Plumbing: it's the silent workhorse of our homes, delivering life-giving water and whisking away waste. When it works, we barely notice it. But when it doesn't, it quickly becomes the loudest and most frustrating problem in our lives. While PEX (cross-linked polyethylene) piping has become a popular alternative to copper and CPVC for its flexibility and ease of installation, even the mighty PEX isn’t immune to issues. Let's dive into the common problems that can plague Apollo PEX systems, helping you understand what to look for and how to tackle them.

Why All the Fuss About Apollo PEX?

Apollo PEX is a widely used brand of PEX tubing and fittings. It's known for its affordability and availability at big box stores. Because of its wide distribution, Apollo PEX is frequently used in DIY projects and by some professional plumbers. While PEX, in general, offers benefits, Apollo PEX, specifically, has been the subject of some concerns. Knowing these concerns beforehand is key to preventing headaches down the road.

The Leaky Truth: Common Apollo PEX Problems

Let's get down to the nitty-gritty. What are the most frequent issues people encounter with Apollo PEX systems?

  • Fittings Failures: This is arguably the biggest and most talked-about issue. Apollo PEX systems often use brass fittings, which, under certain water conditions, can be susceptible to dezincification. Dezincification is a process where the zinc leaches out of the brass, weakening the fitting and eventually leading to leaks. The fitting literally crumbles from the inside out. This is particularly prevalent in areas with aggressive water chemistry (low pH, high chloride levels, or high levels of dissolved oxygen).

  • Creep and Cold Flow: PEX, being a polymer, is subject to creep and cold flow. This means that under constant pressure, the material will slowly deform over time. While all PEX exhibits some creep, the quality of the PEX and the type of fitting used can influence the rate. Over time, this deformation can cause connections to loosen, leading to leaks, especially at fittings that rely solely on mechanical compression.

  • Incorrect Installation: PEX is relatively easy to install compared to copper, but that doesn't mean it's foolproof. Improper crimping, over-crimping, using the wrong tools, or failing to support the tubing correctly can all lead to leaks and premature failures. A common mistake is not crimping the PEX ring enough, resulting in a loose connection.

  • UV Degradation: PEX is sensitive to ultraviolet (UV) light. Prolonged exposure to sunlight can cause the PEX to become brittle and crack. This is especially important to consider if any portion of your PEX plumbing is exposed outdoors. Always use PEX that is specifically rated for outdoor use, and even then, consider providing additional shielding from direct sunlight.

  • Rodent Damage: Mice and rats love to chew on PEX tubing! The soft plastic is easy for them to gnaw through, creating leaks and potential water damage. Protecting your PEX from rodents is critical, especially in attics, crawl spaces, and basements.

  • Freezing: While PEX is more freeze-resistant than copper, it's not immune to bursting. If water freezes inside PEX tubing, the expansion can still cause it to crack, especially at fittings. Proper insulation is essential in areas prone to freezing temperatures.

Identifying Potential Problems: What to Look For

Catching problems early can save you a lot of headaches and water damage. Here are some telltale signs that your Apollo PEX system might be in trouble:

  • Water Stains: This is the most obvious sign. Look for water stains on ceilings, walls, or floors near plumbing runs.
  • Dripping Sounds: Listen carefully for any dripping sounds, especially in areas where pipes are concealed.
  • Low Water Pressure: A sudden drop in water pressure could indicate a leak somewhere in the system.
  • Greenish-Blue Stains on Fittings: This is a sign of corrosion on brass fittings, potentially indicating dezincification.
  • Visible Cracks or Bulges in PEX Tubing: Inspect the exposed PEX tubing for any signs of damage.
  • Water Meter Running When All Fixtures Are Off: This is a strong indication of a leak somewhere in your plumbing system.

Fixing the Leaks: Solutions and Prevention

Okay, you've identified a problem. Now what? Here's a breakdown of common solutions and preventative measures.

  • Replacing Fittings: If you suspect dezincification, replace the brass fittings with PEX-compatible polymer fittings. These are more resistant to corrosion and offer a more reliable connection.
  • Proper Crimping: Ensure you're using the correct crimping tool for the size of PEX you're working with. Always double-check your crimps with a go/no-go gauge to ensure they're within the proper tolerance. If in doubt, consult the manufacturer's instructions.
  • Using PEX-A Expansion Fittings: PEX-A, when used with expansion fittings, creates a very strong and reliable connection. While more expensive upfront, the increased reliability can be worth it in the long run.
  • Supporting the Tubing: Properly support the PEX tubing with hangers every few feet to prevent sagging and strain on the fittings.
  • Protecting from UV Light: Insulate or shield any exposed PEX tubing from direct sunlight. There are also UV-resistant PEX options available.
  • Rodent Proofing: Seal any potential entry points for rodents and consider using rodent-resistant PEX sleeves or wraps.
  • Insulating Pipes: Insulate pipes in unheated areas to prevent freezing.
  • Water Treatment: If you have aggressive water chemistry, consider installing a water softener or pH neutralizer to protect your plumbing system. A water test is highly recommended to determine your water's specific properties.
  • Consider a Manifold System: A PEX manifold system allows for individual shut-off valves for each fixture. This makes it easier to isolate leaks and perform repairs without shutting off the entire water supply.

Is Apollo PEX "Bad"? The Great Debate

The question of whether Apollo PEX is inherently "bad" is complex. The reality is that any plumbing system, regardless of the material, can fail if not installed correctly or if subjected to adverse conditions. The primary concern with Apollo PEX stems from the potential for dezincification of the brass fittings, which is exacerbated by aggressive water.

However, properly installed Apollo PEX with appropriate fittings in areas with suitable water chemistry can perform adequately. The key is to be aware of the potential issues and take preventative measures.

Many plumbers are moving away from brass fittings altogether due to the risk of dezincification, regardless of the PEX brand. Polymer fittings and PEX-A expansion systems are becoming increasingly popular for their reliability and resistance to corrosion.

When to Call a Professional

While many PEX repairs can be tackled as DIY projects, there are times when calling a professional plumber is the best course of action:

  • Extensive Leaks: If you have a major leak that's causing significant water damage, call a plumber immediately.
  • Complex Plumbing Systems: If you're unfamiliar with plumbing or the plumbing system is complex, it's best to leave the repairs to a professional.
  • Code Compliance: Plumbing work must comply with local building codes. A professional plumber will ensure that your repairs are up to code.
  • Water Heater Connections: Always call a professional for any repairs or modifications to your water heater connections.

Frequently Asked Questions

  • What is dezincification? Dezincification is the process where zinc leaches out of brass, weakening the fitting and leading to leaks, particularly in aggressive water conditions. It's a major concern with some brass fittings used in PEX systems.

  • Can I use copper fittings with PEX? No, copper fittings are not compatible with PEX. You must use fittings specifically designed for PEX tubing.

  • How often should I inspect my PEX plumbing? It's a good idea to visually inspect your PEX plumbing at least twice a year, looking for any signs of leaks or damage. Pay particular attention to fittings.

  • What is PEX-A? PEX-A is a type of PEX tubing that is more flexible and can be expanded to create connections. It is often considered a more reliable system than PEX-B or PEX-C with crimp fittings.

  • Is all PEX tubing the same? No, there are different types of PEX tubing (PEX-A, PEX-B, and PEX-C) with varying properties. They require different fitting types and installation methods.

The Bottom Line

Apollo PEX can be a viable plumbing option if installed correctly and used with appropriate fittings in suitable water conditions. Being aware of the potential issues and taking preventative measures is crucial for ensuring a long-lasting and leak-free plumbing system. If you are experiencing issues, replacing brass fittings with more modern polymer alternatives is a great first step.