Why You Should Never Use PVC for Hot Water – Heat Vulnerability and Safer Alternatives
During boiler or water heater installations, some people still try to use PVC pipes. However, this can lead to leaks, bursts, or even injuries . This article explains why PVC is unsuitable for hot water applications and what better alternatives exist. 1. Heat Weakness of PVC – How Much Can It Handle? PVC is a type of plastic that loses its structural integrity above 50~60℃ . As the temperature rises, the pipe softens, loses pressure tolerance, and may eventually rupture. Above 60℃ (140°F): Softens and weakens Above 70℃ (158°F): Structural instability, adhesive failure Above 80℃ (176°F): Pipe deformation, leaks, and bursts Using PVC for hot water is like installing a ticking time bomb . 2. Real-World Failure Cases In one apartment complex, a cost-cutting contractor used PVC for hot water lines, which ruptured during winter heating and caused severe burns . In another case, a hot water pump line melted and ad...