Can you keep the water in the pool over the winter?
As temperatures drop and days grow shorter, pool owners face the annual dilemma of whether to drain their pool or keep the water in it during the winter months. While some choose to drain the pool to avoid potential damage from freezing temperatures, others wonder if it is possible to leave the water in the pool and simply winterize it. In this blog post, we will explore the pros and cons of keeping water in the pool over the winter and provide guidance on how to properly winterize your pool for the colder months ahead.
Advantages of keeping water in the pool during winter
1. Structural integrity: leaving water in the pool can help maintain the structural integrity of the pool shell. The weight of the water helps counteract the pressure from the surrounding soil, preventing the pool walls from shifting or cracking due to frost heave.
2. Protection against damage: a pool filled with water is less susceptible to damage from freezing temperatures compared to an empty pool. The water acts as a buffer against extreme cold and helps prevent damage to the pool's surface, plumbing, and equipment.
3. Easier opening in spring: keeping water in the pool over winter can streamline the process of opening the pool in spring. Instead of refilling the pool with water and balancing chemicals, pool owners can simply remove the winter cover, clean the pool, and adjust the water chemistry as needed.
Disadvantages of keeping water in the pool during winter
1. Algae growth: without proper maintenance and circulation, stagnant water can become a breeding ground for algae during the winter months. Algae growth can lead to water discoloration, surface coating, and increased chlorine consumption when the pool is opened in spring.
2. Potential equipment damage: freezing temperatures can pose a risk of damage to pool equipment and plumbing if not properly winterized. Water left in the pool can expand when it freezes, putting pressure on pipes, filters, and pumps, potentially causing cracks or leaks.
3. Increased chemical usage: even with the pool covered, water chemistry can still fluctuate during winter due to factors such as sunlight exposure, debris accumulation, and organic contamination. Maintaining the correct chemical balance may require regular monitoring and adjustments throughout the winter months.
4. Risk of liner damage: vinyl liners can be sensitive to damage from freezing temperatures if not properly winterized. Ice expansion and contraction can cause the liner to stretch, crack, or wrinkle, leading to costly repairs or replacement.
Tips for winterizing your pool with water left in
If you choose to keep water in your pool over winter, it is important to properly winterize the pool to minimize the risk of damage and ensure a smooth opening in spring. Here are some tips for winterizing your pool with water left in:
1. Balance water chemistry: test the water and adjust pH, alkalinity, and calcium hardness to the recommended range before closing the pool for winter. Shock the pool with a chlorine-based shock treatment to eliminate residual contaminants.
2. Add winter chemicals: consider adding winter chemicals such as algaecide and stain preventer to prevent algae growth and protect against stains during the winter months.
3. Install a winter cover: invest in a high-quality winter cover for the pool to protect the water from debris, sunlight, and harsh weather conditions. Ensure the cover is securely fastened to prevent it from blowing off or collapsing under snow and ice.
Monitor water level: keep an eye on the water level throughout the winter and top up as needed to prevent damage to the pool skimmer and circulation system.
4. Insulate plumbing: insulate exposed plumbing and equipment to protect them from freezing temperatures. Use pool antifreeze to flush the pipes and prevent water from freezing inside the pipes.
Conclusion
While it is possible to keep water in the pool over winter, careful planning and preparation are required to minimize the risk of damage and ensure proper winterization. By following the tips outlined above and being vigilant about monitoring water chemistry and equipment during the winter months, pool owners can protect their investment and enjoy a hassle-free opening when warmer weather arrives. Whether you choose to keep water in your pool or drain it for winter, proper maintenance and winterization are key to preserving the lifespan and enjoyment of your pool year-round.
