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

Choosing the right pipes for your home can be confusing. PEX and copper are two popular options. This article compares them to help you decide what’s best for your house. Keep reading to learn more!

Overview of Copper and PEX Piping

Copper piping, known for its long-standing presence in the plumbing sector, serves as a durable option for water distribution systems. The material’s natural resistance to corrosion and ability to withstand high temperatures have made copper pipes a traditional choice for both hot and cold water lines.

Soldering copper ensures secure connections, but this process requires skilled labour and thus increases installation costs.

On the other hand, PEX piping (cross-linked polyethene) offers a modern alternative with notable advantages such as lower costs and easier installation. This flexible plastic tubing can be quickly laid out in homes without the need for soldered joints or crimp fittings, reducing labour costs significantly.

Additionally, PEX is resistant to corrosion and mineral buildup, ensuring smoother water flow over time without the maintenance headaches often associated with copper tubing.

Key Differences Between Copper and PEX Piping

Copper and PEX piping offer different benefits for plumbing systems, from how they handle hot water to their resistance against corrosion. While copper pipes may corrode over time and require a professional plumber for installation, PEX tubing is more flexible, making it easier to install in tight spaces like crawl spaces or basements.

Installation and Maintenance

Installing PEX piping comes at a lower cost and is simpler than setting up copper pipes. Professionals often prefer to work with PEX due to its flexibility, which allows for easier manoeuvring through walls and tight spaces without needing numerous joints or fittings.

This aspect significantly cuts down on installation time and labour costs. Additionally, the material’s resistance to acidic water adds an advantage in maintenance over time.

For copper piping systems, a professional plumber might have to use torches for soldering joints together, making the process more complex and time-consuming. Copper also requires protection against corrosion if used in areas with hard water or acidic soils.

Regular plumbing maintenance checks are essential for both types of pipes to prevent issues like leaks or corrosion damage from escalating. Maintenance practices differ slightly between the two; while copper may demand more attention to prevent corrosion, PEX needs monitoring for potential rodent damage in inaccessible spaces like basements or crawl spaces.


Copper piping holds a reputation for durability and has served in homes for many years. Its strength allows it to withstand high pressures and temperatures, making it a reliable choice for water pipes from the kitchen sink to the washing machine.

This material resists corrosion over time, which means it can last decades without needing replacement.

PEX piping offers a different kind of durability. It doesn’t rust or suffer from mineral buildup inside the tubes, qualities that extend its life span significantly. This type of pipe adjusts well to freezing and thawing cycles without damage, perfect for radiant floor heating systems and eco-friendly green building projects.

PEX’s flexibility also reduces the chance of bursting under pressure, ensuring long-lasting performance in various climates.

Environmental Impacts

PEX piping stands out for its resistance to corrosion and mineral build-up, which significantly lowers the risk of water contamination. Its immunity to electrolysis further helps to prevent water leaks that could harm the environment.

These features make PEX a more eco-friendly option for home plumbing by reducing potential waste.

On the other hand, certain environmental challenges accompany copper piping due to its vulnerability to corrosion from high acidity levels in water. This susceptibility can lead to leaks and possible environmental contamination, highlighting concerns regarding its long-term sustainability.

Copper’s issues with acidity not only pose risks for water quality but also emphasize the importance of choosing building materials that minimize harmful impacts on our surroundings.


Choosing between copper and PEX piping often comes down to budget considerations. Copper pipes cost about three times more than their PEX counterparts. Specifically, 1/2-inch SharkBite PEX tubing is roughly one-third the price of copper pipe, making PEX a significantly cheaper option for those looking to save money on materials.

Labour costs also play a big role in financial comparison. Installing copper pipes demands higher labour fees due to its more complex installation process, which involves soldering and dealing with compression fittings or clamps.

On the other hand, PEX piping can be installed much quicker and easier, using tools like crimp tools or a clamp, reducing overall project costs. With copper running at $2 to $8 per linear foot and being 66 per cent costlier than PEX, homeowners seeking an affordable yet durable solution might find PEX more appealing.

Pros and Cons of Copper Piping

Copper piping offers a reliable option for those looking for durability and corrosion resistance. On the downside, it might strain your budget more than alternatives like PEX due to higher material and installation costs.


Copper piping stands out for its durability and longevity. It resists corrosion, which makes it a reliable choice for plumbing that lasts many years. This characteristic is especially important in areas with aggressive water conditions that can degrade other materials quickly.

Additionally, copper’s ability to withstand high temperatures adds to its appeal for hot water lines, ensuring the system remains efficient and safe over time.

PEX piping offers several advantages as well, notably its flexibility and ease of installation compared to traditional copper pipes. Its design allows for fewer connections needed during setup, reducing potential leak points and installation costs.

PEX is immune to corrosion and mineral build-up, making it highly resistant to damage over time. The material also excels in colder climates by being more resistant to freezing temperatures than copper, further preventing pipe bursts and maintaining efficiency in heat distribution throughout the home.


One key downside to copper piping is its higher price tag compared to PEX pipes, making initial installations more costly for homeowners. This cost difference can be significant, especially in large projects or full home renovations.

Also, copper’s lower corrosion resistance means that it might start showing signs of rust and deterioration over time which could affect water quality and require repairs or replacements sooner than expected.

Copper pipes can crack if the water inside them freezes and expands, a major concern for houses in cold climates. This susceptibility adds an extra layer of worry for residents who might face unexpected plumbing issues during winter months.

Additionally, while copper is recyclable, its production process is not as eco-friendly as alternatives like polybutylene used in manufacturing PEX pipes – another aspect where copper falls short.

Pros and Cons of PEX Piping

PEX piping has gained popularity in modern plumbing projects for its flexibility and ease of installation. Its unique properties have positioned it as a favourable alternative to traditional copper piping. Here are the pros and cons of choosing PEX for your home.


  1. Easy and Fast Installation: PEX pipes stand out due to their ease of installation. Plumbers can quickly run these flexible pipes through walls and floors, significantly reducing labour time and costs.
  2. Cost-Effective: Compared to copper, PEX is more affordable. This cost efficiency extends from cheaper materials to reduced labour expenses during installation.
  3. Durability: Resistant to corrosion and mineral buildup, PEX piping eliminates concerns about long-term damage that can affect metal pipes. It also does not suffer from electrolysis, a process that can weaken copper over time.
  4. Flexibility in Cold Weather: Unlike copper, PEX piping is less likely to crack if the water inside freezes and expands. This resilience against freezing reduces the risk of burst pipes during cold spells.
  5. Energy Conservation: As an excellent insulator, PEX conserves energy by minimizing the loss of heat through pipe walls. This feature helps in maintaining the desired temperature of the water being transported.


  1. Not UV Resistant: Direct exposure to sunlight can damage PEX piping, limiting its use strictly to indoor or underground applications.
  2. Cannot Be Recycled Easily: Although some parts of PEX systems can be recycled, the pipes themselves present challenges in recycling due to their composition.
  3. Potential for Contaminants: There have been concerns about water quality with PEX piping as certain chemicals used in its manufacture might leach into the water supply over time.
  4. Limited Lifespan Compared to Copper: Despite its durability against certain conditions like corrosion, overall, PEX pipes may not last as long as well-maintained copper systems which have been known to function effectively for decades.
  5. Perception Issue: Some homeowners and buyers prefer copper due to its traditional appeal and perceived value, potentially affecting property evaluations where PEX is installed.

Choosing between hepex (a brand of PEX) and other types involves considering these factors alongside personal preferences and specific needs of one’s home environment.

Making the Right Choice for Your Home: Copper vs PEX

Choosing the right piping for your home depends on several factors including budget, durability, and environmental impact. Copper pipes have a long history of use in homes due to their corrosion-resistant qualities and durability.

They are known for lasting many years without significant degradation. However, they come with a higher price tag; copper pipes are three times more expensive than PEX due to the cost of metal materials.

On the other hand, PEX piping offers a modern alternative that is less costly and boasts easier installation. Its flexibility reduces the risk of freeze-breakage, making it an attractive option for regions with cold climates.

While copper excels in water supply lines and heating systems because of its strength and resistance to corrosion over time, PEX stands out for its affordability, lower carbon footprint during sourcing and production, as well as ease of installation which saves homeowners both time and money.

The choice between copper and PEX ultimately hinges on what you prioritize: if long-term reliability and being corrosion-resistant matter most to you, then copper might be worth the investment.

But if you’re looking for an economical solution with decent performance that also contributes positively towards sustainability efforts due to its low carbon footprint during production, then opting for PEX could be beneficial.


Deciding whether to use Copper or PEX piping for your home involves weighing their advantages and disadvantages. Copper pipes bring durability and a proven track record, making them suitable for both indoor and outdoor applications.

On the other hand, PEX offers a budget-friendly alternative that is easier to install and maintain over time. Both materials promise longevity, but your final choice will hinge on specific needs like cost, installation preferences, and environmental considerations.

Ultimately, selecting the right piping material ensures a reliable water supply system in your home for years to come.

Discover more about modern plumbing by exploring the role of cast iron in today’s plumbing systems.


1. What is the main difference between Copper and PEX piping?

The main difference lies in the materials: Copper piping is made from metal, while PEX (Cross-linked Polyethylene) piping is a type of plastic. Each material offers unique benefits for home plumbing systems.

2. Is PEX more affordable than Copper for home plumbing?

Yes, generally speaking, PEX piping tends to be more affordable than Copper. It’s also easier and quicker to install, which can save on labour costs.

3. Can both Copper and PEX pipes last a long time in my home?

Both types of pipes are durable, but their longevity can differ based on water quality and environmental conditions. Typically, copper pipes can last over 50 years, while PEX has an estimated lifespan of about 40-50 years.

4. How do I choose between Copper and PEX piping for my house?

Choosing depends on your needs regarding cost, durability against certain environmental factors like freeze resistance (PEX performs better here), taste preference for water (some people prefer copper), and whether you’re doing it yourself or hiring a professional (PEX might be easier for DIY).

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