When cooler weather starts creeping in, it’s time to close your pool for the season. A big part of that process is knowing how to winterize your pool filter properly, along with your pump. By doing this, you can protect your pool filter pump motor from freeze damage and ensure that everything starts up smoothly in the next swimming season.
The exact steps may vary by equipment type, but the basics stay the same. Read on as we share the steps on how to winterize your pool filter properly.
Clean or backwash the filter
Before you shut down the pool for the season, you need to give the filter a full cleaning.
How you clean it depends on the type.
- Sand and DE filters: run a full backwash to flush out dirt.
- Cartridge filters: take the cartridge out and wash it with a hose or a cleaning solution.
Turn off your pool pump
Your safety should always come first, so be sure to shut off your pool filter pump motor and disconnect power before touching any equipment.
Drain all water from the filter
Freezing water expands and can crack filter tanks, so be sure to let all the water escape. You can do this by opening the drain plug at the bottom of the filter, so the water flows out naturally. If your system includes a multiport valve, set it to the ‘winterize’ position when available.
Remove the pressure gauge and drain plugs
Unscrew the pressure gauge and remove any remaining drain plugs. To keep them from getting lost, be sure to store these parts separately in a safe place.
Detach hoses
If your setup includes removable hoses, disconnect them and store them indoors or in a shed. This protects them from freezing temperatures and weather exposure.
Protect or remove valves
Does your filter use a backwash or multiport valve? Consider removing it and storing it inside to prevent cracking.
Lubricate O-rings
Apply lubricant to the filter tank O-ring before storage. This keeps it flexible and helps ensure that it still seals well next season.
Cover or relocate the filter
If your filter stays outside, place a weather-resistant cover over it. Otherwise, you can always move any portable unit to a dry, frost-free area for added protection.
Store small parts safely
Place plugs and gauges, or fittings, in a labeled bag or container so everything stays together for spring startup.
Final reminder
Equipment designs vary, so always check your manufacturer’s manual for model-specific instructions in winterizing your pool filter motor pump. When in doubt, a pool professional can help confirm you’ve covered every step.
Shop pool filters and parts
When swimming season comes, and you find that you need a replacement pool filter or motor pump, look no further. You can shop right here at All Pool Filters 4 Less. We carry a wide selection in stock, so we’re always ready to ship to your address on the very same day or the next business day.
If you need more advice on how to winterize your pool filter properly, don’t hesitate to text us at 954-558-0584. You may also email
