Which is better, a PEX or copper refrigerator water line?

Author: Miss Aiyana Dicki  |  Last update: Friday, September 19, 2025

Conversely, PEX is much better at handling water with higher acidic levels compared to copper pipes; however, copper pipes are more prone to freezing during the wintertime. This can be a serious issue for older homes with dated plumbing systems.

What is the best line for a refrigerator water line?

Rubber would be a bad choice of line to run to the fridge. Use either copper or polyethylene tubing designated for potable/ culinary water use.

Is PEX better than copper for refrigerator water line?

PEX or PVC Tubing

Plastic tubing is not vulnerable to corrosion, and it resists scale buildup, which helps maintain water quality. Additionally, it is less prone to bursting in freezing conditions compared to rigid materials like copper.

Do plumbers prefer PEX or copper?

Copper is usually preferred for water supply lines and heating systems but plex is most often used for drain or waste lines because copper corrodes over time. Ultimately, it's up to the homeowner to decide where to spend the construction budget.

Is copper or plastic better for a fridge water line?

Go copper for durability as plastic will degrade adn possible cause you a bad leak issue. But the beauty of copper tubing is that the inside of the copper tubing will sort of oxidize or petina, and once it does, it shoudl be sealed an no longer leach into your water.

Fridge Water Line Install DIY

What is the best material for ice maker water line?

A Guide by Dovis Plumbing
  1. Braided Stainless Steel: Reliable and Durable. Braided stainless steel stands out for its reliability and sturdiness. ...
  2. PVC or Plastic: Affordable but Less Durable. Plastic water lines are cost-effective and easy to install. ...
  3. Copper: Durable and Flavor-Neutral.

What are the disadvantages of using copper pipe in water lines?

Copper does have a few disadvantages, though. It has become expensive, can still corrode based on pH levels of water, and in cold climates, frozen water can cause copper pipes to burst. PEX installs quickly, which significantly reduces labor costs.

What is the downside of PEX?

Like any other material, multiple factors could lead to problems with PEX. Some of these factors could be simple over-chlorination of the water running through it or dezincification, which could weaken and break down the fittings used on the piping. Another issue could be the piping failing to pass a pressure test.

Which lasts longer, PEX or copper?

Copper pipes outshine PEX pipes in terms of longevity. On average, copper pipes impressively endure for 50 to 70 years, whereas PEX pipes have an expected lifespan of 30 to 50 years.

Why did plumbers stop using copper tubing?

The major reason for the rise of alternative piping is cost. Copper plumbing piping is more expensive than plastic piping, such as polyvinyl chloride (PVC) or cross-linked polyethylene (PEX). The latter is quickly becoming a standard in many residential applications for its strength and flexibility.

Is it worth replacing copper pipes with PEX?

Better Energy Efficiency – PEX has a lower thermal conductivity rate than copper. As a result, PEX pipes can help keep hot water hotter for longer periods of time. They also produce less condensation on cold water lines, which could lead to fewer moisture-related problems in ceilings and walls.

Does water freeze faster in PEX or copper?

And when it comes to preventing these headaches, PEX pays off. Not only does it add value to the installation because it's more freeze resistant than pipes like CVPC and copper, but it's also superior in every season, cold or not. Whether it's PEX-a, -b or –c, this pipe type is more freeze resistant than rigid pipes.

How long do refrigerator water lines last?

How Often Should You Replace Your Refrigerator Water Line? There's no set time frame for replacing your refrigerator water line, but it's generally a good idea to have it checked every few years. However, if you notice any of the signs listed above, it's a good idea to have the water line inspected as soon as possible.

Is PEX better than copper for ice maker lines?

PEX is typically more cost-effective and easier to install, while Copper is renowned for its durability and recyclability.

Do you need a plumber to install a fridge water line?

Do I Need a Plumber to Install a Fridge Water Line? In most cases, installing a water line to your fridge is a manageable DIY project. The key to success is having the right plumbing supplies and materials to complete the job correctly.

How tight should a fridge water line be?

Run the new supply tube to the back of the refrigerator. Connect the end of the tube to the 1/4-inch water supply fitting on the fridge. Tighten the connection just slightly more than hand-tight using pliers.

Why do plumbers not use PEX?

Material Concerns: One of the primary concerns about Pex plumbing is the material itself. While Pex pipes are undoubtedly flexible, making them easier to install in tight spaces, they are not as durable as traditional materials like copper or even PVC.

Why do plumbers use PEX instead of copper?

PEX pipe is not only cheaper than copper but more durable too. PEX is immune to corrosion and mineral build-up, and it's not affected by electrolysis, which can cause small pinhole leaks in copper piping.

Is PEX or copper better for drinking water?

Copper pipes with lead-free joint materials are the best choice for water pipes. They are long-lasting and won't leach chemicals into your drinking water.

Why is PEX banned in California?

Currently, PEX plumbing is one of the most widely used plumbing systems around the world. It was temporarily banned in California for a while due to concerns about toxic materials but this was later disproven by laboratory tests.

Where not to use PEX?

Our PEX pipe is not suitable for use in areas where the soil is or may become contaminated, including soil used for backfilling. Soil used for backfilling must be free of rocks, debris or any sharp object that may cause damage to the fitting or pipe through impact or abrasion.

Will mice eat pex pipe?

PEX Pipe Is Vulnerable

Rodents Chewing Through PEX Pipe is a common problem in our area. It doesn't matter how old your home is, if you have an attic, you need to watch for rodent damage to PEX Pipe or PVC. If you're hearing rustling noises coming from the attic, it's time to do an inspection.

Why don't plumbers use copper pipes?

The Cons of Using Copper Pipes

Installation costs: Copper is more expensive than other piping materials. Since they're also rigid, you must incur the cost of elbow fittings. The rigidity makes them more challenging to cut and fix during installation. The longer it takes to handle the materials, the more cost you incur.

What are three disadvantages of copper?

Copper wire remains one of the most widely used and reliable materials in electrical systems, thanks to its excellent conductivity, durability, and resistance to corrosion. However, it is not without its challenges, including higher costs, weight, and vulnerability to theft.

What are the disadvantages of PEX pipe?

PEX piping has a maximum bend radius, which can lead to stress on the pipe caused by improper installation. In addition, extreme bends and kinks place a very high local stress on the wall of the pipe, making it more susceptible to oxidative degradation.

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