As temperatures drop, it's crucial to prepare your outdoor-rated water coolers for winter to prevent damage from freezing conditions. Proper winterization ensures the longevity and optimal performance of your hydration equipment.​

Our step-by-step guide will walk you through the process of safely draining and preparing your outdoor water coolers for the cold season. If you have any questions or need direct help, our Technical Services team is here to assist you.​

Step 1: 

Remove front panel of water cooler.

Disconnect cooler from power supply.

If bottle filler has an electronic solenoid valve, leave power on until flushing/draining is complete. Shut off water at water supply valve.​

 

Step 3:

• Disconnect the 3/8″ OD water inlet copper line from the water shutoff valve.
• Remove in-line strainer from the copper tubing if applicable.
• Note that in-line strainer may be located in ¼” OD plastic tubing at cartridge inlet or cooling tank water inlet.

Step 4: 

Using clean compressed air, blow air into the 3/8” OD copper line. At the same time activate the water cooler push button, and continue to blow air until water no longer comes out of the bubbler.

Next activate the bottle filler push button while blowing air until water no longer comes out of the bottle filler outlet.

Need Assistance? Our Tech Dept can help!

Contact OASIS

Contact OASIS

About the Author

OASIS Tech Services

The OASIS Technical Services Department is a team of highly skilled product support experts dedicated to delivering exceptional guidance and service across our hydration solutions. With decades of combined experience in filtration systems, electrical and mechanical design, and installation practices, the team plays a key role in product innovation and customer success.

Their insights reflect real-world applications, troubleshooting expertise, and a deep understanding of how to implement safe, sustainable, and long-lasting hydration systems. Whether supporting distributors, facility managers, or end users, the Technical Services team helps ensure “Water Where You Need It”—with confidence and clarity.