a classic sign of a weather-related blockage . The issue is rarely the tub itself, but rather what happens to water and debris in the drainpipe as it exits your home’s warm interior and enters the unheated or frozen space beneath the house.