# How often will I need to refill the Water Reservoir?

> The app will notify you when the water level is running low and the tank needs to be refilled.  However, we estimate the Water Tank will need to be refilled ...

Source: https://eightsleep.kustomer.help/en_us/how-often-will-i-need-to-refill-the-water-reservoir-H1EpdK0Uv

Last updated: 2026-07-15T01:01:34.328Z

**What is Priming, and when does it happen?**

When you're setting up your Pod for the first time, you will need to go through a process called Priming. The Priming process fills the water mat with water, pushes out any air bubbles, and will help keep the Pod running smoothly. 

While installing your Pod on the Eight Sleep App for the first time, you will automatically be guided through the Priming process. For Priming, you'll need about 2L of distilled water. You will be prompted to add distilled water to the _Water Tank_ in the Hub, up to the _Fill Line_. Expect your Pod to Prime 2-3 times during setup.

If you need to access Priming after the setup of your Pod, see how to access it in your App at the bottom of this article. 

  

**Will I ever need to Prime my Pod again after the initial installation?**

The Priming process will only need to happen again when the water reservoir needs to be refilled. 

The Eight Sleep app will conveniently notify you when your Water Reservoir needs refilling. The Pod uses a water presence sensor to monitor the Water Reservoir's level. If it's running low, a "Water Level Low" notification will appear in your Eight Sleep app, prompting you to refill the reservoir up to the Fill Line. 

When this happens you should refill the Pod Water Reservoir by following these steps: 

*   Pull the Water Reservoir out of the Hub using the top handle.
    
*   Twist the lid a quarter turn counter-clockwise to remove it.
    
*   Fill the reservoir to the Fill Line
    
*   Replace and tighten the lid, then return the reservoir to the Hub.
    

If you're receiving frequent refill alerts, it's best to contact our support team at [support@eightsleep.com](mailto:support@eightsleep.com) to investigate and ensure your Pod is functioning optimally.

  

**I got a notification that Priming was complete, but the Pod hasn't stopped priming. What should I do?** 

Leave the App open for 30 seconds or more to allow the Priming session to finish. If it lasts more than an hour, please get in touch with us at [support@eightsleep.com](mailto:support@eightsleep.com)

  

**Where do I find Priming in my Eight Sleep App?**

1.  Tap the main menu located in the top-right corner of the Eight Sleep App
    
2.  From here, click on the image of your Pod
    
3.  Tap on "Maintenance" 
    

Tap on "Prime Pod" and follow the prompts to Prime. Note that you can set your Pod to automatically prime by toggling on Daily maintenance.

Still having trouble? Try [resetting the device](https://eightsleep.kustomer.help/en_us/how-do-i-reset-my-pod-hub--SyyXWML5V). You can always reach us at support@eightsleep.com for further assistance.