How to Use a Pool Cover to Retain Heat

Warm water makes swimming more enjoyable, extends your swimming season, and saves on heating costs. A pool cover is one of the easiest and most effective ways to reduce heat loss.

Benefits of Using a Pool Cover

• Reduces water evaporation, which cools the pool

• Keeps heat from escaping overnight

• Lowers heating costs by up to 70 percent

• Helps keep debris out of the pool

Types of Pool Covers

Choosing the right type of cover is important for effective heat retention.

Solar Covers

• Made of bubble-like material that traps and transfers heat.

• Lightweight and easy to roll or fold.

• Affordable and effective for most residential pools.

Thermal Blankets

• Thicker than solar covers with better insulation.

• Ideal for colder climates where heat retention is a priority.

• More durable but heavier and more expensive.

Automatic Covers

• Operate with a switch for easy covering and uncovering.

• Offer excellent heat retention and added safety.

• Require professional installation and higher upfront cost.

Step-by-Step Guide to Using a Pool Cover Properly

Step 1: Choose the Right Cover

• Consider your climate and budget when selecting a cover.

• Ensure it fits your pool’s size and shape.

Step 2: Install the Cover

• Lay the cover flat over the surface, bubble side down if using a solar cover.

• Trim edges if necessary to fit around ladders and steps.

• For automatic covers, test the motor and rails for smooth operation.

Step 3: Remove and Store the Cover

• Roll or fold the cover carefully to avoid tears.

• Use a reel for easy storage and handling.

• Keep it clean and dry when not in use to prolong its life.

Step 4: Use the Cover Consistently

• Cover the pool every night or when not in use.

• During the day, remove the cover if you want to let the sun heat the water naturally.

Tips for Maximizing Heat Retention

Maintain the Cover

• Clean the cover regularly to prevent dirt and algae.

• Check for holes or wear and repair promptly.

Manage Water Chemistry

• Balanced water protects both the pool and the cover.

• High chlorine levels can degrade some covers faster.

Use in Combination with a Heater

• A cover keeps heated water warm longer.

• Reduces the workload and energy consumption of heaters.

Advanced Tips for Experienced Owners

1. Use a double-layered thermal cover for extreme cold.

2. Install a windbreak around your pool to reduce heat loss.

3. Monitor water temperature and adjust your routine based on weather conditions.

4. Schedule professional inspections to keep automatic systems in good condition.

Common Mistakes to Avoid

• Leaving gaps around the edges that let heat escape.

• Failing to cover the pool consistently, especially overnight.

• Rolling or folding the cover while it’s wet, which promotes mildew.

• Ignoring maintenance, shortening the cover’s lifespan.

By following these steps, you can use a pool cover effectively to retain heat, save energy, and keep your water comfortable. Consistent use and proper care make a noticeable difference in both your swimming experience and your utility bills.