If you’re reading this, chances are you’re dealing with low water pressure in your shower and looking for a fix. One of the most common ways to increase water flow is by removing the shower head flow restrictor. Popular shower head models from brands like Delta, Kohler, and Moen often include these restrictors to comply with water conservation regulations. But what exactly is a flow restrictor, and what does it do? Is it safe to remove? How can you do it without damaging your shower head?
In this guide, we’ll break it all down. You’ll learn the purpose of flow restrictors, get a step-by-step removal guide, and discover what changes to expect afterward. Plus, we’ll explore alternative solutions in case removing the restrictor isn’t the best option for you. By the end, you’ll have all the information you need to decide if this fix is right for your shower.
What’s a Shower Head Flow Restrictor
A shower flow restrictor, or simply put “flow resistor,” is a device that is used to control the flow of water through an outlet (e.g., your shower head). It is also known as a flow regulator or flow controller. A flow resistor is designed to allow water to flow through it at a constant rate (in the US, it’s set around 2.5 GPM or less).
The science behind it is pretty simple. Inside your shower head, the restrictor uses a small valve that automatically adjusts its opening size. When water pressure increases, the restrictor narrows the passage, and when the pressure drops, it opens wider – all to maintain that consistent flow rate you experience.
Flow Restrictors and Regulations
In the past, water restrictors were not common in showerheads. The 2.5 GPM standard (you now know) came about through the Energy Policy Act of 1992. Since then, some states have adopted even stricter limits, like California’s 1.8 GPM maximum. And it’s not just showers – similar restrictors are used in bathroom faucets (typically 1.0-2.2 GPM) and kitchen fixtures or pipes.
While these devices are great for conserving water usage and energy, especially in high-pressure areas, many people find the regulated flow rate less than satisfying. That’s why some homeowners consider removal – though it’s worth noting this could put your shower out of compliance with plumbing codes.
Before you decide to remove yours, let’s look at some simple checks that might improve your shower’s performance while keeping the restrictor in place.
Simple Checks You Should Try Before Removing
Before you start taking apart your shower head, let’s make sure the flow restrictor is actually the problem:
- Run multiple faucets at once. If they all show weak pressure, you might have a whole-house water pressure issue
- Check if both hot and cold water have low pressure. If it’s just hot water, your water heater might need attention
- Ask your neighbors if they’re experiencing similar issues. If they are, it could be a municipal water supply problem
Source: Delta.com
How to Remove a Shower Head Flow Restrictor
Removing a shower head flow restrictor is a simple yet effective way to improve your shower’s water pressure. Flow restrictors are designed to limit water usage, but if you’re looking for stronger water flow, removing it is an easy DIY project. Follow these step-by-step instructions to get started.
Step 1: Gather the Tools You’ll Need
Before you begin, gather the necessary tools:
- Adjustable wrench or pliers
- Small flathead screwdriver
- Rag or cloth (to protect the shower head)
- Vinegar (optional for stubborn restrictors)
- Needle-nose pliers (optional for tight or clogged restrictors)
Having everything ready will help you complete the task efficiently.
Step 2: Safely Remove the Shower Head
To avoid damaging the shower head, wrap a small rag or cloth around it. This protects the surface and helps you grip it better.
Next, use an adjustable wrench to unscrew the shower head by turning it counterclockwise. If it’s too tight, apply some extra pressure, but be careful not to scratch or crack the head.
Pro Tip: If the shower head is very tight, a rubber strap wrench can provide better grip without damaging it.
Step 3: Find the Flow Restrictor Inside the Shower Head
Once the shower head is off, look inside the opening where it connects to the shower arm. You’ll typically see a rubber gasket or washer.
Carefully remove the washer with a small flathead screwdriver. This will expose the flow restrictor.
Note: Depending on your shower head model, the restrictor may be in different places, but it’s usually just behind the rubber washer.
Step 4: Identify and Remove the Flow Restrictor
The flow restrictor is a small, round plastic piece, often colored white, blue, red, or green. It has small holes or slits in the center to limit water flow.
Gently pry it out using a flathead screwdriver or needle-nose pliers. Be careful not to damage the surrounding components.
Step 5: Deal with Stubborn or Clogged Flow Restrictors
If the restrictor is hard to remove or appears clogged with mineral buildup, try soaking it in vinegar for about 30 minutes. Mix equal parts water and vinegar to dissolve any deposits.
After soaking, use pliers to gently pull the restrictor out.
Bonus Tip: Vinegar also works great for cleaning shower heads and removing mineral buildup.
Step 6: Check and Replace the Rubber Washer
After removing the restrictor, inspect the rubber washer. If it’s cracked or worn out, replace it with a new one. This ensures a proper seal when reattaching the shower head.
Tip: You can find replacement washers at most hardware stores or online.
Step 7: Reassemble and Reattach the Shower Head
Once everything is in place, it’s time to reassemble. Put the rubber washer back into the shower head and make sure it’s seated properly.
Screw the shower head back onto the shower arm by hand. Once it’s snug, use your wrench to tighten it a little more, but avoid over-tightening.
Pro Tip: Hand-tightening first ensures proper alignment and prevents cross-threading.
Step 8: Test Your Shower for Improved Water Pressure
Turn on the water and test your shower. With the flow restrictor removed, you should notice a significant boost in water pressure. Your shower should feel stronger and more refreshing.
Bonus Tip: If the water pressure still seems low, check for other obstructions like mineral buildup in the shower arm.
Why Remove the Flow Restrictor?
Removing the flow restrictor increases water pressure, giving you a better shower experience. It’s a quick and simple DIY fix that can save you time during your daily routine.
What Happens After Removing the Water Flow Resistor?
If you followed the steps listed above carefully, then you should have successfully removed your water flow restrictor, and with that comes better flow. But that isn’t the only change you’ll experience. Here are a few changes you should brace yourself for:
Your Monthly Water Bills May Increase
First up is a higher water bill. With the flow restrictor gone, you’ll likely use significantly more water during each shower. A standard shower head with a restrictor uses about 2.5 gallons per minute – without it, that number could jump to 5-8 gallons per minute. Over a month of daily showers, this difference could add anywhere from $10 to $30 to your water bill, depending on your local water rates.
A Few Important Considerations
Keep in mind that removing the restrictor means your shower head won’t meet federal standards or local laws anymore. This might become an issue if you’re selling your home or having plumbing work inspected, especially in states with strict water conservation laws like California. Plus, it typically voids your showerhead’s warranty.
Conclusion
Removing the shower head’s flow restrictor will cause a stronger water flow, but it comes with important trade-offs. There’ll be a significant increase to your monthly bills (adding around $10-30) since you probably now use double or triple your water consumption due to the increased pressure. Plus, your shower head will no longer meet federal standards, which could matter during home inspections or in states with strict local regulations.
Instead of removing the restrictor, consider upgrading to a high-pressure spray. These modern shower heads work within the 2.5 GPM limit while providing excellent water pressure. For whole-house pressure issues, you might want to look into pressure-boosting systems – either an electric pump system or pressure-regulating valves.
These alternatives may cost more initially, but they’ll maintain your warranty and keep you within regulations while giving you the shower experience you’re looking for.
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FAQ
Is it illegal to remove shower head flow restrictor?
Removing a shower head flow restrictor may violate local plumbing codes, especially in areas with strict water conservation laws like California. While not typically illegal for personal use, it could lead to higher water bills and non-compliance during home inspections or sales.
Paul Wilson is a highly skilled plumber with over ten years of experience in the industry. He holds an IDPH license and takes pride in his ability to tackle many plumbing issues and successfully complete even the most challenging projects.
