# How to Winterize the Bottom Drain of a Swimming Pool
Once the summer and pool season is over, pool owners need to winterize their pools in preparation for the colder weather. If you have an in-ground pool, you must also winterize the bottom drain so that it doesn't freeze and crack when the temperature gets below freezing. The winterizing process of the bottom drain is a simple one, especially compared to the rest of the pool.
Things You'll Need
- Threaded plug
Instructions
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Open the valve for the main drain and allow the escaping air to bubble up for about 45 seconds via the air blower. Doing this purges the air from the drain. If the air is left inside the drain, it could cause it to expand when the temperatures reach below freezing.
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Close off the valve to the drain immediately to stop the air from going through the drain after the 45 seconds are up. Turn off the air blower.
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3
Thread the drain plug into the drain opening to block the water from flowing through the drain pipes.
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Previous:
Swimming Pools & Spas
- How to Backwash a Swimming Pool Drain Into the Sewer
- How to Marbelite a Swimming Pool
- How to Drain Pebbles From Swimming Pools
- The Bottom Drain of the Pool Is Leaking
- How to Get the Air Out From Under the Lining of the Swimming Pool
- How to Remove the Swimming Pool Return Outlet
- How to Clarify the Muddy Water in a Swimming Pool
- How to Change a Pool Drain
- How to Cover the Main Drain on a Pool
- Air Bubbles in the Lines of the Swimming Pool
- How to Winterize the Pump and Filter on a Swimming Pool
- How to Get Water Out of the Return Lines of an Inground Swimming Pool
