Should I Replace Copper Pipes in My Home?

If you’re wondering, should I replace copper pipes in my home, you’re not alone. Many homeowners face this question as their plumbing systems age. While copper piping has long been known for its strength and durability, it doesn’t last forever. Like all things, copper pipes can break down over time, and when they do, they can cause leaks, water damage, and even affect your water quality.

How Long Do Copper Pipes Last?

The life of copper pipe depends on several factors water quality, pipe thickness, installation methods, and environmental conditions. On average, copper pipes last between 40 to 70 years. If your home is over 40 years old and still has its original plumbing, it may be time to evaluate whether you need copper pipe replacement.

There are two common types of copper pipes:

Type M (thinner wall): Typically lasts 20–50 years.
Type L (thicker wall): More durable, lasting 50+ years.

Warning Signs It’s Time to Replace Copper Pipes

Even if your copper pipes aren’t that old, they can still fail due to wear and tear or poor water chemistry. Some signs to watch for include:

Discolored or metallic-tasting water
Frequent leaks or pinhole leaks
Low water pressure
Greenish stains around joints or under sinks
Visible corrosion or warping

If you’re seeing any of these issues, ask yourself: should I replace copper pipes in my home now, before they cause a major plumbing emergency?

Risks of Keeping Old or Corroded Copper Pipes

Old pipes may seem like they’re working fine, but hidden corrosion can sneak up on you. Corroded copper pipes can leach copper into your drinking water, which is harmful in high amounts. Plus, leaks that go unnoticed can lead to costly damage in walls, floors, or ceilings.

In addition, tiny pinhole leaks might not make a mess right away, but over time, they can promote mold growth, weaken your home’s structure, and increase your water bill.

Why Are Copper Pipes Failing Earlier Today?

Water chemistry plays a huge role in how long copper pipes last. If you have acidic water, high chlorine levels, or hard water with a lot of minerals, these can all accelerate corrosion. That means even newer homes may deal with early copper pipe failure.

In places with aggressive water or inconsistent water pressure, even thick-walled copper piping might show cracked joints, discoloration, or slow leaks after only a couple of decades.

When Should I Replace Copper Pipes in My Home?

You don’t always need to replace your whole plumbing system. But there are a few cases where copper pipe replacement is strongly recommended:

Frequent leaks: If repairs are becoming regular, full repiping may save you money in the long run.
Major renovations: If you’re remodeling a kitchen, bathroom, or basement, that’s a smart time to update the piping.
Visible corrosion: If you can see green-blue corrosion on pipes, especially at joints, it’s a red flag.
Water damage: Evidence of past leaks could mean current pipes are nearing the end of their lifespan.
Old age: If your home was built before the 1980s and still has its original pipes, replacement is likely overdue.

Copper Pipe Replacement Options

If you’re ready for a change, you’ve got a few piping options:

PEX (cross-linked polyethylene): Flexible, affordable, and easier to install, especially in tight spaces.
CPVC (chlorinated polyvinyl chloride): Rigid like copper, but resistant to corrosion and chemical damage.
New copper piping: A good choice for sections of your plumbing that require heat resistance or durability.

Each has its pros and cons. A professional plumber can guide you based on your home’s needs, local code, and budget.

Can I Replace Just Part of the System?

Yes. If only some sections are damaged or showing signs of age, a partial copper pipe replacement might work for now. However, if leaks or corrosion are showing up in multiple spots, it’s usually better and more cost-effective to replace the entire plumbing system.

How Much Does It Cost to Replace Copper Pipes?

The cost to replace copper pipes varies depending on the size of your home, how much drywall needs to be removed, and the type of piping you choose. While repiping can be a big investment, it can add value to your home and give you peace of mind.

Here’s a visual representation of the average cost to replace copper pipes, comparing common piping materials like PEX, CPVC, and Copper.

Benefits of Replacing Old Copper Pipes

Better water pressure
Cleaner, safer drinking water
Fewer leaks and repairs
Improved home value
Peace of mind knowing your plumbing system is up-to-date

Need Help with Copper Pipe Replacement?

Still wondering, should I replace copper pipes in my home? It’s best to consult with an experienced plumber who can inspect your system and give honest advice. Whether you’re seeing warning signs or just want peace of mind, Derks Plumbing is here to help.

We offer expert sewer line maintenance and repair, repiping services, and honest guidance for homeowners across Los Angeles. Contact us today for a full inspection or a free estimate on your pipe replacement project.

Visit Derks Plumbing Company Inc. to learn more about our repiping and plumbing services.

FAQs – When to Change Out Copper Refrigerant Lines

1. How long do copper refrigerant lines last?

Copper refrigerant lines can last 20–25 years if properly installed and maintained. However, corrosion, leaks, or physical damage can shorten their life.

2. What are the signs I need to replace refrigerant lines?

Look for oil stains around your AC unit, poor cooling performance, hissing noises, or visible cracks and corrosion on the air conditioner copper lines.

3. Can I reuse old refrigerant lines with a new AC system?

It’s not always a good idea. If the hvac refrigerant line is old, damaged, or the new unit uses a different refrigerant type, it’s safer to replace the lines.

4. Is it expensive to replace refrigerant lines?

The cost can vary but typically ranges between $200 to $700 depending on line length, accessibility, and refrigerant type. Full replacements during new installs can cost more.

5. What causes copper refrigerant lines to go bad?

Corrosion, pinhole leaks, UV damage, and improper installation are common causes of failure in refrigerant lines.

6. Can damaged refrigerant lines affect my cooling system?

Absolutely. Leaking or clogged lines can reduce cooling, raise energy bills, and even cause compressor failure if left unchecked.

7. Should I hire a professional for refrigerant line replacement?

Yes. Handling refrigerant requires certification, and replacing air conditioner copper lines needs technical skill to ensure pressure balance and proper sealing.