Pools are a source of relaxation, exercise, and summer fun, but maintaining the perfect water temperature can be a challenge—especially in warmer climates. While most pool owners are familiar with using covers to retain heat during the colder months, there is a growing demand for pool blankets designed specifically to keep water cool. In this in-depth guide, we’ll explore what these cooling pool blankets are, how they work, their benefits, and how you can choose the right one for your needs.
Understanding Pool Blankets
Pool blankets, also known as solar blankets or pool covers, typically come in two main categories: those that retain heat and those that lower water temperature. While the heat-retaining kind functions like a thermal blanket, trapping solar energy to warm the pool, cooling pool blankets operate on entirely different principles.
How Traditional Pool Covers Work
A traditional pool cover is usually made of a thick, bubble-like plastic material that floats on the water surface. The bubbles act as insulators, reducing evaporation and trapping heat from the sun. This effectively warms the pool and extends the swimming season in cooler months.
However, during the summer, when the sun is at its strongest, these same covers can cause the pool to become uncomfortably warm—sometimes even surpassing 90°F (32°C) in certain regions.
Cooling Pool Blankets: A Modern Solution
Cooling pool blankets, sometimes referred to as shade pool covers or cooling solar blankets, are designed to reflect sunlight rather than absorb it. These innovative covers work by limiting the amount of solar radiation that reaches the water, thereby reducing heat gain.
Unlike warming covers that have clear or translucent material with large bubbles, cooling blankets are often darker in color or have a reflective surface to reject the sun’s heat.
How Cooling Pool Blankets Work
Understanding the science behind cooling pool blankets can help pool owners determine whether this product is suitable for their needs.
Reflecting Solar Radiation
The primary function of a cooling pool blanket is to reflect rather than absorb the sun’s rays. These covers often use highly reflective materials—such as aluminized surfaces or white coatings—to bounce sunlight away from the pool. By reflecting UV and infrared rays, the blanket reduces the amount of energy being transferred to the water, which helps maintain a cooler pool temperature.
Evaporation Control with a Cooling Purpose
While many people associate evaporation with cooling, in pool management, this process actually leads to water loss and heat gain. Traditional covers aim to prevent evaporation to retain heat, while cooling pool blankets strike a balance. Some cooling covers are designed with microperforations or breathable patterns that still allow some evaporation, using it to remove heat from the water surface without causing excessive loss of water.
Material Composition and Design Features
Cooling pool blankets differ from traditional solar blankets in several ways:
- They are often made with UV-reflective or light-colored polymer materials.
- The bubble structure, if present, is usually smaller and flatter to reduce heat absorption.
- Some are woven or non-bubbled to reduce trapping heat near the water surface.
The design helps maintain a moderate temperature by blocking a portion of the sun’s energy before it reaches the pool water.
Benefits of Using a Cooling Pool Blanket
Using a pool blanket designed to keep water cool offers multiple advantages beyond temperature regulation.
Comfort and Enjoyment
Swimming in water that’s excessively warm can be uncomfortable and even unsafe for young children and the elderly. A cooling pool blanket ensures the water remains at a pleasant, refreshing temperature, encouraging more frequent use during hot weather. This is especially important for families and athletes who rely on the pool for daily exercise.
Energy Efficiency
Instead of relying on costly pool chillers or misting systems, a cooling blanket offers a more energy-efficient solution. These blankets require no electricity, making them an eco-friendly option for reducing pool temperatures naturally. This helps pool owners reduce their carbon footprint and utility bills.
Water Conservation
Even though some evaporation is used to cool the water, many modern cooling pool blankets are designed to strike a balance between cooling and water preservation. Compared to going uncovered or using evaporation-centric cooling methods, cooling blankets significantly reduce water loss, which is critical in drought-prone regions.
Reduces Chemical Demand
Warmer water promotes algae growth and accelerates the breakdown of chlorine. By keeping the water cooler, these blankets can help lower chemical consumption, reducing both cost and environmental impact. Cleaner water also means less work for pool filters, extending their lifespan.
Extended Swimming Season
In hot climates, pools often become too warm in the summer, limiting swim time. With a cooling blanket, you can maintain optimal water temperatures well into the summer, ensuring you can swim comfortably throughout the season.
Types of Cooling Pool Blankets
There are different types of cooling pool blankets available in the market, each offering unique benefits depending on your pool size, climate, and usage.
Reflective Solar Blankets
These are the most common type of cooling blankets. They resemble regular solar covers but come in a silver or white reflective finish to bounce the sun’s rays away from the pool. They are available in different thicknesses and UV protection levels, making them suitable for both residential and commercial pools.
Shade-Loc Covers
Shade covers are made from a woven mesh material that provides partial shade coverage, typically between 50% to 90%. These covers are often used in conjunction with a manual or automatic pool reel system. They offer better breathability and can reduce pool temperatures by blocking a significant portion of incoming sunlight.
Thermal Exchange Covers
A newer type of cooling blanket uses thermal exchange technology. These covers absorb excess heat and radiate it away from the pool surface. They usually need to be submerged for some time to become effective but can maintain a steady water temperature over long periods.
Evaporative Cooling Blankets
These innovative covers allow for controlled evaporation by incorporating small holes or breathable material. As water evaporates from the surface, it removes heat, thus cooling the pool naturally. These blankets are best suited for dry, hot climates where evaporation has a significant cooling effect.
How to Choose the Right Cooling Pool Blanket
Selecting the right pool cover for cooling involves several considerations:
Pool Size and Shape
Cooling blankets come in standard rectangular and custom shapes. Ensure the blanket is tailored to your pool’s dimensions for the best coverage and effectiveness.
Intended Use
Are you cooling the pool for family use, therapy, or competitive swimming? The level of temperature control needed will influence your choice. Higher cooling efficiency is required for therapeutic or fitness purposes compared to casual use.
Climate Conditions
If you live in a consistently hot climate, opt for a highly reflective cover combined with some breathability. In more moderate locations, a lighter shade cover could suffice.
Budget and Longevity
Cooling pool blankets vary in price from $100 to over $500, depending on size, material, and technology. While higher-end reflective or thermal exchange blankets may cost more upfront, they often offer better durability and performance over time.
Installation and Maintenance
Some blankets are easier to install and remove than others. If you plan on using the blanket regularly, consider investing in an automatic pool cover reel, which simplifies the process and ensures consistent usage.
Installation Tips for Cooling Pool Blankets
Proper installation can make a big difference in how effectively your pool blanket works.
Use a Pool Cover Reel
Manual installation can be cumbersome and time-consuming. A cover reel system makes it easier to roll the blanket onto and off the water. A motorized reel adds convenience, especially for older users or large pools.
Ensure Full Coverage
Ideally, the blanket should cover the entire pool surface to maximize cooling. Even gaps or folds can allow sunlight in, reducing effectiveness. Smooth out wrinkles and trim any excess to ensure a snug fit.
Secure the Edges
In windy areas, pool covers can blow off or become damaged. Use weights, clips, or edge anchors to secure the blanket and prevent displacement.
Use During Peak Sun Hours
For best results, keep the pool blanket on during the sunniest part of the day, typically between 10 a.m. and 4 p.m. You can remove it when the pool is in use or during cooler evening hours.
Maintenance
Regular cleaning and proper storage can extend the life of your cooling pool blanket. Rinse it off with clear water to remove chlorine, debris, and sunscreen oils. Store in a shaded area when not in use to avoid UV degradation.
Comparing Cooling Blankets vs. Other Cooling Methods
Pool coolers go beyond blankets, but how do these alternatives stack up?
Cooling Pool Blankets vs. Pool Chillers
Pool chillers are electrical systems that cool pool water through refrigeration or heat exchange. While they are highly effective, they can be costly to install and operate. Cooling blankets provide a budget-friendly, low-energy alternative that is perfect for mild to moderate cooling needs.
Cooling Pool Covers vs. Misting Systems
Misting systems cool the area around the pool by spraying fine water mist. While they make the surrounding air more comfortable, they have minimal effect on water temperature. Additionally, in humid climates, misting systems become less effective due to poor evaporation.
Pools Coolers vs. Natural Shade
Planting trees or installing shade structures can also reduce pool temperatures. However, this solution takes years to develop and lacks flexibility. A cooling pool blanket offers an immediate, adjustable, and portable solution that can be used as needed.
Environmental and Economic Impact of Cooling Pool Covers
Reduces Energy Consumption
Using a cooling pool blanket shaves energy costs, especially if you avoid running a pool chiller or air conditioning units near the pool area. This makes them an excellent option for eco-conscious homeowners.
Helps Conserves Water
Unlike misting systems or open pools that lose large volumes of water to evaporation, cooling blankets help retain water levels while still offering thermal benefits.
Low Carbon Footprint
Being passive and non-electrical, pool blankets designed for cooling have virtually no carbon footprint. Their minimal production and long lifespan also contribute to sustainability.
Cost-Effective Cooling
Considering the investment versus the savings on energy and chemicals, these blankets offer a smart financial return over time. They typically pay for themselves within a few seasons of use.
Best Practices for Using Cooling Pool Blankets
To get the best results from your cooling pool blanket, follow these practical tips:
Use in Combination with a Pool Filter
Cool water circulates better through the filtration system, ensuring even cooling and improved cleanliness.
Monitor Temperature Regularly
Use a floating pool thermometer to track water temperature changes. This helps you adjust blanket usage as needed during the summer.
Combine with Other Strategies
For best results, combine your blanket with a cooling spa spillover, water features, or night flushing (draining some warm water at night and refilling) to enhance the effect.
Rotate for Even Coverage
If your blanket shows uneven wear or dirt buildup, rotate it regularly to maintain even performance and extend its life.
Check for Damage
Tears or holes can reduce the efficiency of the blanket. Inspect it often and repair or patch any damages promptly.
Conclusion: A Smart Investment for Pool Owners
Cooling pool blankets are a versatile, energy-efficient, and eco-friendly solution for pool owners looking to reduce water temperature without breaking the bank. Whether you live in a hot climate or just want to enjoy the pool during summer without feeling like a hot tub, these covers offer a smart, passive way to manage your pool’s thermal environment.
From preventing overheating to reducing chemical usage and conserving water, the benefits of using a cooling pool blanket extend far beyond comfort. As pool technology continues to evolve, more efficient and innovative solutions will arise—but for now, cooling pool blankets remain one of the best, most affordable ways to manage heat in your backyard oasis.
Remember to choose the type that best matches your pool size, climate, and usage needs—and install and maintain it properly to enjoy maximum cooling performance. Whether you’re cooling a residential pool or a commercial one, the right cooling pool blanket can transform your swim experience all summer long.
What is a pool blanket and how does it keep water cool?
A pool blanket, also known as a solar cover or pool solar blanket, is a specially designed floating cover made from durable, UV-resistant material. It works by trapping a layer of air between the blanket and the pool water, which acts as insulation. While often used to retain heat in cooler weather, certain types of pool blankets can also be used to keep water cooler by reducing solar heat absorption.
Some pool blankets are designed with reflective surfaces or lighter colors that minimize heat gain by reflecting sunlight rather than absorbing it. By covering the pool during peak sunlight hours, these blankets help reduce the amount of heat transferred into the water from the sun, making the pool more comfortable during hotter days.
Are all pool blankets suitable for cooling water?
Not all pool blankets are created equal, and their effectiveness in cooling pool water varies. Traditional solar blankets with dark coloring are designed to absorb and retain heat, making them ideal for warming the pool. However, in hot climates or during peak summer months, using a dark solar blanket may further increase water temperature.
To cool the pool, homeowners should opt for cooling-specific pool blankets that are typically lighter in color or made with reflective material. These blankets are engineered to reduce heat absorption by reflecting more sunlight. It’s important to confirm the purpose of a pool blanket before purchasing, especially if the goal is to keep the water temperature lower than ambient.
How do cooling pool blankets affect evaporation and chemical loss?
Cooling pool blankets, like standard solar covers, significantly reduce evaporation when the pool is not in use. By forming a barrier on the surface of the water, these blankets prevent moisture from escaping into the air. This helps maintain water levels and reduces the need for frequent refilling.
In addition to minimizing evaporation, cooling pool blankets also help retain pool chemicals like chlorine. When water evaporates, it leaves behind concentrated chemicals, which can lead to imbalance. Covering the pool stabilizes chemical levels and reduces the workload on filtration systems, leading to cost savings and less maintenance for pool owners.
When is the best time to use a cooling pool blanket?
The best time to use a cooling pool blanket is during the hottest parts of the day when the sun is strongest, typically between late morning and early evening. Keeping the blanket on the pool during these hours helps limit direct sunlight from heating the water. Pool owners in warmer regions or those who experience high afternoon temperatures may benefit greatly from this strategy.
However, it is also important to remove the blanket periodically to allow for ventilation and air circulation. Keeping the blanket on constantly can lead to stagnation and potential water chemistry issues. Ideally, the blanket should be removed when the pool is in use or during cooler times of the day to allow for heat dissipation.
How long does it take for a cooling pool blanket to lower the water temperature?
The time it takes for a cooling pool blanket to lower the water temperature varies depending on several factors, including the type of blanket used, outdoor temperature, and how consistently it’s applied. Generally, users may notice a slight cooling effect within a few days of regular use, but significant changes can take up to a week or more.
For best results, the cooling blanket should be used consistently during peak sunlight hours and in combination with other cooling methods such as shade structures or pool fans. It’s also important to ensure the pool’s filtration system is running efficiently to circulate the cooled water throughout the pool.
How do I maintain and store a cooling pool blanket?
Maintaining a cooling pool blanket involves regular cleaning to remove debris, dirt, and chemical residue. Rinsing the blanket with fresh water before and after each use will help prolong its lifespan. Occasionally, a mild soap solution can be used to clean the surface, followed by a thorough rinse to avoid leaving harmful residues.
When not in use, the blanket should be properly stored to avoid damage from UV exposure, pests, or extreme temperatures. Folding it carefully or using a reel system to keep it dry and protected is recommended. Avoid placing heavy objects on top of the blanket, as this can cause creases or structural damage over time. With proper care, a cooling pool blanket can last several seasons.
Can I use a cooling pool blanket with an automatic pool cover system?
Yes, a cooling pool blanket can be used in conjunction with an automatic pool cover system. However, it’s important to note that the cooling blanket should be placed directly on the water’s surface, while automatic covers usually sit above or enclose the pool area. To maximize cooling, some users place the blanket under the automatic cover, allowing the combined layers to work together in reducing heat gain.
Both covers should be compatible in terms of size and thickness to ensure proper operation of the automatic system. Regular inspection is also necessary to prevent any pinching or snagging of the blanket as the automatic cover opens and closes. Using both systems together can offer enhanced energy efficiency and temperature control, particularly in hotter climates.