CPVC is more suitable than standard PVC for high-temperature installations.

• A. True
• B. False
• C. They are equally suitable
• D. CPVC cannot operate at high temperatures

Answer: (A)

CPVC is more suitable for high-temperature installations because it has greater heat resistance than standard PVC. The extra chlorine in CPVC raises the material’s glass-transition temperature, so CPVC can carry hot water without softening or losing strength. Standard PVC, by contrast, softens and weakens at elevated temperatures, so it’s generally used only for cold or limited-temperature applications. In practice, CPVC is commonly rated for hot water service up to about 180°F (82°C), while standard PVC is typically limited to around 140°F (60°C). This makes CPVC the better choice when hot water or higher-temperature environments are involved.