How to purge air from a refrigerator water dispenser video

How to Purge Air from Refrigerator Water Line

Purging air from the water dispenser line is a simple process you can do with just a container and a little patience. You’re essentially forcing water through the line until the air is pushed out—and once the system is primed, normal flow should resume.

Here’s how to do it:

1. Using a container, press and hold the dispenser button for 5 seconds, then release and wait 5 seconds.

2. Repeat this action of 5 seconds on, 5 seconds off, until water starts to flow.

3. As water begins to flow, air may sputter out initially.

4. Continue dispensing water in 5-second intervals with 5-second breaks, for 2 minutes, emptying the container as needed.

5. Once normal flow has been restored, purge the filter following your manufacturer's recommendation.

If the issue was caused by a disruption to your water supply, be sure to follow our steps for cleaning your appliances after a drinking water advisory.

Brand-Specific Tips When Replacing the Water Filter

Each brand has its own quirks when it comes to filter changes, and getting the water flowing again sometimes comes down to knowing those small differences. If your refrigerator water dispenser still isn’t working after purging the line, try these brand-specific troubleshooting tips.

Kenmore

• Ensure the water filter clicks into place.

• Reset the filter indicator light if applicable.

Samsung

• Use diagnostic mode if available to test valve flow.

• Ensure filter housing is fully sealed.

Whirlpool

• Confirm the filter is fully seated.

• Flush at least 3 gallons of water to clear air bubbles.

GE

• Check for frozen water line near the door hinge.

• Allow unit to defrost fully if airflow is blocked.

LG

• Confirm filter compatibility – OEM filters are often required.

• Check for kinks in tubing behind the fridge.

Frigidaire

• Prime the dispenser by filling a pitcher with the lever held down.

• Ensure filter is locked and cap is not loose.

What If Purging Doesn’t Work?

If your refrigerator water dispenser still isn’t working after purging the air, there may be another issue blocking the flow. A few more checks can help you narrow it down before calling for service.

Start by inspecting for a frozen water line—especially if the freezer is set too cold or you’ve had recent temperature fluctuations. Also, test the solenoid valve to see if it’s receiving power and opening properly. You should replace the water valve if it's defective.

In some cases, the filter itself may be defective or incompatible, so trying a second OEM replacement can be worth a shot. If you're unsure which filter to use, the refrigerator water filter finder can help you quickly find the right match.

If you’ve ruled out all the basics, it may be time to dig a little deeper. Start by checking out our DIY refrigerator repair help for step-by-step guides, troubleshooting tips, and part replacement instructions. And if the problem still isn’t clear—or involves electrical components like the control board—you might want to call a service technician for a more advanced diagnosis.

Frequently Asked Questions (FAQs)

Q: How long should I purge the water line after changing the filter?

A: You should dispense at least 2 to 3 gallons of water—or run the dispenser continuously for 3 to 5 minutes—in short intervals. This helps flush out trapped air, clear any carbon dust from the new filter, and ensure the water is flowing cleanly through the line.

Q: My dispenser spits and sputters—why?

A: Spitting or sputtering from the dispenser usually means there’s still air in the line. This is common after a filter change or after installing a new refrigerator. Keep dispensing water until the stream runs smooth and steady. If sputtering continues, recheck the filter installation and look for kinks in the water line.

Q: Should I turn off the water supply to purge air?

A: No—leave the water supply on. You need water pressure to push the air out of the system. Turning off the water will prevent air from being purged and can delay the process.

Q: Do all brands follow the same process?

A: Most major brands (like Kenmore, Whirlpool, GE, Samsung, LG, and Frigidaire) follow a similar purging process. However, there can be slight differences in filter installation or how long to flush water. Always refer to your refrigerator’s manual or brand-specific guidance for the most accurate instructions.

Q: Do I need to reset the filter light after changing the water filter?

A: Yes—most refrigerators with a filter status light require you to reset it manually after installing a new filter. Check your owner's manual for the exact reset procedure. For many models, holding down a specific button (like “Water Filter” or “Reset”) for 3–5 seconds will do the trick.

Q: Can an old or clogged water filter cause low flow or no water?

A: Absolutely. As a filter ages or becomes clogged with sediment, it can restrict water flow to the dispenser. If your refrigerator water dispenser isn’t working—or the flow has slowed noticeably—it’s a good idea to replace the filter. Be sure to use the correct OEM filter for your model, or try our Refrigerator Water Filter Finder to find the right one.

Still need help? Explore more DIY refrigerator troubleshooting tips and repair help.