What Type of Pipes Should I Use to Repipe My House? PEX, Copper, or Something Else?

Why Would I Need to Repipe My House?

Before we talk about which pipes to use, let’s understand when you actually need new pipes. Here are the biggest warning signs:

Your Water Looks or Tastes Weird

If your water has a rusty color or tastes like metal, that’s a big red flag. Old pipes (especially galvanized steel or iron ones) can rust from the inside, and that rust ends up in your drinking water. Yuck!

You Have Low Water Pressure

Does your shower feel more like a gentle drizzle than a strong spray? When pipes get old, minerals and rust build up inside them, making the opening smaller. It’s like trying to drink a thick milkshake through a tiny straw—not much gets through!

You Keep Finding Leaks

One leak might just be bad luck. But if you’re constantly calling a plumber to fix leaks in different parts of your house, your pipes are probably telling you they’re tired and ready to retire.

Your Water Bill is Mysteriously High

If your water bill suddenly jumped up but you’re not using more water, you might have hidden leaks in your walls or under your floors.

Your House Has Old Pipes

If your Bay Area home was built before 1970, there’s a good chance it has galvanized steel pipes. These pipes were popular back then, but they only last about 40-70 years. If your home was built between the late 1970s and mid-1990s, you might have polybutylene pipes—and those are a ticking time bomb that should be replaced immediately!

🔧 Pro Tip: Many historic Bay Area homes in San Jose, Palo Alto, and San Francisco have original plumbing from the early 1900s. If you live in one of these beautiful older homes, a repipe isn’t just smart—it’s essential for protecting your investment. Drain and Water has specialized experience working with historic properties throughout Santa Clara and San Mateo Counties, preserving your home’s character while upgrading its plumbing.

What Are My Pipe Options?

Now let’s talk about the three main types of pipes you can choose from: CPVC, Copper, and PEX. Each one has its pros and cons.

CPVC Pipes (The Budget Option for Small Jobs)

CPVC stands for “Chlorinated Polyvinyl Chloride”—basically, it’s a type of plastic pipe.

The Good Stuff:

• It’s cheaper than other options
• It can handle hot water without melting
• It’s easy to work with for small repairs

The Not-So-Good Stuff:

• It gets brittle over time, especially in our Bay Area climate where temperatures can swing
• It can crack or burst as it ages
• It’s not the best choice for repiping your whole house

Best For: Small repairs or replacing a section of pipe, not your entire house.

🔧 Pro Tip: Bay Area homes experience unique temperature fluctuations, especially in areas like Los Gatos and Saratoga where morning fog gives way to hot afternoons. CPVC doesn’t handle these temperature swings as well as other materials, making it a less ideal choice for whole-house repiping in our region.

Copper Pipes (The Traditional Choice)

Copper has been the gold standard for plumbing for decades. You’ve probably seen those shiny orange pipes before!

The Good Stuff:

• Lasts a really long time (50-70 years or more)
• Doesn’t rust like steel pipes
• Naturally fights bacteria
• Increases your home’s value
• Some people prefer it because it’s not plastic

The Not-So-Good Stuff:

• It’s expensive—both the materials and the labor to install it
• Installation takes longer because each joint needs to be soldered (heated and sealed)
• Can develop small holes from “pitted corrosion” caused by minerals in water or soil
• Can fail faster in homes with acidic water or reverse osmosis systems
• Requires cutting into walls and more extensive repairs

Best For: Homeowners who want a traditional, long-lasting solution and don’t mind paying more upfront.

🔧 Pro Tip: Bay Area water quality varies significantly by city. San Jose, Sunnyvale, and Mountain View have moderately hard water with higher mineral content, which can cause pitted corrosion in copper pipes over time. If you’re set on copper, consider having your water tested first. Drain and Water offers free water quality consultations to help you make the best choice for your specific location.

PEX Pipes (The Modern Standard)

PEX stands for “Cross-Linked Polyethylene.” It’s a flexible plastic pipe that’s become the most popular choice for repiping.

The Good Stuff:

• Much cheaper than copper
• Flexible, so it can bend around corners without extra fittings
• Faster to install (sometimes in just one day!)
• Resistant to freezing and bursting
• Doesn’t corrode or develop mineral buildup
• Quieter than metal pipes (no “water hammer” sounds)
• Can be snaked through walls with minimal damage

The Not-So-Good Stuff:

• It’s plastic, which some people don’t like
• Can’t be used outdoors because UV light damages it
• In rare cases, it can split (though this is uncommon with quality installation)

Best For: Most homeowners who want a cost-effective, durable, and quick solution.

🔧 Pro Tip: PEX is particularly ideal for Bay Area homes because it’s earthquake-resistant! Unlike rigid copper pipes that can crack during seismic activity, PEX’s flexibility allows it to move with your home’s structure. Given that we’re in earthquake country, this is a huge advantage that many homeowners overlook.

So, Which Pipe Should I Choose?

Here’s the simple answer: For most Bay Area homes, PEX is the best choice.

Here’s why:

• It costs less than copper (sometimes half the price!)
• It installs faster, meaning less disruption to your life
• It’s durable and will last for decades
• It handles our Bay Area climate and seismic activity well
• It meets all safety standards for drinking water

However, copper might be better if:

• You have a historic home and want to maintain traditional materials
• You have a basement or crawlspace where copper installation is easier
• You’re not concerned about the higher cost
• You prefer non-plastic materials

CPVC is really only good for:

• Small, temporary repairs
• Specific sections of pipe, not whole-house repiping

🔧 Pro Tip: If you’re planning to sell your Bay Area home in the next few years, a PEX repipe offers the best return on investment. It’s a major selling point that shows buyers they won’t have plumbing problems, and it costs significantly less than copper while providing similar longevity. Plus, with Bay Area home prices, any upgrade that prevents future water damage is worth its weight in gold!

What About Polybutylene Pipes?

If your home was built between the late 1970s and mid-1990s, you might have polybutylene (PB) pipes. These are gray, blue, or black flexible pipes that were once popular because they were cheap and easy to install.

Here’s the problem: Polybutylene pipes react badly to chlorine and other chemicals in our water supply. They become brittle and fail—it’s not a question of “if” but “when.”

If you have polybutylene pipes, you need to replace them NOW. These pipes are a disaster waiting to happen and can cause massive water damage when they fail.

🔧 Pro Tip: Many Bay Area homes in Campbell, Cupertino, and Sunnyvale built during the 1980s housing boom have polybutylene pipes. If you’re buying a home from this era, always have a plumber inspect the plumbing before closing. Drain and Water offers comprehensive plumbing inspections that can identify polybutylene and other problematic materials before they become your expensive problem.

How Much Does Repiping Cost?

Let’s talk money. For an average 2,000-square-foot Bay Area home:

• PEX repiping: $4,000 – $8,000
• Copper repiping: $8,000 – $15,000+
• Larger or multi-story homes: $10,000 – $20,000+

Yes, that’s a significant investment. But think about it this way: repiping prevents water damage that could cost tens of thousands of dollars to repair. It also increases your home’s value and gives you peace of mind.

🔧 Pro Tip: Bay Area homeowners can take advantage of financing options to make repiping more affordable. Drain and Water partners with Wisetack to offer flexible payment plans with reasonable rates. Don’t let upfront costs prevent you from protecting your home—ask about financing options that fit your budget.

How Long Does Repiping Take?

• PEX repiping: Often completed in 1-3 days for most homes
• Copper repiping: Usually takes 3-7 days due to more complex installation

The good news? You typically don’t need to leave your home during the process. Professional plumbers work on one section at a time, so you’ll always have access to at least one bathroom and water source.

🔧 Pro Tip: Drain and Water specializes in minimally invasive repiping techniques that reduce wall damage and cleanup time. While other companies might need to open up large sections of your walls, our experienced team uses strategic access points to minimize disruption to your home. This means less drywall repair, less painting, and less stress for you!

Why Choose Drain and Water for Your Bay Area Repipe?

When it comes to repiping your Bay Area home, you want a plumber who:

• Has extensive experience with all types of Bay Area homes (from 1800s historic properties to modern developments)
• Uses the latest techniques to minimize disruption
• Offers transparent pricing and financing options
• Provides warranties on their work
• Has a proven track record with hundreds of satisfied customers

That’s exactly what you get with Drain and Water Plumbing Services.

We’re a local, family-owned business serving Santa Clara and San Mateo Counties, including San Jose, Palo Alto, Sunnyvale, Mountain View, Los Gatos, Cupertino, Menlo Park, Redwood City, and surrounding areas. With a 4.9-star Google rating and 24/7 emergency service, we’re here when you need us.

Our repiping services include:

• Free consultations and water quality assessments
• Detailed estimates with no hidden fees
• Expert recommendations based on your specific home and water conditions
• Minimally invasive installation techniques
• Limited lifetime warranties on our work
• Flexible financing through Wisetack