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 had subpar performance, or if your water just doesn’t taste right, it probably has something to do 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 problems that anyone can fix following simple troubleshooting procedures in the comfort of their home.

With basic knowledge, the following 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.
  • Both are similar in price.


  • Filter pitchers are cheaper.
  • Filter pitchers require filling up each time the tank is empty.
  • Faucet filters have a more upgraded filtration 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 know the basics of filters, let’s dive right in and look at some of the frequently recurring issues with a PUR Water Filter and how you can troubleshoot them.

1. Changing the batteries on PUR Electronic Filter Models

Electronic filters come with an indicator light that blinks when your PUR filter needs a battery change. A flashing red indicator means that 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 the filter’s head
  • Replace the old AA batteries with new ones
  • Make sure they are positioned right according to their positive and negative charges
  • Install them back into 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?

You should 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.

3. Why is my PUR water filter blinking a red light even after I changed the filter?

In the previous question, we learned that the red light on the filter indicates when to change the filter. But what if it still blinks red even though you just installed a new filter?

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

The PUR filter light and 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 the 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.
  • 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 why your filter light is 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 then let go. A reset should trigger the filter light 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.
  • To ensure the reset button is working, use a finger to manually employ the control inside the chamber

Horizontal Faucet Mount:

  • Take off the filter 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; then replace it

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

  • Repeat step one from above.
  • Press the reset button for three seconds to make all three lights blink; then 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

This is perhaps the most common cause of a water leak in your PUR filter. More often than not, we install the filter incorrectly, causing issues involving leakages, valves, water pressure, etc.

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 out the filter 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 that it’s tight enough.


Did you allow hot water to pass through?

One of the most frequent complaints from customers involves hot water damage. The temperature of the water passing through the equipment is 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 hot water into PUR filter pitchers and do not allow 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 wonder why water would never leak or temperatures would never drop inside the container? It’s Thanks to a technical marvel called an “O-ring,” you can go about your workout sessions without worrying about a wet gym bag.

 PUR filters come with O-rings, too. 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 to buy a new O-ring.


  1. I’ve bought a new filter. Now what?

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

  1. Reset the PUR filter.

To do a full 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.

  1. How do I know where my filter is leaking from?

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

  1. How do I avoid leaks?

Make it a habit of replacing the filter cartridge more frequently. This ensures that lesser sediments and contaminants do not get stuck in the filter.

  1. 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 at low to medium pressure to ensure safety.

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