7 Best Solar Blankets for Heating Pool Water That Pros Recommend

Looking to extend your swimming season without the high energy costs? Solar blankets are a game-changer for pool owners, capturing the sun’s free energy to heat your water while reducing evaporation and chemical loss.

These innovative covers can raise your pool temperature by 10-15 degrees Fahrenheit, making early spring and late fall swimming a comfortable reality rather than a chilly endurance test. We’ve researched and compiled the seven most effective solar blankets on the market that deliver exceptional heating performance while fitting various pool sizes and budgets.

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Understanding Solar Blankets: How They Heat Your Pool Water

How Solar Blankets Work to Retain Heat

Solar blankets function as thermal barriers that trap the sun’s heat in your pool water. These covers feature thousands of tiny air bubbles that collect solar radiation during daylight hours and transfer this energy to your pool water. The bubble design also creates an insulating layer that prevents heat loss through evaporation—which accounts for up to 70% of a pool’s heat loss. At night, the blanket continues working by blocking heat from escaping into the cooler air.

Benefits of Using Solar Blankets for Pool Heating

Using a solar blanket delivers multiple advantages beyond just warmer water. You’ll reduce water evaporation by up to 95%, significantly decreasing the need for frequent refilling. Your chemical consumption will drop by 35-60% as the cover prevents chemicals from evaporating. Energy costs decrease dramatically compared to gas or electric heaters, potentially saving hundreds of dollars annually. Plus, solar blankets extend your swimming season by 4-6 weeks in spring and fall.

Top Features to Consider When Buying a Pool Solar Blanket

Thickness and Material Quality

When shopping for a solar blanket, thickness is directly related to durability and heating efficiency. Look for covers with at least 12-mil thickness for optimal heat retention and longevity. Premium materials like polyethylene with aluminized layers offer superior heat transfer and insulation. Higher quality blankets typically feature air-filled bubbles that create effective thermal barriers while remaining lightweight enough for easy handling.

Size and Shape Options

Your solar blanket should match your pool’s dimensions for maximum effectiveness. Most quality blankets come in rectangular, round, and oval options to accommodate different pool designs. Many manufacturers offer multiple size variants that can be easily trimmed to achieve a custom fit. When measuring your pool, add 3-4 inches of overlap to ensure complete coverage and prevent heat loss around the edges. Remember that an ill-fitting cover won’t effectively retain heat.

UV Resistance and Durability

UV resistance is crucial for extending your solar blanket’s lifespan and maintaining its heating efficiency. Look for blankets with UV inhibitors that prevent degradation from constant sun exposure. The best models feature specialized coatings that withstand chlorine and other pool chemicals without breaking down. Reinforced edges and tear-resistant materials significantly increase durability. Premium blankets often come with warranties ranging from 3-7 years, indicating the manufacturer’s confidence in their product’s longevity.

Sun2Solar Clear Diamond Solar Pool Cover: Best Overall Choice

Key Specifications and Performance

The Sun2Solar Clear Diamond Solar Pool Cover features durable polyethylene material available in 12-mil and 16-mil thicknesses with a transparent design that maximizes UV penetration. This cover efficiently raises water temperature by up to 10 degrees, sometimes reaching 91°F after extended use. Its clear material significantly reduces water evaporation, maintains chlorine levels, and prevents debris from entering your pool, dramatically reducing maintenance needs.

Pros and Cons

Pros: The clear design allows deeper UV penetration for superior heating performance. It’s easily trimmed to fit any pool shape, significantly reduces water and chemical evaporation, and minimizes debris accumulation, saving on maintenance time and costs.

Cons: Durability may be limited to about 18 months in intense sunlight conditions. The cover can shift during windy weather unless secured with additional tarp clamps, and initial trimming requires careful measurement and sharp tools.

Intex Solar Pool Cover: Best Budget-Friendly Option

Key Specifications and Performance

The Intex Solar Pool Cover features durable 8-mil polyethylene material with UV stabilization technology. Available in multiple sizes to fit standard Intex pools, this budget-friendly option raises water temperature by 5-7 degrees while reducing evaporation by up to 90%. Its lightweight design allows heat to penetrate effectively while preventing debris from contaminating your pool water.

Pros and Cons

Pros:

• Most affordable option on our list without sacrificing basic heating capability
• Easy installation requires no special tools or expertise
• Lightweight design makes removal and storage simple
• Effectively extends swimming season by several weeks

• Less durable than thicker premium options (may need replacement sooner)
• Heat retention isn’t as effective as 12-mil or thicker alternatives
• Can shift during windy conditions without additional anchoring

Blue Wave Solar Blanket: Best for Heat Retention

The Blue Wave Solar Blanket stands out for its exceptional heat retention capabilities, making it perfect for pool owners seeking to maximize water temperature even during cooler weather conditions.

Key Specifications and Performance

The Blue Wave comes with an impressive six-year warranty, outperforming many competitors in longevity. Made from durable polyethylene, it’s available in various sizes for rectangular in-ground pools and can be custom-cut if needed. Performance-wise, it’s remarkable—capable of raising water temperature from 75°F to 95°F during warm weather and maintaining comfortable temperatures even on cloudy days while significantly reducing evaporation.

Pros and Cons

Pros: Exceptional heat capture and retention allows for extended swimming seasons. The six-year warranty demonstrates durability and manufacturer confidence. It effectively prevents debris from entering the pool and drastically reduces water evaporation, saving on water costs.

Cons: Some users find the appearance less attractive than other models. Installation and removal can be cumbersome without a roller system, potentially requiring two people. Regular maintenance is necessary to preserve effectiveness.

Midwest Canvas Solar Pool Cover: Best for Durability

Key Specifications and Performance

The Midwest Canvas solar pool covers come in two impressive models: the Round Solar Blanket with a 3-year warranty and the Canvas Space Age Solar Cover with a 7-year warranty. These polyethylene covers significantly raise water temperature—the Round model increased pool temperature from 66°F to 74°F in just two days. Both models float effectively on the water surface, preventing debris accumulation while maintaining excellent heat retention capabilities even during cooler weather conditions.

Pros and Cons

Pros:

• Exceptional durability with warranties ranging from 3-7 years
• Remarkable heating efficiency, adding approximately 2°F daily in sunny conditions
• Excellent at preventing evaporation and keeping debris out
• Easy customization for oddly-shaped pools
• Lightweight design makes handling simpler for the Round model

• Product images may not match actual shape received
• Requires careful handling to prevent tears
• Heavier Space Age model can be challenging to remove without assistance
• May show mineral deposits on the opaque gray surface over time

Splash Pools Solar Cover: Best for Above-Ground Pools

The Splash Pools Solar Cover stands out as the ideal solution for above-ground pool owners seeking efficient heating and protection. This purpose-designed solar blanket delivers impressive temperature increases while fitting perfectly on circular above-ground pools.

Key Specifications and Performance

This 12-mil thick polyethylene cover features thousands of heat-retaining air bubbles that can raise water temperature by 8-10 degrees within 24 hours. Available in multiple sizes for above-ground pools, it blocks 95% of water evaporation and includes UV inhibitors for extended durability. The blue-tinted material effectively captures solar radiation while preventing debris contamination.

Pros and Cons

Pros:

• Perfect circular fit for standard above-ground pools
• Easy installation without trimming for most round pools
• Superior heat retention compared to thinner alternatives
• Reduces chemical usage by up to 40%
• Includes reinforced edges for extended lifespan

• Limited to circular pool shapes without significant modification
• Requires a roller system for convenient removal (sold separately)
• Heavier than budget alternatives, making solo handling challenging

Proper Maintenance and Care for Your Solar Pool Blanket

Proper maintenance of your solar pool blanket is essential for maximizing its efficiency and extending its lifespan. With regular care, your investment can continue to heat your pool effectively for many seasons.

Cleaning and Storage Tips

Clean your solar blanket regularly using mild detergent and avoid abrasive materials that could damage the bubbles. Rinse thoroughly to prevent residue buildup that might affect performance. When not in use, store your blanket in a dry, shaded area using a pool box or reel system. Avoid folding or creasing the cover as this can lead to cracks and structural damage over time. A roller system makes installation and removal significantly easier, especially for larger covers.

Extending the Lifespan of Your Solar Blanket

Never walk or step on your solar blanket as this can cause irreparable damage and potentially void your warranty. When using accessories like rollers, ensure you’re using new hardware to prevent damage to the cover. Trim your blanket carefully using a sharp utility knife following manufacturer guidelines for a proper custom fit. Regularly inspect for signs of wear and address issues promptly. Check warranty terms and report any defects within the specified timeframe to maintain coverage—most premium models offer warranties ranging from 3-7 years.

Comparing the Top 7 Solar Blankets: Which One Is Right for You

Investing in a quality solar blanket transforms your pool experience by extending your swimming season and reducing maintenance costs. Whether you prioritize maximum heating with the Blue Wave Solar Blanket or durability with the Midwest Canvas models there’s an option that fits your specific needs.

For above-ground pool owners the Splash Pools Solar Cover offers specialized protection while budget-conscious swimmers will appreciate the Intex Solar Pool Cover‘s value. The Sun2Solar remains our top overall recommendation balancing performance and price.

Remember that proper maintenance dramatically extends your blanket’s lifespan. With the right solar blanket you’ll enjoy warmer water longer swimming seasons and significant savings on chemicals and heating costs for years to come.

Frequently Asked Questions

How much can a solar blanket increase my pool temperature?

Solar blankets can increase your pool temperature by 10-15 degrees Fahrenheit. This significant temperature boost makes swimming possible during cooler months and extends your swimming season by 4-6 weeks in spring and fall. Some high-performance models like the Blue Wave Solar Blanket can raise water temperature from 75°F to 95°F during warm weather.

What thickness should I look for when buying a solar pool blanket?

Look for solar blankets with at least 12-mil thickness for optimal heat retention and durability. Thicker blankets (12-16 mil) provide better insulation, trap more heat, and generally last longer than thinner options. Budget models like the Intex Solar Cover (8-mil) can still be effective but may not retain heat as efficiently or last as long as premium thicker options.

How much water evaporation can solar blankets prevent?

Solar blankets can reduce water evaporation by up to 95%. This significant reduction means less time and money spent refilling your pool. By creating a barrier between the water and air, solar blankets prevent evaporation while simultaneously trapping heat in the water, resulting in warmer temperatures and less water loss.

Do solar blankets reduce chemical use in pools?

Yes, solar blankets can decrease chemical consumption by 35-60%. By preventing evaporation, they help maintain consistent chemical levels in your pool water. This reduction not only saves money on pool chemicals but also creates a more stable swimming environment with fewer fluctuations in chlorine and other treatment chemicals.

What’s the best way to maintain a solar pool blanket?

Clean your solar blanket regularly with mild detergent and rinse thoroughly to prevent residue buildup. Store it in a dry, shaded area when not in use, avoiding folding or creasing to prevent damage. Never walk on the blanket and use appropriate hardware when using rollers. Regular inspections for wear will help maximize its lifespan and effectiveness.

Can I trim a solar blanket to fit my pool shape?

Most solar blankets can be trimmed for a custom fit. Products like the Sun2Solar Clear Diamond Solar Pool Cover are specifically designed to be easily cut to match your pool’s unique dimensions without affecting the blanket’s performance. When trimming, carefully measure and mark the cover before cutting to ensure proper coverage and optimal heat retention.

Which solar blanket is best for above-ground pools?

The Splash Pools Solar Cover is ideal for above-ground pools. This 12-mil thick polyethylene cover raises water temperature by 8-10 degrees within 24 hours and blocks 95% of evaporation. Designed for circular pools, it provides a perfect fit without trimming and includes UV inhibitors for extended durability in direct sunlight.

How long do solar pool blankets typically last?

Premium solar pool blankets typically last 3-7 years with proper care. Models like the Midwest Canvas Space Age Solar Cover come with a 7-year warranty, while budget options might have shorter lifespans of 1-3 years. Factors affecting longevity include thickness, material quality, exposure to chemicals, UV radiation, and how well the blanket is maintained.