What typically needs to be done
- Winterizing usually means shutting off the cooler water supply, draining the supply line and reservoir/pan, and removing standing water that could freeze.
- Pads and the cabinet are cleaned as the manufacturer recommends, the drain is left in the correct winter configuration and the unit is protected with the proper cover/damper arrangement.
- Roof-mounted water lines and fittings are checked for exposed sections that need draining or protection.
What you can check or prepare yourself
- Identify the cooler water shutoff before the first hard freeze and confirm it actually isolates the cooler.
- If the unit is safely accessible, verify the pan is empty after draining and there is no slow refill from a leaking valve.
- Make sure interior dampers/covers are configured the way the cooler manufacturer specifies so cold drafts are controlled.
Step-by-step reminder
- Shut off the water supply to the cooler.
- Drain the water line and reservoir as the manufacturer directs.
- Clean debris, inspect the drain and weatherize the unit appropriately.
Roof-mounted units may require a professional if safe access is not available.
Before you start
Review the manual for the exact appliance, system or material in your home before opening panels, disconnecting utilities, changing settings or using chemicals. Model-specific procedures and local installation details can differ from a general guide. Shut off power, water or fuel only when the manufacturer procedure calls for it and you are comfortable identifying the correct control. Stop if the condition you find is different from what is described here.
When to bring in a professional
The homeowner checks above can help you understand the condition of the system and prepare for service, but the higher-risk portion may require specialized tools, safe access, combustion/electrical knowledge, refrigerant work, pressure equipment or a qualified inspection. Use the typical-work list to understand what a proper service visit should cover, and hire the appropriate professional for work outside normal homeowner access.
This guide is general information, not a home inspection or a guarantee that a procedure is suitable for your specific equipment or conditions. Follow manufacturer instructions and applicable codes, stop if anything appears unsafe or different from the guide, and use a qualified professional when appropriate. Read the site terms and limitations.