As winter’s chill approaches, preparing your pool for freezing temperatures is essential. Proper winterization ensures your pool remains in top condition and saves you from costly repairs when spring arrives. Here’s a comprehensive guide to help you protect your pool for the cold months ahead.

1. Clean Your Pool Thoroughly

Start by cleaning your pool thoroughly. Remove any debris, leaves, and dirt from the water. Use a pool vacuum, skimmer net, and brush to clean the pool walls and floor. A clean pool prevents algae growth and ensures that chemicals work effectively throughout the winter.

2. Balance the Water Chemistry

Before closing your pool, it’s crucial to balance the water chemistry. Test the water and adjust the pH, alkalinity, and calcium hardness levels. Aim for the following ranges:

  • pH: 7.2 – 7.6
  • Alkalinity: 80 – 120 ppm
  • Calcium Hardness: 200 – 400 ppm

Properly balanced water prevents corrosion and scaling on pool surfaces and equipment.

3. Shocking Will Help Protect Your Pool

Shocking the pool eliminates any remaining bacteria and contaminants. Use a pool shock product and follow the manufacturer’s instructions. This step ensures the water stays clear and clean throughout the winter months.

4. Lower the Water Level

Lower the water level in your pool to below the skimmer. This step is crucial to prevent water from entering the skimmer and freezing, which can cause damage. Use a submersible pump to remove the excess water.

5. Drain and Store Equipment

Drain all pool equipment, including pumps, filters, heaters, and chlorinators. Remove any detachable parts and store them in a dry, frost-free location. This prevents water from freezing inside the equipment, which can lead to cracks and damage.

6. Add Winterizing Chemicals to Protect Your Pool

Add winterizing chemicals to your pool to keep the water clear and algae-free. Use a winter algaecide, pool enzymes, and a metal sequestrant. These chemicals help maintain water quality and protect your pool surfaces from staining.

7. Cover Your Pool

Invest in a high-quality pool cover to protect your pool from debris and freezing temperatures. A solid cover or a safety cover is ideal. Ensure the cover fits securely and is free of tears or holes. Secure the cover with water bags or other appropriate weights to keep it in place.

8. Monitor and Maintain

Throughout the winter, periodically check your pool and cover. Remove any accumulated debris or water from the cover. If you experience heavy snowfall, carefully remove the snow to prevent damage to the cover and pool structure.


Properly winterizing your pool is essential to protect your investment and ensure a hassle-free opening in the spring. By following these steps, you can safeguard your pool from the harsh effects of freezing temperatures and enjoy a clean, well-maintained pool when warmer weather returns. Take the time to prepare your pool now, and you’ll be rewarded with a seamless transition into the next swimming season.  You can contact Colin Irons Pool Service if you would like help.