Plumbing
CPVC vs PVC pipe: where to use each
CPVC and PVC look similar, but they are not interchangeable. Use this as a starting point, then confirm the exact pipe on site.
4 min read
Where each is used
- CPVC is commonly used for hot and cold water inside the house
- PVC is commonly used for cold water and drainage
- Do not solvent-weld a CPVC fitting onto a PVC pipe
- Match the diameter to the existing line, for example 1 inch
Practical checklist
- Confirm hot or cold water
- Measure the diameter
- Buy matching fittings
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