Copper vs. PEX Piping: Which is Best for Your Home?

If your piping is showing its age, you’re probably looking at a full repipe. But before the work begins, you’ll need to choose between two popular plumbing materials: copper and PEX.

Each has its pros and cons, and the right choice depends on your home, budget, and long-term goals.

Let’s break down the differences and help you decide what makes the most sense for your plumbing upgrade.

Repiping with PEX: The flexible option

If you’re wondering how to repipe with PEX, it’s all about flexibility. PEX (cross-linked polyethylene) is a flexible plastic piping material that can be snaked through walls, around corners, and into tight spaces with minimal cutting.

The repiping process typically looks like this:

1. Turn off the water and drain the system
2. Cut and cap old plumbing lines
3. Run new PEX lines through access points in walls, ceilings, or under floors
4. Connect the PEX system to existing fixtures and the main supply
5. Test for leaks and patch up access points

Because PEX is easier to work with, it typically shaves hours (or even days) off the installation time compared to rigid copper piping. That means less disruption and faster results.

How Long Does It Take to Repipe a House with PEX?

On average, how long does it take to repipe a house with PEX? Most homes can be fully repiped in 1 to 3 days, depending on the size of the home and the accessibility of the plumbing system.

Because PEX is easier to work with, it typically shaves hours (or even days) off the installation time compared to rigid copper piping. That means less disruption and faster results.

Repiping With Copper: The More Durable Option

Copper is a traditional choice for home plumbing because of its durability, lifespan, and its naturally antimicrobial properties.

While copper takes longer to install, many homeowners appreciate its long-standing reputation for durability, heat resistance, and water quality. It’s a great choice if you’re looking for a time-tested, high-performance system.

The Copper Repiping Process Generally Involves:

• Shutting off and draining the plumbing system
• Cutting into walls to access the full pipe layout
• Removing and disposing of the old pipes
• Installing rigid copper pipe sections that require precise measurements
• Soldering connections with a torch
• Pressure-testing the system for leaks and patching walls

How Long Does Copper Repiping Take?

Now, how long does copper repiping take? Copper repiping usually takes about 3 to 5 days for a standard home. The process involves cutting into walls, carefully routing rigid copper tubing, and making precise soldered connections.

Copper vs. PEX: Pros and Cons

Here’s a quick comparison to help you decide:

Which Is Best for Your Home?

Both materials are safe and reliable, but your decision might come down to your priorities.

Choose copper if: You’re after a traditional, high-performance system and don’t mind the extra cost. Copper is a solid investment.

Choose PEX if: You want a faster, affordable, less invasive install at a lower price point.

Still Debating Between Copper and PEX? A licensed plumber can walk you through your options, evaluate your home, and recommend the best material for your situation.

Every home is different, and the best choice depends on your priorities. Whether you’re leaning toward time-tested copper or flexible PEX, we can help you make the right call.

Talk to a repiping expert today and get a personalized recommendation for your home.

Frequently Asked Questions

Is PEX cheaper than copper for repiping?
Yes. PEX generally costs 30–50% less than copper in both material and labor. It’s a more budget-friendly option for full home repipes or remodels.

Does copper last longer than PEX?
In ideal conditions, copper can outlast PEX slightly, with a lifespan of 50+ years. However, PEX still lasts 40–50 years and performs just as well in most homes.

Which is easier to install: copper or PEX?
PEX is much easier and faster to install. It requires fewer wall cuts, no soldering, and minimal special tools, making it ideal for retrofitting older homes.

Is PEX safe for drinking water?
Yes. Certified PEX tubing is safe to deliver drinking water and meets all U.S. safety standards. Just make sure it’s third-party certified.

Can PEX be used outside?
Not directly. PEX is sensitive to UV rays and should not be exposed to sunlight. For outdoor plumbing, copper is a better choice.

Will copper resist corrosion better than PEX?
Both materials resist corrosion well. However, copper can develop pinhole leaks in homes with acidic or untreated water. PEX is more resistant to internal buildup and chemical exposure.