PEX vs Copper Repipe Cost Comparison
Compare a PEX and a copper repipe on your own figures — pipe length × $/ft plus labor for each — and see which comes out lower and by how much. Illustrative math on the numbers you enter, not a recommendation.
Calculator
On your figures, PEX comes out lower by about $1,080.00 for this run. Copper and PEX differ in material and labor as well as longevity and feel — illustrative math on your numbers, not a recommendation.
PEX (cross-linked polyethylene) and copper are the two mainstream repipe materials, and the choice is part cost, part preference. PEX is flexible, quick to run, tolerant of freezing, and cheaper in both material and labor. Copper is rigid, has a decades-long track record, is not affected by UV or certain rodents, and is often preferred for its longevity and resale story — at a higher price.
This comparison keeps both on the same footing: the same total pipe length, each with its own material price per foot and its own labor. Because you enter the prices, it reflects your two quotes in your market rather than a national average that would drift out of date.
Formula
Each material is priced as its pipe cost plus its own labor, then compared:
PEX total = length × pex_price_per_ft + pex_labor copper total = length × copper_price_per_ft + copper_labor difference = | PEX total − copper total |
Material price per foot and labor are both yours. Copper pipe usually costs more per foot and takes longer to install (sweated or pressed joints), while PEX is cheaper and faster — but the point is to compare your two quotes, not a generic table.
Worked example
200 ft of pipe, PEX at $0.60/ft with $1,800 labor versus copper at $3.00/ft with $2,400 labor:
- PEX: 200 × $0.60 + $1,800 = $1,920
- Copper: 200 × $3.00 + $2,400 = $3,000
- Difference: $3,000 − $1,920 = $1,080 in PEX’s favor
Copper’s premium here is both material and labor. Swap in your own quoted prices — in some markets and layouts the gap narrows.
Cost is only half the choice
Cost is only part of the decision. Copper is more rigid and time-tested and some buyers and inspectors favor it; PEX is faster, freeze-tolerant and needs fewer fittings on long runs. Both are code-accepted in most jurisdictions, but local code and your inspector have the final say on materials — confirm before you commit.
Common supply materials people weigh in a repipe: PEX (flexible), Copper (type L), CPVC. Those labels are guidance only — enter the actual price per foot from your quote for whichever two you are comparing; the tool does not carry any material prices. For the full repipe including permit and contingency, use the whole-house repipe cost tool.