Articles and Advice

End-of-Summer Pool Closing Tips

With schools back in session and the fall season approaching, homeowners will soon be faced with the annual task of preparing their backyard oasis for the off-season. Closing your pool properly is essential to protect your investment and ensure an easier, cleaner opening next year.

Whether you handle the job yourself or hire a professional, here are some key end-of-summer pool closing tips every homeowner should know:

1. Balance the Water Chemistry

Before shutting down your pool, it's important to test and adjust the water chemistry. A balanced pH, alkalinity, and calcium hardness level prevents scaling, corrosion, and staining during the winter months. Additionally, shocking the pool with chlorine or a non-chlorine alternative helps eliminate any lingering bacteria or algae that could thrive while the pool is covered. Taking the time to treat the water now properly will save you from headaches and costly cleanups in the spring.

2. Clean Thoroughly

Give your pool a deep clean before closing. Skim the surface to remove leaves and debris, vacuum the bottom, and brush the walls to keep algae growth at bay. Pay extra attention to skimmer baskets and the pump strainer, as any buildup left behind can cause problems when you reopen the pool. Think of this step as "resetting" your pool, leaving it fresh and ready for the months ahead.

3. Protect Your Equipment

Your pool's equipment — such as the pump, filter, and heater — requires care before being shut down. Drain any water from the equipment to prevent freezing and cracking. If you have a sand or DE filter, backwash it; if you have a cartridge filter, remove and clean it thoroughly. Store removable parts indoors if possible. Lubricating o-rings and seals will also help keep them in good shape through the colder months.

4. Lower the Water Level

Depending on the type of pool and cover you have, you may need to lower the water level before closing. For most pools, the water should sit just below the skimmer opening to prevent freezing damage. However, some modern pool covers are designed to accommodate a full water level, so always check your cover manufacturer's instructions before draining.

5. Use Winterizing Chemicals

In addition to balancing your pool water, consider adding a winterizing chemical kit. These typically include algaecides, scale inhibitors, and chlorine alternatives that keep water clear and sanitary throughout the off-season. While not mandatory, winterizing chemicals provide an extra layer of protection — especially for pools in regions with harsh winters.

6. Cover It Securely

A high-quality pool cover is essential for keeping out debris, animals, and harsh weather. Ensure your cover fits tightly and is secured with water bags, cables, or anchors, depending on your pool type. A sagging or loose cover can let in dirt, leaves, and even pests, making your spring opening more difficult. For safety, double-check that your cover is strong enough to support the weight of snow or ice if you live in a colder climate.

7. Plan for Spring

Finally, think ahead. Make a quick checklist of what you've done during closing so you'll know exactly where you left off when it's time to reopen. Note any maintenance tasks that may be needed, such as repairing a liner, replacing parts, or upgrading equipment. By preparing now, you'll be ready to dive back in as soon as the warm weather returns.

Closing your pool may feel bittersweet, but doing it properly helps protect your investment and ensures a smooth start to next season. With balanced water, clean equipment, and a secure cover, you'll have peace of mind all winter long.

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End-of-Summer Pool Closing Tips

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