Water Temperature

• CPVC can endure higher water temperatures than PVC. Hence, CPVC pipes carry both cold and hot water, while you should only run cold water through PVC pipes. Because of the differences in heat resistance, CPVC pipes are more popular than PVC pipes in residential and commercial projects.
  
  

Chemical Resistance

• PVC pipes are unharmed by most acids, bases, salts and oxidants. CPVC pipes have similar chemical-resistant qualities.
  
  

Strength and Flexibility

• While PVC is a resilient material, CPVC is stronger and more flexible, making it more resistant to fractures.
  
  

Warning

• Although both PVC and CPVC pipes are difficult to ignite, they will melt in intense fires. Melting CPVC pipes may give off more environmental pollutants because they have been chlorinated.