How to Stop Water Hammer from Washing Machine?

Water hammer—a sudden surge of water pressure that creates a banging or thumping noise in your pipes—can be a frustrating problem, especially when it occurs with your washing machine. This phenomenon can not only be an irritant but can potentially harm your plumbing system over time. Understanding how to stop water hammer from the washing machine involves a combination of identifying the root cause, implementing preventative measures, and possibly seeking professional help. In this comprehensive guide, we will cover various aspects of water hammer, including its causes, effects, and solutions.

Understanding Water Hammer

What is Water Hammer?

Water hammer is a hydraulic shock that occurs when a flowing fluid is suddenly forced to stop or change direction. When water is abruptly turned off—such as when a washing machine valve closes—pressure surges back through the plumbing system, creating a loud banging sound. This issue can not only be irritating but may lead to leaks and fixture damage if left unaddressed.

Causes of Water Hammer

There are several root causes for water hammer in a washing machine:

1. High Water Pressure
   • When the water supply pressure to the washing machine exceeds the recommended level (typically above 80 psi), it can lead to excessive vibrations when the water is turned on or off.
2. Quick-Closing Valves
   • Many washing machines come equipped with solenoid valves that open and close quickly. When these valves close too abruptly, they can create a shockwave in the plumbing.
3. Lack of Air Chambers
   • Air chambers are designed to absorb the shock created by water abruptly stopping and can diminish the effects of water hammer. Over time, these chambers may become waterlogged, rendering them ineffective.
4. Loose Pipes
   • If the pipes are not adequately secured, the force of the water can create movement, which might amplify the banging noise.
5. Rust and Corrosion
   • Older plumbing systems that have built up rust or corrosion can exacerbate the impacts of water hammer due to reduced internal pipe diameter.

How Water Hammer Affects Your Plumbing

Potential Damage to Fixtures

Repeated instances of water hammer can lead to several problems within your plumbing system, including:

1. Loose Fixtures
   • The banging can result in loose fixtures, which may eventually lead to leaks.
2. Pipe Damage
   • Over time, the internal pressure changes can weaken pipes, leading to cracks or ruptures.
3. Worn Out Valves
   • The solenoid valves within the washing machine can become damaged due to constant pressure changes, requiring more frequent replacements.
4. Water Leaks
   • As the plumbing system develops weaknesses, leaks can occur in various areas, increasing your water bills and creating potential mold problems.

Impact on the Washing Machine

Water hammer can have several detrimental effects on your washing machine, including:

1. Reduced Efficiency
   • Frequent banging noises can lead to less efficient washing cycles and increased wear on the machine components.
2. Increased Noise Level
   • The noise can be disruptive and may be bothersome in households where a quiet environment is valued.
3. Shortened Lifespan
   • Regular exposure to water hammer can shorten the lifespan of your washing machine, resulting in higher replacement costs in the long run.

Preventative Measures

Checking Water Pressure

One of the first steps in how to stop water hammer from the washing machine is to check the water pressure in your home. Here’s how you can do it:

1. Buy a Water Pressure Gauge
   • You can purchase an inexpensive water pressure gauge at any hardware store.
2. Attach the Gauge to an Outdoor Faucet
   • Turn on the faucet and attach the gauge to check the pressure reading.
3. Evaluate the Reading
   • If the reading is above 80 psi, you may need to take corrective measures.

Installing a Pressure Regulator

If you find that your water pressure is too high, installing a pressure regulator can be an effective long-term solution.

1. What is a Pressure Regulator?
   • A pressure regulator controls the flow of water to ensure that it remains within a safe and manageable range.
2. Where to Install
   • It is typically installed near where the water enters your home, before it reaches the main plumbing system.
3. Professional Installation
   • Consider hiring a professional plumber for installation to ensure it’s set up correctly.

Adding or Recharging Air Chambers

Air chambers act as shock absorbers for your plumbing. If water hammer persists, you may want to recharge these chambers.

1. Locate the Air Chambers
   • These are typically horizontal pipes located near the fixture or appliance.
2. Drain Your Plumbing
   • Shut off the main water supply and open all faucets to drain the system.
3. Recharging Process
   • Once fully drained, close the faucets and turn the water back on. This should refill the air chamber with air, refreshing its functionality.

Pipe Support Installation

If you’ve determined that loose pipes are contributing to the water hammer, consider installing additional supports.

1. Securing Loose Pipes
   • Check the pipes that run to and from your washing machine to ensure they are properly secured.
2. Using Pipe Straps or Clamps
   • Pipe straps or clamps can be used to attach pipes to the walls, offering stability and reducing vibrations.
3. Professional Help
   • In cases where the job appears complex, hiring a plumber may be the best option.

Consider Upgrading Fixtures

Older washing machines may be more susceptible to water hammer due to outdated components.

Why Upgrade?

1. New Technology
   • Modern washing machines often come equipped with better valves that mitigate the effects of water hammer.
2. Efficiency Improvements
   • Newer models generally offer improved water and energy efficiency.
3. Reduced Noise Levels
   • Upgraded designs tend to operate more quietly, eliminating issues with water hammer.

Choosing the Right Washer

When selecting a new washing machine, consider the following factors:

1. Brands Known for Durability
   • Research brands that are recognized for reliability and noise reduction.
2. Consumer Reviews
   • Read consumer feedback for insights into the machine’s performance related to water hammer.
3. Consult a Specialist
   • If unsure, consult an appliance specialist for recommendations that best fit your needs.

Seeking Professional Help

If you’ve tried the above solutions without success, it may be time to call in the professionals.

1. Plumbing Inspection
   • A licensed plumber can inspect your entire plumbing system to identify underlying issues contributing to water hammer.
2. Diagnosis and Repair
   • They may be able to diagnose and repair issues that are not immediately apparent to a homeowner.
3. Expert Recommendations
   • Plumbers can provide tailored solutions based on their findings.

Additional Maintenance Tips

To ensure the longevity of your washing machine and plumbing system, consider the following maintenance tips:

1. Regular Checks
   • Regularly check for leaks, strange sounds, and changes in water pressure.
2. Scheduled Maintenance
   • Schedule routine plumbing checkups to catch issues early.
3. Ensure Proper Drainage
   • Make sure your drainage system is functioning correctly to prevent additional pressure in your pipes.
4. Monitor Water Quality
   • Hard water can lead to mineral buildup that may exacerbate water hammer. Consider installing a water softening system if necessary.

Conclusion

If you’ve been dealing with water hammer from your washing machine, understanding how to stop it is crucial for your plumbing system’s well-being. Whether it involves checking your water pressure, installing a pressure regulator, recharging air chambers, or securing loose pipes, there are multiple strategies available. Upgrading your washing machine or seeking professional assistance can also be viable options. By taking the appropriate measures, you can protect your washing machine from potential damage and maintain a quieter, more efficient home. From simple preventative measures to expert solutions, addressing water hammer promptly can save you time and peace of mind.