PUR Water Filter Care: Why Ring a Specialist? 

PUR water filters are a delicacy in modern technology.

It’s hard getting used to a brand, but it has been relatively easy for customers worldwide with PUR. Why put in the effort of shifting brands, looking for a different method of drinking the same glass of water, when PUR gives you all in one package?

PUR Water Filter Troubleshooting


However, if your filter has been gushing out subpar performances or your water just doesn’t taste right, it’s probably got to do something with improper installation, damage to the filter, leakages, a loosely installed valve, etc.

But there’s no real reason for concern. These are commonly occurring technicalities that anyone can fix following simple troubleshooting procedures in the comfort of their homes.

Having basic knowledge and following specific steps will rid you of this headache in a flash. First and foremost, do you know what kind of filter you own?

What do experts say about choosing the correct filter? 

“When choosing a home water filter, you should know where your water comes from. This will help determine what type of filter is best for you and your family,” 

Jonathan Yoder, Epidemiologist and Water Emergency Preparedness Coordinator at the U.S. Centers for Disease Control and Prevention

PUR water filters are of two types; Faucet Filters and Filter Pitchers.

Understand the PUR water filters Types


  • Both use similar types of filtration systems.
  • Identical in the price range.


  • Filter pitchers are cheaper.
  • Filter pitchers require filling up each time the tank is empty.
  • Faucet filters have a more upgraded filtrations system.
  • Faucet filters have more room.
  • Faucet filters don’t require refills because the faucet gives unlimited access to clean water.
  • Faucet filters last longer and remove more kinds of contaminants.

There are four kinds of  PUR Faucet Filters, a Basic, a Classic, an Advanced, and a Bluetooth Ultimate Faucet Filtration System.

PUR Filter Pitchers, on the other hand, are of three types: the 7-cup Basic pitcher and the 8 & 11 cup Classic pitchers and dispensers.

Frequently Recurring Issues on a PUR Water Filter

Now that you are done with the basics of filters let’s dive right in and look at some of the frequently recurring issues on a PUR Water Filter and how you can troubleshoot them. 

1. Changing the batteries on PUR Electronic Filter Models

The electronic filters come with an indicator light that blinks when your PUR filter needs a battery change. A flashing red means it’s time to replace and recharge.

Here’s how:

  • Locate the battery chamber on the top of the filter.
  • Take the battery chamber off of the filter’s head.
  • Exchange old AA batteries with new ones.
  • Make sure they are positioned right according to their positive and negative charges.
  • Install them back onto the chamber and put the holder back onto the filter’s head.
  • Look for a flash of red and green for ten seconds after installation; that’ll tell you the job is done.

2. How to know when to change my PUR water filter?

It is advised that you change your water filter every 100 gallons or every three months. Either way, you will know it is time to change the PUR filter when the filter light flashes red, indicating so. 

3. Why is my PUR Water Filter blinking a red light even after changing the filter?

We learned in the previous query that the red light on the filter indicates when to change the filter. But what happens when it still blinks red even though you just installed a new filter?

Don’t sweat yourself; that is probably a sign that contaminants and debris are stuck in the filter signaling the light. Therefore, clean your PUR filter thoroughly before reinstalling it.

The PUR Filter Light & Its Purpose

PUR comes with an intelligent light installed on the filter that indicates the status of your equipment at any given time. If you’ve just begun using the filter, the light will flash green six times.

Every time you exchange the filter cartridge, the light resets. The filter light changes color depending on the variations and modes, indicating the duration of its use and quantity of gallons filtered.

  • GREEN means the filter is in perfect working condition.
  • YELLOW serves as a reminder that a filter change is coming up soon on your calendar.
  • RED, as we know, means an immediate filter change is required to continue using.

4. Why is my PUR Water Filter Light not working?

The most common reason your filter light’s not working is that it is in sleep mode. To make it active again, simply press and hold the reset button for five seconds and let go. A reset should trigger the filter lightly to become active again.

However, if the light is still not working, this will need a more in-depth troubleshooting approach. We will show you how to fix the light depending on the type of faucet mount and the model of your PUR Filter in easy steps.

Vertical Faucet Mount:

  • Uninstall the filter and reinstall it into the equipment again.
  • To ensure the reset button is working, use a finger to use its control inside the chamber manually.

Horizontal Faucet Mount:

  • Take the filter off and put it back on.
  • If the problem persists, uninstall the filter and, using a dry and soft cloth, clean the insides of the equipment carefully and replace it back on.

Fixing the light for models including – PFM400H, PFM400HC, PFM450S, PFM800HX, PFM400HBB, PFM100B, PFM200B, PFM300W, PFM350V, PFM150W

  • Repeat step one from above.
  • Press the reset button for three seconds to make all three lights blink and let go.
  • Use your fingers to pull back the reset button to its original place if it looks stuck and out of place.

5. Why is your PUR Water Filter leaking from the bottom hole?

You’ve Installed It Wrong

Perhaps the most prevalent cause of a water leak in your PUR filter is improper installation. More often than not, we tend to install the filter incorrectly, and hence issues involving leakages, valves, water pressure, etc., occur.

Let us get to the solution for both faucet filters and  filter pitchers:

PUR Faucet Filter

  • Dismantle the aerator and washer from the dispenser.
  • Your PUR Filter comes with multiple adapters.
  • Choose an adapter that fits the size of the tap.
  • Make sure you tighten the adapter.
  • Inspect the washer.
  • Take off the back cover of the PUR filter.
  • Ensure the filter is centered and the O-valve is a snug fit.
  • Reinstall the back cover onto the equipment.

PUR Filter Pitcher

  • Take the filter out and dip it in water setting a timer for fifteen minutes.
  • Create a soapy water solution and rinse the pitcher and dispenser in it thoroughly.
  • After fifteen minutes, place the filter under cold water for fifteen to twenty seconds.
  • Install the filter back into the dispenser tray and twist it clockwise to create a tight seal. A click will indicate it’s tight enough.

Did you allow hot water to pass through?

One of the most frequently occurring complaints from customers involves hot water damage. The temperature of the water passing through the equipment is very crucial to its functionality.

Hot water affects the PUR filter net and filtering components causing leakages and/or unfiltered water to flow through. This not only damages the PUR equipment but can also cause health concerns allowing chemicals like chlorine to be released into the tank.

Therefore, avoid pouring in hot water in PUR Filter Pitchers and not allowing a hot water connection to Faucet Filters.

O-Ring the technician? 

Remember those airtight water bottles you carried to the gym before the pandemic? Ever wondered why water would never leak or temperatures would never drop inside the container? It’s thanks to this technical marvel called an ‘O-ring’ you can go about your workout sessions without worrying about a wet gym bag.

Our PUR Filters come with O-rings, too, and now you understand why their displacement or an incorrect installation can cause leaks.

Therefore, begin by removing the cartridge and placing the O-ring tightly in the middle to ensure a seal. If it’s still the same, it’s time you buy a new O-ring.


  • I’ve bought a new filter, what now?

Before first use, set a timer for five minutes and run cold water through the filter. Coldwater prepares the filter to start working.

  • Reset my PUR Filter

To do a complete reset of your PUR Filter, press the RESET button for five seconds. After five seconds, a green light will flash, and your filter will have gone through a full reset.

  • How do I know where my filter is leaking from?

Instead of going for a topical approach, first, find the specific place from which the filter is leaking. This will save time and ensure you don’t take the wrong step, further deteriorating the condition of the PUR filter.

  • How to avoid leaks?

Make it a habit of replacing the filter cartridge more often than not. Replacing now and then ensures that lesser sediments and contaminants are stuck in the filter.

  • Is running my filter on high pressure okay?

No, high pressure through the dispenser causes damage over time and makes filters prone to leaks. Always run the filter in low to medium pressure to ensure safety.

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