PEX vs Copper Repiping: Key Differences

When you repipe a home, the choice is usually PEX or Copper Type L. Both are proven. The right fit depends on cost, access, water quality, exposure, and local code.

Why Homeowners Choose PEX Piping

  • Lower leak risk. PEX resists pinhole leaks common in aging copper.
  • Freeze resistant. Expands in freezing conditions to reduce burst risk.
  • Cost savings. Often about 25 percent less than copper due to faster installs and lower material cost.
  • Flexible. Bends through tight spaces and long runs with fewer fittings.
  • Corrosion resistant. Unaffected by most soil conditions and water chemistry.

Benefits of Copper Type L Piping

  • Longevity. Properly installed systems can last 40 to 60 years.
  • High heat resistance. Handles very hot water and mechanical rooms well.
  • Fire resistant. Non combustible for fire prone areas.
  • Structural strength. Rigid and durable for exposed runs.
  • Proven track record. Decades of reliable use in homes and buildings.

Cost Comparison

  • PEX repiping. Typically about 25 percent less due to speed and material.
  • Copper Type L repiping. Higher upfront cost, sometimes preferred for specific codes or exposed areas.

Which One Should You Choose

  • Choose PEX for a cost effective, flexible, corrosion resistant, and fast install solution.
  • Choose Copper Type L for a rigid, time tested material with high heat resistance and UV tolerance outdoors.
Plumbing Solution Specialist is an Uponor PEX installer and a Copper Type L repipe expert. We assess layout, water quality, exposure, and budget to recommend the best long term option.
PEX Copper Type L
Cost About 25 percent lower Higher upfront
Install time Faster. Fewer fittings Slower. Soldered joints
Corrosion No corrosion Can corrode and form pinholes
Durability Flexible and long lasting Rigid. 40 to 60 year life
Sun exposure Not for UV exposure Suitable outdoors and in sun
Noise Quieter. Dampens water hammer Louder on sudden stops
Ready to compare options for your home. Our Southern California repipe team delivers clean work, inspections, and documented warranties.