Mastering Home Improvement: How to Repipe a House with PEX Explained

Are you considering repiping your house? If so, understanding the benefits and drawbacks of different piping materials is crucial. In this article, we will explore the world of PEX piping and guide you through the process of how to repipe a house with pex using this innovative material.

Repiping a house with PEX has become increasingly popular due to its durability, flexibility, and ease of installation. With PEX, you can say goodbye to the issues of corroded pipes and leaks. Stay tuned to discover the step-by-step process of how to repipe a house with pex, common mistakes to avoid, and when to seek professional assistance.

Whether you’re a DIY enthusiast or looking to hire a plumber , this article will provide you with the information you need to successfully repipe your house with PEX . So let’s get started and transform your plumbing system for the better.

The Facts at a Glance

  • PEX piping is a type of plumbing material with advantages and disadvantages.
  • Before starting a repiping project with PEX, tools and materials need to be gathered and the layout should be planned.
  • The step-by-step guide for repiping a house with PEX includes removing old pipes, installing new PEX pipes, connecting them to fixtures, and testing the plumbing system.

how to repipe a house with pex

What is PEX Piping?

In the world of plumbing, PEX piping reigns supreme. With its array of advantages over traditional materials, it has become a favorite choice for homeowners and plumbing professionals alike. From its remarkable flexibility and durability to its cost-effectiveness, PEX piping has proven itself to be a true game-changer in the industry.

Gone are the days of rigid materials like copper or galvanized steel. PEX piping effortlessly bends and curves around any obstacle, simplifying the installation process. Its ability to withstand corrosion and freezing ensures that it will stand the test of time, providing homeowners with long-lasting peace of mind.

Not only is PEX piping a dream to work with, but it is also a budget-friendly option. Its affordability, coupled with the need for fewer fittings, results in reduced installation costs and a decreased risk of future leaks or maintenance issues. Who wouldn’t want to save money while ensuring a top-notch plumbing system?

So, whether you’re repiping your house or embarking on a new plumbing project, look no further than PEX piping. Its availability, flexibility, durability, and cost-effectiveness make it a clear winner in the world of plumbing. Say goodbye to the limitations of traditional materials and embrace the future with PEX piping.

how to repipe a house with pex

Advantages of PEX Piping

When it comes to plumbing projects, PEX piping stands out for its numerous advantages. One of its key benefits is its resistance to corrosion and mineral build-up, ensuring efficient water flow and pipe integrity without the worry of rust or scale . Another advantage is the simplicity of installation.

With fewer fittings required, not only does it save you time and money, but it also minimizes the risk of leaks. Its flexibility allows for easy maneuvering and fitting around obstacles, making it suitable for various plumbing layouts. Additionally, PEX piping has the ability to expand and contract with temperature changes, preventing pipe bursts in freezing temperatures.

This feature provides peace of mind , particularly in colder climates, and reduces the risk of leaks and damage to the plumbing system. In conclusion, PEX piping offers increased resistance to corrosion and mineral build-up, easy installation, and the ability to withstand temperature changes. These qualities make it a reliable and cost-effective choice for repiping projects.

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Disadvantages of PEX Piping

Repiping a house with PEX piping offers many benefits, but it’s not without its drawbacks. One concern is the potential for chemicals to seep into the water supply over time. Although PEX pipes are generally safe, there have been instances where certain chemicals, like volatile organic compounds (VOCs), have been detected in water that has been in contact with PEX pipes for an extended period.

Another drawback is the limited availability of PEX fittings in certain sizes. While PEX pipes come in various diameters, finding fittings that match specific sizes can be a challenge. This can lead to delays or the need for additional modifications during the repiping process.

Moreover, PEX pipes are susceptible to damage from exposure to UV rays. If installed outdoors or in areas with direct sunlight, the pipes can deteriorate over time. UV rays can make the pipes brittle and more prone to cracks or leaks.

However, it’s important to emphasize that proper installation and maintenance can significantly reduce these issues. Seeking guidance from a professional plumber who can evaluate your unique requirements and recommend the best approach for your repiping project is crucial.

how to repipe a house with pex

7 Steps to Repipe Your House with PEX Plumbing

  • PEX piping is a type of flexible plastic pipe that is commonly used in residential plumbing systems.
  • One of the major advantages of PEX piping is its flexibility, which allows for easy installation even in tight spaces.
  • PEX piping is resistant to corrosion and scale buildup, making it a durable and long-lasting option for repiping a house.
  • Unlike traditional copper or galvanized steel pipes, PEX piping is less prone to freezing and bursting in cold temperatures.
  • When repiping a house with PEX, it is important to carefully plan the layout to ensure proper flow and minimize the number of connections.
  • Before starting a repiping project, you will need a few tools and materials such as a PEX pipe cutter, crimping tool, and fittings.
  • Testing the PEX plumbing system after installation is crucial to ensure there are no leaks and everything is working properly.

Tools and Materials Required

In order to successfully repipe a house with PEX, it is essential to have the necessary tools and materials at hand. Here are the key items you will need:

1. PEX connectors and crimping tools: These connectors are available in various shapes and sizes to accommodate different piping setups. The crimping tools are used to secure the connectors to the PEX pipes, ensuring a secure and leak-free connection.

2. PEX pipe cutter and deburring tool : These tools are crucial for making precise and clean cuts on the PEX pipes. The pipe cutter ensures straight and even cuts, while the deburring tool removes any rough edges, resulting in a seamless and smooth connection.

3. PEX manifold and valves: A PEX manifold acts as a central distribution point for your water supply, enabling efficient water distribution throughout your home. It is equipped with valves that allow you to control the water flow to individual fixtures or areas, providing you with convenient control over your plumbing system. By having these tools and materials prepared, you will be well-equipped for your PEX repiping project.

Always remember to follow proper installation techniques and consult the manufacturer’s guidelines for the specific products you are using. With the right tools and a little know-how, you will soon have a reliable and efficient PEX plumbing system in place.

how to repipe a house with pex

Deciding on the PEX Piping Type

When it comes to selecting PEX piping for your repiping endeavor, there are crucial factors to ponder. Begin by contemplating the temperature and pressure specifications of the piping. Each type of PEX possesses distinct ratings, so opt for one that can accommodate your plumbing system’s demands.

Additionally, take into account the potential for chemical leaching. Certain PEX materials pose a higher risk of transmitting chemicals into the water supply, hence it is imperative to choose a safe material for drinking water. Lastly, factor in the compatibility of the PEX piping with your existing fixtures.

Various types may necessitate different fittings, so select one that can seamlessly connect without any complications. By conscientiously considering these aspects, you can confidently choose the ideal PEX piping for your repiping endeavor, ensuring a secure and efficient plumbing system for your abode.

Step-by-Step Guide: How to Repipe Your House with PEX

  1. Turn off the water supply to the house.
  2. Identify the areas where the old pipes need to be removed.
  3. Use a pipe cutter or saw to cut out the old pipes.
  4. Measure and cut the new PEX pipes to fit the desired lengths.
  5. Insert PEX fittings onto the ends of the pipes and secure them using crimp rings or cinch clamps.

Planning the PEX Repiping Layout

When embarking on the journey of repiping your beloved abode with PEX, it is imperative to ponder upon a multitude of vital factors. Take a moment to delve into the depths of water flow and pressure requirements, for this knowledge will serve as the compass guiding you towards an efficient PEX piping system. Another crucial aspect to ponder is the realm of future maintenance.

While PEX piping boasts durability, it would be wise to grant ample space and easy access to this intricate system. Such foresight shall minimize any potential disruptions and simplify the process of necessary repairs or upgrades. Furthermore, consider the inclusion of a PEX manifold system, an ingenious central hub that graciously bestows the gift of water upon every nook and cranny of your beloved dwelling.

With this system in place, you shall possess the power to effortlessly control and balance the flow of water to each and every fixture, ensuring that no corner of your domicile is left thirsting for more. By meticulously contemplating the intricacies of water flow, spacing, accessibility, and embracing the marvel of a PEX manifold system, you shall be the architect of an efficient repiping layout for your cherished abode. Embrace this path, and be rewarded with a seamless water supply, as well as the ability to effortlessly handle any future maintenance or upgrades that may come your way.

how to repipe a house with pex

Step 1: Removing the Old Pipes

Begin your journey towards a successful repiping project by turning off the water supply. This crucial step ensures a clean and hassle-free removal of the old pipes. Employ the right tools, such as pipe cutters and wrenches, to safely disconnect and extract the outdated pipes, always prioritizing safety.

Dispose of the old pipes and fittings responsibly, minimizing clutter and environmental harm. With these initial steps accomplished, let us now embark on the installation of the new PEX pipes, guiding you every step of the way.

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Step 2: Installing the New PEX Pipes

Mastering the Art of PEX Pipe Installation : A Blueprint for Success Embarking on the journey of repiping your home with PEX pipes requires a delicate touch and impeccable execution. The installation process is a critical juncture that demands your utmost attention. Allow me to guide you through the steps to ensure a flawless outcome.

First and foremost, it is imperative to establish a firm foundation for your PEX pipes. In order to prevent any untoward movement or potential damage, securing the pipes with clips or straps is of utmost importance. This initial step sets the stage for a seamless installation.

Moving forward, the alignment and connection of PEX fittings must be approached with unwavering precision. Thoroughly inspect each fitting and employ the appropriate tools and techniques, such as crimping or cinching, to achieve a steadfast, leak-free union. Every detail matters in this intricate dance.

Prior to the final connection of your pipes to fixtures, a ritual of purification must take place. Flushing the pipes with the utmost diligence serves to rid them of any lingering debris or contaminants that may have accumulated during the installation process. Run water through the pipes for a few moments, allowing the pristine clarity to wash away any remnants of imperfection.

By embracing these steps and embracing the art of precision, your journey towards successful PEX pipe installation will be one of transformative elegance.

how to repipe a house with pex

If you’re considering repiping your house, PEX tubing is a popular and efficient option. Learn how to tackle a whole house re-pipe using PEX in this informative video.

YouTube video

Step 3: Connecting the PEX Pipes to Fixtures

In the intricate dance of connecting PEX pipes to fixtures, precision is paramount. A symphony of proper installation and the right tools must come together to create a watertight connection. Just as a conductor ensures perfect alignment of each instrument in an orchestra, so must you ensure that the pipes align flawlessly with the fittings.

This harmonious union prevents the haunting specter of water leakage and allows the melody of smooth water flow to resonate throughout your home. But the performance does not end there. Once the pipes and fixtures have been united, a final test awaits.

The crescendo of turning on the water reveals any imperfections in the symphony. Listen closely for the sound of leaks or the faint murmur of reduced flow. Should all be well, the symphony continues, and you can proceed with confidence in the rest of your repiping endeavor.

Remember, dear reader, that these steps are the foundation upon which a reliable and efficient plumbing system is built. Let them guide you as you transform your repiped house into a haven of seamless water flow.

Step 4: Testing the PEX Plumbing System

Ensuring the functionality of a newly repiped house with PEX requires thorough testing. Pressure testing helps identify and repair any leaks in the pipes before they become major issues. Flushing the system clears out debris and air pockets, optimizing water flow and preventing disruptions.

Checking fixtures and faucets ensures smooth water flow and desired pressure. Promptly addressing any issues guarantees an efficient PEX plumbing system. By taking these steps, you can have peace of mind and a worry-free experience in your newly repiped home.

how to repipe a house with pex

Did you know that PEX piping is not just used for plumbing? It can also be used for radiant heating systems, snow melting systems, and even in the transportation of chemicals!


My name is Warren and I am a professional plumber licensed and insured in the State of California. I have been in the business for over 10 years and have undertaken small and large projects including bathroom renovation, toilets, garbage disposals, faucets, sinks and kitchen plumbing jobs. This site is based on my experience with toilets. I have installed the best brands and models in all sizes and shapes. I hope this helps you with the unbiased information that you need to make the right decision.


1/2 Common Mistakes to Avoid While Repiping with PEX

Embarking on a PEX repiping project requires utmost care to guarantee success. One crucial error to avoid is inadequately securing and supporting the PEX pipes during installation, as this can result in future damage or leaks. Another mistake to steer clear of is neglecting to flush the new pipes before connecting them to fixtures, which can lead to obstructions or blockages.

Lastly, failing to conduct a pressure test to identify leaks is a common oversight. By evading these errors and adhering to proper procedures, you can enjoy a dependable and efficient plumbing system.

When to Call a Plumber

Indicators That It’s Time to Contact a Plumber Dealing with plumbing problems can be a real headache, but sometimes it’s best to leave it to the experts. Here are a few signs that serve as a clear indication that you should reach out to a professional plumber. First and foremost, if you suddenly experience a significant drop in water pressure or no water flow at all, it’s high time to call a plumber.

This could be a sign of a clogged pipe or a more severe issue with your plumbing system. Don’t hesitate to seek professional assistance to prevent further damage. Secondly, if you detect a foul smell emanating from your drains or witness water backing up in sinks or toilets, it’s absolutely crucial to contact a plumber immediately.

These signs may suggest a sewer line blockage or a problem with your septic system, which requires immediate attention to prevent contamination or property damage. Lastly, when it comes to repiping projects, it is highly recommended to enlist the services of a professional plumber. They possess the necessary knowledge, skills, and experience to efficiently handle complex plumbing systems.

Moreover, they have access to specialized tools and equipment to ensure the job is done right the first time. In conclusion, recognizing the right time to call a plumber is vital in order to prevent emergencies and maintain the proper functioning of your plumbing system. If you notice any warning signs or require assistance with repiping projects, don’t hesitate to seek help.

Remember , it’s always better to be safe than sorry when it comes to your plumbing needs.

how to repipe a house with pex

Comparison of PEX Pipe Types – Tabelle

PEX Pipe Type Material Composition Advantages Disadvantages Recommended Applications Cost Durability Installation Method Compatibility with Fittings Certification Standards
PEX-A Cross-linked polyethylene (PEX) Excellent flexibility, resists freezing and bursting, fewer fittings needed Higher cost, not suitable for outdoor direct sunlight exposure Hot water, cold water, radiant heating Medium Long lifespan, high resistance to corrosion Expansion Compatible with brass, copper, plastic fittings ASTM F876, NSF/ANSI 14, CSA B137.5
PEX-B Cross-linked polyethylene (PEX) Good flexibility, less expensive than PEX-A, resists freezing and bursting Not as flexible as PEX-A, requires more fittings Hot water, cold water, radiant heating Low Long lifespan, high resistance to corrosion Crimping Compatible with brass, copper, plastic fittings ASTM F876, NSF/ANSI 14, CSA B137.5
PEX-C Cross-linked polyethylene (PEX) Good flexibility, less expensive than PEX-A and PEX-B, resists freezing and bursting Not as flexible as PEX-A, requires more fittings Hot water, cold water, radiant heating Low Long lifespan, high resistance to corrosion Cinching Compatible with brass, copper, plastic fittings ASTM F876, NSF/ANSI 14, CSA B137.5

Choosing the Right Plumbing Professional

Choosing the right plumber for repiping your house with PEX is of utmost importance. There are key factors to keep in mind. First and foremost, ensure the plumber has the necessary licenses and certifications.

It is essential for them to possess the skills and knowledge required to handle the repiping project in compliance with regulations. Seeking recommendations and reading reviews can provide valuable insight. Consult friends, family, or neighbors for their suggestions, and explore online review platforms to assess the plumber’s reputation and work quality.

Pay attention to the plumber’s experience and expertise with PEX piping. Repiping with PEX demands specific know-how, so selecting a plumber with relevant experience is crucial. By carefully considering these factors and conducting thorough research, you can secure the services of a qualified, experienced, and dependable plumbing professional.

This will ensure a successful repiping project and grant you peace of mind, knowing your home’s plumbing system is in capable hands.

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how to repipe a house with pex

Similar Posts

To ensure a successful PEX repiping project, it is crucial to steer clear of common mistakes. Here are some key ones to avoid:

1. Inadequately securing and supporting the PEX pipes. Properly securing them is vital to prevent any sagging or damage.

2. Forgetting to flush the new PEX pipes before connecting them to fixtures. Flushing eliminates debris and air pockets that may hinder water flow.

3. Neglecting to conduct a pressure test to detect leaks . Testing the system’s integrity is essential before completing the repiping project. To prolong the lifespan of PEX piping, regularly inspect it for damage or wear, shield it from excessive UV exposure and extreme temperatures.

It is also crucial to understand the different types of PEX fittings and their uses for proper installation and compatibility with existing fixtures . By adhering to these tips and steering clear of common mistakes, you can achieve a successful PEX repiping project and relish the advantages of this resilient material.


In conclusion, this article provides a comprehensive guide on how to repipe a house with PEX piping. We have discussed the advantages and disadvantages of using PEX piping, as well as the tools and materials required for the project. The step-by-step guide walks readers through the process of removing old pipes and installing new PEX pipes, with a focus on connecting them to fixtures and testing the plumbing system.

By avoiding common mistakes and seeking professional assistance when needed, homeowners can successfully complete a PEX repiping project. This article is a valuable resource for anyone looking to upgrade their plumbing system and improve the efficiency and durability of their home. For more helpful articles on plumbing and home improvement projects, we recommend exploring our other related posts.


Should I Repipe my house with PEX?

PEX, which stands for cross-linked polyethylene, is a cost-effective and user-friendly option for repiping. It is a highly durable material that offers resistance against freezing, leaks, and corrosion. With PEX piping, you can confidently use it for both your hot and cold water lines.

Can I replace all my plumbing with PEX?

The most effective and durable solution for the long-term is to replace all the copper pipes in your home with PEX pipes, regardless of the cost. This process entails disconnecting and bypassing the existing copper pipes, and installing new PEX lines throughout the entire house. You have the option to either maintain the current pipe arrangement or switch to a PEX manifold-and-branch system.

Can I do PEX myself?

The crimping method is widely favored by DIY enthusiasts for connecting PEX pipes. To create a secure connection, brass fittings are used, with copper rings encircling the joint. By using a crimping tool, the copper rings are slightly deformed and securely held in place. This technique provides a reliable and straightforward way for DIYers to join PEX pipes.

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