Based on aggregated data, a whole-house repipe costs $4,000 to $18,000, with a national average near $7,500. That is an unusually wide span for a single line item, and the reason is not that some metros are four times dearer than others. The spread is material, not market: PEX systems occupy roughly $4,000 to $10,000 of the band and copper systems roughly $8,000 to $18,000.
Two things follow from that, and they set up everything below.
Neither material has a published midpoint here, and neither is given one. Compiled sources disagree at the top of the copper band — some stop at $15,000, others at $18,000 — and this dataset widens the range rather than averaging the disagreement away, exactly as the methodology describes. A midpoint nobody measured would be a comfortable number to print and a false one, so the two material bands are carried as bands.
The gap between the bands is bought almost entirely in labor hours. Copper tube costs more per foot than PEX, but not four times more on a whole system. What costs four times more is the joint. Everything else on this page — service life, water chemistry, freeze behaviour, noise, code, scrap value — sits on top of that single arithmetic fact.
The job itself, in terms of house size, access, foundation type and what the crew has to open up, prices out on the whole-house repipe cost page. This one is about the two materials.
The Joint Is the Whole Price Difference
A supply system is not tube. It is tube plus a connection at every fitting, tee, elbow, drop, stub-out and valve, and the connection is where the hours go.
| Copper | PEX | |
|---|---|---|
| How a connection is made | Cut, ream, clean the tube and the fitting, apply flux, heat with a torch, feed lead-free solder, let it cool | Slide the ring, push the fitting, one squeeze of a crimp, cinch or expansion tool |
| Steps per connection | 7 to 9 | 2 to 3 |
| Aggregated time per connection | 20 to 30 minutes | 5 to 10 minutes |
| Tool at the joint | Torch, flux, solder, striker, heat shield | Battery or hand tool |
| Open flame in the wall cavity | Yes | No |
| Can be made in a wet line | No — the joint has to be dry to solder | Yes |
| Redo if it leaks | Reheat, pull apart, clean, resolder | Cut out the fitting, redo |
Run that across a system and the difference stops being a detail:
| Per 100 connections | Copper | PEX | Difference |
|---|---|---|---|
| Crew time | 33 to 50 hours | 8 to 17 hours | 16 to 42 hours |
| At the $112 national hourly rate for the trade | $3,730 to $5,600 | $930 to $1,900 | $1,870 to $4,670 |
That is one line of arithmetic, using only the aggregated time-per-joint figures and the plumbing trade’s $112 national average rate, and it already accounts for a large share of the distance between a $6,000 quote and a $13,000 one. Hourly economics across the trade are broken down in what a plumber charges per hour.
The tube itself moves the total far less than most comparisons imply:
| Material, per linear foot | Aggregated range |
|---|---|
| PEX tubing | $0.40 to $2.00 |
| Copper tubing (moves with the commodity) | $2.00 to $8.00 |
| PEX fittings | $0.50 to $2.00 each |
| Copper fittings | $1.00 to $3.00 each |
Copper tube is genuinely several times the price of PEX tube per foot, but tube is the smaller half of a smaller half. In the project data, materials account for $1,200 to $5,400 of a repipe against $2,800 to $12,600 of labor — labor is roughly 70 percent of the invoice at every point of the band. A material that doubles the material line moves the total less than a material that doubles the hours.
There is a third path that is neither soldered nor crimped. Press fittings join copper cold, with a hydraulic tool that crushes a stainless ring onto an EPDM O-ring, in well under a minute per connection. They erase most of copper’s labor penalty and replace it with a tool cost: press tools run into the low thousands of dollars to buy, with day rentals available, and press fittings themselves cost several times a solder fitting. On a whole-house system that trade is usually worth it to a crew that owns the tool and not to one that does not, which is one reason two copper quotes on the same house can differ by thousands.
The Two Materials, Property by Property
| Copper | PEX | |
|---|---|---|
| What it is | Drawn copper tube, Type M (thin wall), L (medium), K (thick) | Cross-linked high-density polyethylene |
| Standards on the product | ASTM B88 tube; lead-free solder and 0.25 percent lead-free fittings for potable water | ASTM F876 tubing, ASTM F877 system, ASTM F2023 chlorine class |
| Joining | Solder, press, compression, flare | Crimp ring, cinch clamp, cold expansion, push-to-connect |
| Rigidity | Rigid; every direction change is a fitting | Flexible; bends around framing with no fitting |
| Pressure and temperature rating | Far beyond domestic service | 160 psi at 73°F, 100 psi at 180°F, 80 psi at 200°F |
| Aggregated service life | 50 to 70 years | 30 to 50 years |
| What actually ends its life | Water chemistry — pinholes and pitting | Heat and chlorine or chloramine exposure; UV before installation |
| Freeze behaviour | Splits the tube or opens a joint | Stretches and often recovers; fittings are the weak point |
| Sound | Transmits flow noise and water hammer through the structure | Damps both |
| UV exposure | Unaffected | Degrades; manufacturer exposure limits are measured in weeks to months |
| Rodents | Immune | Can be gnawed through |
| Recyclable at removal | Yes, with real scrap value | No meaningful scrap value |
| Behaves near heat sources | No practical ceiling in domestic service | Kept clear of flues and recessed cans; a copper stub is normal at the water heater |
The temperature line is the one printed on the side of every PEX tube and read by almost nobody: 160 psi at 73°F, 100 psi at 180°F, 80 psi at 200°F. The rating is a curve, not a number, and it is why a PEX system carries a short copper or brass transition at the water heater outlet. Appliance-side work is priced separately in water heater replacement labor.
PEX-A, PEX-B and PEX-C
“PEX” names one polymer cross-linked three ways, and the three do not install the same, cost the same, or join the same.
| PEX-A (peroxide / Engel) | PEX-B (silane / moisture cure) | PEX-C (electron beam) | |
|---|---|---|---|
| Flexibility | Highest | Moderate | Lowest of the three |
| Thermal memory | Yes — a kink can be heated out and the tube recovers | No — a kink is cut out | No |
| Usual fitting | Cold expansion (ASTM F1960): the tube is stretched, the fitting inserted, the tube shrinks back onto it | Crimp ring or stainless cinch clamp over an insert fitting | Crimp or cinch |
| Effect on bore | Full bore — the fitting sits inside the stretched tube | Insert fitting narrows the inside diameter at every connection | Narrows the bore |
| Tool | Expansion tool, several hundred dollars | Crimp or cinch tool, roughly $80 to $150 | Same as PEX-B |
| Aggregated material premium | Roughly 20 to 30 percent above PEX-B | Baseline | Near PEX-B |
The bore difference is the part with a measurable consequence. Every insert fitting in a PEX-B system is a small restriction, and a system with many of them can show a pressure drop that a full-bore expansion system does not. Whether that matters depends on how many fixtures run at once and how the system is laid out — which is the next question.
Home-Run Manifold or Trunk-and-Branch
The layout decision is usually bundled into the material decision, because the two joining methods push in opposite directions.
Trunk-and-branch is the copper habit: a large trunk line runs through the house and smaller branches tee off it to each fixture. Every tee, elbow and drop is a joint, which is exactly the thing copper charges for.
Home-run manifold is the PEX habit: one manifold near the water heater, and a continuous, unbroken tube from that manifold to each individual fixture. There are no in-wall connections at all between the manifold and the stop under the sink. Flexible tube makes it possible; the near-zero cost of a connection at the manifold makes it cheap.
| Trunk-and-branch | Home-run manifold | |
|---|---|---|
| Tube footage | Lower | Higher — every fixture gets its own run |
| In-wall connections | Many | Effectively none |
| Extra material | Fittings | Manifold assembly, aggregated at roughly $150 to $600 |
| Shutoff per fixture | At the fixture only | At the manifold and at the fixture |
| Pressure when several fixtures run | Drops on shared branches | Isolated per run |
| Hot-water wait | Set by the volume of the shared path | Set by the volume of one small run |
That last row is arithmetic, not preference. A run holds roughly 0.010 to 0.012 gallons per foot at half-inch and about 0.025 at three-quarter-inch, and the wait at a tap is however long it takes to push the cooled water in the path out of the way. A 40-foot half-inch home run holds under half a gallon. The same fixture fed through a three-quarter-inch trunk and a branch can sit behind two to three times that volume, which is why a manifold layout usually shortens the wait at distant fixtures without a recirculation loop being involved at all.
The trade is footage. A home-run system uses noticeably more tube, and PEX is cheap enough per foot that the extra footage costs less than the fittings it deletes. Reproduce the same layout in copper and the arithmetic inverts: more footage in the expensive tube, and the fitting savings never arrive because a manifold in copper still needs a soldered joint at every port.
Water Chemistry: Why Some Copper Systems Fail Early
Copper’s 50-to-70-year figure is a property of copper in benign water. In aggressive water it is not unusual for a system to start weeping pinholes inside 20 years, and this is the single largest source of variance in copper’s real service life.
Three conditions drive it:
- pH. Water below roughly 6.5 is corrosive to copper. Soft, low-alkalinity supplies with little buffering capacity are the classic pinhole geography, and the failures arrive as a cluster rather than as one leak, because the whole system saw the same water.
- Velocity. Water moving too fast scours the protective oxide film off the tube wall from the inside — erosion corrosion, concentrated at elbows and just downstream of them. Design practice commonly caps velocity near 5 feet per second on hot lines and 8 on cold, and an undersized run in a high-pressure system exceeds that quietly for years.
- Disinfectant and dissolved oxygen. Chloramine and high dissolved oxygen, plus flux residue left in the tube at installation, produce the pitting that shows up as a pinhole in the middle of a straight run with nothing obviously wrong around it.
PEX is indifferent to pH and to erosion at domestic velocities. Its own chemistry exposure is the opposite one: chlorine and chloramine attack the polymer from the inside, and heat accelerates it, which is why the tube carries an ASTM F2023 chlorine-resistance class and why a continuously recirculated hot line is the harshest service a PEX system sees.
The practical read on both is that the water in a given area has already decided how the last copper system in the house performed. A house on its second set of pinholes has evidence about its own water; the arithmetic for one-off failures is in burst pipe repair cost at $200 to $2,000 per event.
Copper wall thickness is the one lever inside the material. Type L carries a thicker wall than Type M and buys years in aggressive water at a modest material premium; Type M is thinner, cheaper, and the grade most often quoted where local code allows it above ground. A copper quote that does not name the type is not a complete quote.
Freeze, Noise and the Rest of the Behaviour
Freeze. Cross-linked polyethylene stretches. When an ice plug forms, PEX expands with it and frequently returns to shape; rigid copper has nowhere to go and splits along the tube wall or blows a solder joint. That difference is real and it is routinely overstated: a brass insert fitting does not stretch, so a PEX system that freezes hard tends to fail at a fitting rather than mid-run, and a frozen run of either material stops delivering water long before it decides whether to fail. In a cold metro the choice changes the failure mode and where the repair happens, not the exposure. Minneapolis, Chicago, Philadelphia and Seattle all sit in the freeze-relevant half of this dataset, and all of them are also above the national labor benchmark, which stacks the two effects on the same houses.
Noise. Copper is a rigid metal tube fastened to framing, so it transmits flow hiss, thermal expansion tick and water hammer into the structure. PEX damps all three. Against that, PEX is light and flexible enough to move when a valve slams, so it needs proper support spacing to keep from whipping in a bay — a support omission is audible in a PEX system in a way it is not in copper. Water hammer arrestors run roughly $15 to $40 each in either system.
UV. PEX degrades in sunlight. Manufacturer exposure limits are measured in weeks to a few months of accumulated outdoor exposure before installation, which makes tube that has been sitting on a yard rack a real question and rules PEX out for permanently exposed exterior runs. Copper does not care.
Rodents. PEX can be gnawed through. Copper cannot. In houses with a history of rodent activity in a crawl space or attic, that is a documented failure mode with no equivalent on the copper side.
Heat. PEX is kept clear of flues, recessed lighting cans and appliance vents, and terminates in a metal transition at the water heater. Copper has no equivalent constraint in domestic service.
Code Acceptance
PEX is listed as an accepted water distribution material in the model residential code — the International Residential Code — subject to the tubing meeting ASTM F876 and the assembled system meeting ASTM F877. Copper is accepted everywhere, without qualification.
The wrinkle is that model code is not law until a jurisdiction adopts it, and jurisdictions amend what they adopt. A small number of local authorities restricted or delayed PEX approval well after the model code listed it, and a handful of specific applications — an underground run inside a building, a water service line from the meter, a fire sprinkler tie-in — carry their own local rules. This is the one section of this comparison where the national answer does not settle the local one, and the building department for a specific address does.
Cost per Year of Service
The installed price alone answers a question nobody keeps: what the system costs on the day it goes in. Dividing the band by the service life answers the one people actually live with.
| Installed band | Service life | Cost per year, band low ÷ life high | Cost per year, band high ÷ life low | |
|---|---|---|---|---|
| PEX | $4,000 to $10,000 | 30 to 50 years | $4,000 ÷ 50 = $80 | $10,000 ÷ 30 = $333 |
| Copper | $8,000 to $18,000 | 50 to 70 years | $8,000 ÷ 70 = $114 | $18,000 ÷ 50 = $360 |
The bands overlap almost completely, and that is the honest answer rather than a hedge. A copper system quoted near the bottom of its band and held for 70 years costs less per year than a PEX system quoted near the top of its band and replaced at 30. Reverse both assumptions and PEX wins by a factor of four.
The second calculation is the replacement horizon. Matching copper’s 50-to-70-year life takes one to two PEX systems. In today’s dollars, before any discounting and before any assumption about future prices, two PEX repipes at $4,000 to $10,000 each total $8,000 to $20,000 — which is the copper band, arrived at from the other direction. The materials are much closer over a lifetime than they are over a quote, and the reason to prefer one over the other is rarely the total.
What the arithmetic will not do is decide the case, because it depends on three things a table cannot know: how long the house is held, what the local water does to copper, and where in each band the actual quotes land.
What the Two Materials Cost by Metro
Only labor moves with the metro. Tube, fittings and manifolds are priced broadly nationally, while the hours are priced by the local trade wage — which means the city adjustment hits copper harder than PEX, because copper’s cost sits disproportionately in the hours. A metro premium applied to a labor-heavy copper system produces a larger dollar swing than the same premium applied to a labor-light PEX one.
The three columns below track the repipe band as a whole. The low column is where PEX systems sit, the high column is where copper systems sit, and the middle is the national average job.
| City | Labor Adjustment Factor | Low end (materials $1,200 + labor) | National average job | High end (materials $5,400 + labor) | Labor portion, average job | vs. National |
|---|---|---|---|---|---|---|
| Seattle, WA | 1.29 | $4,810 | $9,025 | $21,655 | $6,775 | +29% |
| Minneapolis, MN | 1.27 | $4,755 | $8,920 | $21,400 | $6,670 | +27% |
| Philadelphia, PA | 1.12 | $4,335 | $8,130 | $19,510 | $5,880 | +12% |
| Atlanta, GA | 0.92 | $3,775 | $7,080 | $16,990 | $4,830 | −8% |
| San Antonio, TX | 0.85 | $3,580 | $6,715 | $16,110 | $4,465 | −15% |
Whole-house repipe, national figures from the project data, labor adjusted by metro. Materials are held national.
Labor adjustment factors are derived from BLS Occupational Employment and Wage Statistics (May 2025): the median ratio of local to national hourly wages across the trades that do this work. How this is calculated.
Read the first and third columns together and the structural point appears: the metro spread on the low-end job is a few hundred dollars, and on the high-end job it is thousands. Same percentage, different base, because the base is mostly hours. Seattle and Minneapolis sit near the top of this set and San Antonio at the bottom. The full dataset runs from 1.33 in Chicago down to 0.85 in San Antonio, and on a copper-band job that span is worth thousands of dollars in hours alone.
The materials-versus-labor split behind these columns — $1,200 to $5,400 against $2,800 to $12,600 — is what makes the material decision a labor decision in the first place, and it is derived rather than quoted; see the methodology for how the adjustment is measured from metropolitan wage data.
The Copper That Comes Out
A repipe removes an entire house of copper tube, and that tube is a commodity with a live price.
The grade matters. Copper that comes out of a wall arrives with solder, brass fittings and sometimes paint attached, which grades it as number two copper tubing rather than clean number one. Scrap pricing for that grade is a live commodity figure rather than a fixed one — it moves daily with the metal — so the table below runs the arithmetic at an assumed $3 to $5 per pound and labels it as the assumption it is.
The arithmetic is straightforward and the result is smaller than most people expect. Half-inch and three-quarter-inch copper tube weighs roughly 0.2 to 0.45 pounds per foot depending on diameter and wall type, so:
| Tube removed | Weight | Scrap value at $3 to $5 per pound |
|---|---|---|
| 100 feet | 20 to 45 lb | $60 to $225 |
| 250 feet | 50 to 113 lb | $150 to $565 |
| 400 feet | 80 to 180 lb | $240 to $900 |
Two honest qualifications. The high end of that table assumes heavy-wall tube and a strong scrap day, and the low end is nearer to typical. And whether the value is credited is a contract term, not a standard practice: aggregated practice is that the removed material belongs to the contractor unless the agreement says otherwise, which is why the salvage line is worth reading in a quote rather than assuming. On a $12,000 copper-to-PEX conversion, a few hundred dollars of scrap is real money and rounding error at the same time.
There is no equivalent on the other side. PEX has no scrap market, and a removed PEX system is disposal.
Partial and Hybrid Repipes
Whole-house is the query. It is frequently not the quote.
Two intermediate scopes recur, and both are material decisions rather than scope reductions:
The partial repipe. Only the failing portion is replaced — typically the horizontal runs in an accessible crawl space, basement or attic, leaving vertical drops and stub-outs inside finished walls alone. It prices between a single repair and a whole system, and it is the shape a quote takes when one part of the house has a different pipe in it than the rest. For context at the small end, a single-point failure prices at $200 to $2,000 as a burst pipe repair, with a typical repair near $650 — four of those is $2,600 in invoices and four rounds of opening and patching, which is the arithmetic that turns a repair pattern into a repipe conversation.
The hybrid system. PEX in the walls and under floors, copper for the exposed and the demanding parts: the transition at the water heater, exterior hose bibbs, anything running through a sunlit or rodent-prone space, and often the visible stub-outs at fixtures where a rigid chrome finish is expected. This is not a compromise so much as each material used where its failure mode is absent, and it is common enough in quotes that a bid described as “PEX” often already contains copper.
A hybrid also removes the argument for a full copper system in most cases, because the two properties copper is uniquely bought for — heat tolerance at the appliance and immunity to UV and rodents outside the envelope — apply to a small fraction of the total footage.
Resale, Insurance and the Appraisal
Two claims circulate here and both need trimming to what is actually supportable.
Resale. Copper is sometimes marketed as a premium feature, and there is no compiled figure in this dataset assigning a dollar value to copper over PEX at sale. What is documented is the inverse: a house still carrying polybutylene or galvanized steel supply lines is the one that draws a price adjustment, and a completed repipe in either modern material removes that objection. The value is in what the repipe replaced, not in which of the two replaced it.
Insurance. Polybutylene is again the material that draws attention from insurers, and both copper and PEX are standard accepted materials. Anything more specific is set by an individual carrier and an individual policy, not by the pipe.
Documentation. What survives the sale is the paperwork — the permit record, the inspection sign-off and the invoice naming the material, the type or class, and the layout. A buyer’s inspector can see the visible portion of a system in a basement or attic and nothing behind drywall. Where a sewer line is also in question, that is a separate scope entirely and is covered in sewer scope inspection cost; a supply repipe touches none of it.
Doing the Joints Yourself
The DIY question splits cleanly along the same seam as the price: the tools are cheap on one side and not on the other.
| Copper, soldered | Copper, pressed | PEX-B, crimp or cinch | PEX-A, expansion | |
|---|---|---|---|---|
| Tool cost | Torch kit $40 to $120, plus cutter, reamer, brushes | Press tool in the low thousands to buy; day rentals available | Crimp or cinch tool $80 to $150 | Expansion tool, several hundred dollars |
| Consumables | Flux, lead-free solder, heat shield | Fittings several times the price of solder fittings | Rings or clamps, cents each | Rings, cents each |
| Skill acquired in | Practice joints, then more practice joints | Minutes | Minutes | Minutes |
| Failure mode of a bad joint | A weep that appears days later, inside a wall | Unseated ring | Loose ring, visible on the gauge | Insufficient expansion |
| Open flame involved | Yes, in a stud bay | No | No | No |
The honest framing is that the hand tools do not decide it. Soldering introduces an open flame into a closed framing cavity, which is why contractors carry flame protection and why some jurisdictions and insurers treat hot work as a distinct category. A crimped or expanded connection has no such profile, which is a large part of why PEX changed who can do this work at all.
What neither column shows is that a repipe is a permitted, inspected job in most jurisdictions, that the pressure test is the only real verdict on 100-odd connections, and that the work happens in a house with the water off. Those constraints — not the tool price — are what the whole-house repipe cost page prices.
Related Plumbing Costs
- Whole-house repipe cost at $4,000 to $18,000 — the job as it is actually executed: access, scope, sequence and what the quote covers
- Burst pipe repair cost at $200 to $2,000 — the single-failure arithmetic that precedes most repipe decisions
- What a plumber charges per hour — the $112 national rate that turns joint minutes into dollars
- Water heater replacement labor cost — the transition point where a PEX system goes back to metal
- Gas water heater installation cost at $800 to $3,000 — the appliance at the end of the hot side
- Sewer scope inspection cost at $100 to $700 — the drain side, which a supply repipe does not touch
- All plumbing costs · Methodology