PEX vs Copper Repipe
PEX and copper are the two most common materials used for whole house repiping. Both are approved plumbing materials, but they differ in flexibility, installation method, longevity, and cost. The best choice depends on the home, budget, and performance goals.
What Is PEX Piping
PEX is a flexible cross linked polyethylene pipe that is resistant to corrosion and scale buildup. Its flexibility allows installers to run longer continuous lines with fewer fittings.
- Flexible and easier to route through walls and attic
- Resistant to corrosion and pinhole leaks
- Typically faster installation
- Lower overall installation cost
What Is Copper Piping
Copper piping is a rigid metal pipe that has been used in residential plumbing for decades. When installed correctly, it offers long term durability and proven performance.
- Rigid and highly durable
- Long track record in residential plumbing
- Handles high temperatures well
- More labor intensive to install
PEX vs Copper Performance Comparison
Both materials deliver reliable water service, but they perform differently depending on conditions inside the home.
- PEX is quieter and absorbs vibration better
- Copper is rigid and holds its shape permanently
- PEX is less affected by water chemistry
- Copper can be affected by corrosive water over time
Which Repipe Option Is Best for My Home
PEX is often recommended for homes with complex layouts, slab foundations, or previous corrosion issues. Copper may be preferred when exposed piping is required or when homeowners want a traditional material. A professional inspection helps determine the best option.
Code Compliance and Safety
Both PEX and copper repipes are installed to meet local plumbing codes and inspection requirements. When installed by licensed professionals, both materials are safe for drinking water.
