10 Best Hot Tub Thermal Blanket of 2025

Tested and Reviewed: Top 10 Hot Tub Thermal Blanket deals with expert ratings from 8.1 to a perfect 10

June 2025 Edition

Editor's Choice

9.7

Save 13%

Gekufa

Hot Tub Bubble Blanket - 8 x 8 FT 16-Mil Square Pool Spa Solar Cover | Heavy Duty Floating Heat Retaining Thermal Blanket for Insulating Solar Heating （Gray）

13% OffFree Shipping

Editor's bottom line:

“This hot tub thermal blanket is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Energy Saving and Environmental ProtectionSolar pool covers use the power of sunlight to heat water, and you simply place it over your hot tub or pool to help retain heat, reducing evaporation and keeping your water clean. There's no need to refill even days after your last swim because we reduce water evaporation by 95% and you can reuse the water. So you can swim by heating the water ahead of time or keeping it warm after swimming and continue to enjoy swimming throughout the season.
High-quality MaterialsSwimming Pool Solar Blanket is made of PE material, which is strong and lightweight, not easy to break or fade, and will not be damaged by soaking in water or in the sun. Will serve you long-term, and you can keep using it next summer.
Can be cut at willYou can cut Solar Pool Blankets to the desired size and shape according to your pool/hot tub, big enough for your needs and replacements. Great for foot easy setups and metal frame round pools of all shapes! Insulated covers for in-ground and above-ground swimming pools.
Wide ApplicationInground Swimming Pool Solar Blanket is a practical and useful accessory for swimming pools, hot tubs, spas, ponds, etc. It can not only absorb the heat of the sun during the day, reduce water evaporation, but also keep the pool water clear. Keeping your pool free of debris and leaves when not in use can help keep your pool free of dirt and away when not in use.
100% Satisfaction GuaranteeYou can decide the Hot Tub Solar Cover quality and performance. If you are not satisfied with your purchase for any reason, simply contact us for our 100% satisfaction guarantee, which means there is no risk for you to try today!

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Picked by 281 people today

9.5

SummerCool

Hot Tub Thermal Blanket Bubble Cover 16 Mil Insulation Blanket,6ft x 6ft Floating Spa Solar Blanket

Free Shipping

Main Highlights

Floating thermal blanket for hot tub 6ft x 6ft
Hot tub bubble cover is made of long-lasting heavy duty PE( 16 Mil thick)material, safe and environmental protection.
Cut to fit.Easy to trim with scissor and easier to deal with than a big foam cover.
It helps retain the heat throughout the night. it also helps reduce the amount of time to run the pool heater.
Prevent up to 95% of water and chemical evaporation with the use of a solar blanket.

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Best Value

9.5

Save 25%

AURSK

AURSK SPA and Hot Tub Bubble Cover, 12mil 7x7 Foot Square Hot Tub Thermal Blanket,Insulating Blanket for Outdoor Hot Tubs,Blue

25% OffFree Shipping

Main Highlights

Faster heating rate - naturally! Tired of waiting for hours by the hot tub? The solar blanket of this hot tub absorbs sunlight well and increases the temperature by 30% faster. Perfect for relaxing after a long day or inviting friends for a cozy spa night in the backyard.
Lock in the warmth like a thermos - even when it's snowing! The thick insulation of this hot tub bubble cover holds your hot tub tightly like clothing. Wake up on a frosty morning and jump into warm water, or take a sneaky dip in the middle of the night - no reheating required. Winter has met its match!
Bye-Bye, leaf soup! Say goodbye to the leaves in the bathtub!" This sturdy shield can block falling debris, leaves, pollen, and even naughty little animals. Keep your spa clean, whether it's under the maple trees or under the city sky.
Custom Fit in 5 MinutesNo Pro Skills Needed! Round, oval, hexagon?Grab scissors, measure once, and trim!Snug as a glove, zero gaps.No more wrestling with bulky one-size-fits-none covers!
Tougher Than a Cowboy Boot! Rain, UV rays, Bad weather?Bring it on!High-strength anti-aging PE materials laugh at weather tantrums.The 12MIL gold thickness is both effective and cost-effective, and will last several years longer than other frailty covers - your hot tub's forever wingman.

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9.2

Save 18%

Frienda

Frienda 6 x 6 ft Pool Hot Tub Solar Cover, 16 Mil Heavy Duty Trimmable Floating Thermal Blanket Spa Bubble Cover for Hot Tub Inground Pools Swimming Insulating Solar Heating

18% OffFree Shipping

Main Highlights

Large Enough Size: you will receive 1 piece of hot tub bubble cover, each measures approx. 6 x 6 ft/ 183 x 183 cm, large enough to meet your needs and replacements, and you can cut it into desired sizes and shapes according to your demands
Reliable and Long Lasting: the pool solar blanket is made of PE material, reliable and reusable, sturdy and lightweight, not easy to break or fade, which can serve you for a long time, and you can use it with confidence
Simple to Use: inflatable hot tub cover is easy and convenient for you to use, you just need to put it over your hot tub or swimming pool to help retain heat, which can reduce evaporation and keep your water clean, bringing much convenience to you
Heat Retention: hot tub blanket can use the power of the sunlight to heat up the water, and the bubble can provide nice heat insulating, keeping your water warm and make you enjoy swimming
Widely Applicable: solar blanket for inground pools is a practical and useful accessory for swimming pool, hot tub, spa, pond and so on, which can not only trap heat from the sun during the day and reduce water evaporation, but also can keep your swimming pool away from debris and leaves when not in use

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9.0

Angooni

Angooni 6x6FT Hot Tub Thermal Blanket - 16 Mil Hot Tub Bubble Cover, Thermal Solar Blanket for Insulating Square Inflatable Hot Tub Spas, Hot Tub Pools(183x183cm)

Free Shipping

Main Highlights

- Cost-Effective Hot Tub Thermal Cover: Save on utility bills with thermal blanket that reduces water evaporation by up to 95%. Designed to float on the water surface, its bubbles effectively capture and transmit solar energy to optimize heating speeds, also decreasing the time cost.
- Multi-Functional Protection: Protect your hot tub from debris, including leaves, dirt, dust, and small animals like ducks. Our thermal blanket for hot tub enhances cleanliness and reduces maintenance effort, ensuring your spa remains pristine.
- Superior 16MIL Thickness: Beat the 8-12 mil hot tub insulation blanket on the market, our cover is more reliable. It is less prone to tearing, and the air bubbles are less likely to burst, further ensuring that our hot tub blankets are better insulated.
- Easy to Cut & Fit: Designed for convenience, this 6x6 FT hot tub bubble cover is easy to trim and install, allowing for a snug fit within your hot tub. For optimal performance, remember to position the bubble side facing down.
- Versatile Applications: Ideal for various water features such as in-ground spas, hot tubs, and stock tank pools, this hot tub thermal blanket offers unparalleled solar heating benefits, making it a must-have for any water enthusiast.

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8.8

Save 7%

RGJ

7 x 7 FT Spa and Hot Tub Cover, 16Mil Square Hot Tub Thermal Blanket, Insulation Solar Blanket Bubble Cover for Energy Efficiency & Safety

7% OffFree Shipping

Main Highlights

16MIL Thick Material: Our solar pool cover is made of safe, reusable PE material, compared to most of the 8-12 MIL thickness, our thickness is 16MIL, so we can heat water faster and reduce heating costs
Insulation: Our solar blanket is composed of thousands of tiny bubbles, which can absorb the heat of the sun, reduce heat loss at night, and effectively increase the water temperature according to environmental conditions. The black color has a better insulation effect
Reduce Water Evaporation & Keep the Water Clean: Our pool solar cover can reduce 95% of water evaporation, reduce the number of times you add/change water, save water resources, and prevent fallen leaves/dust/insects from entering, ensuring the cleanliness of the water, allowing you to enjoy the spa bath more comfortably
Easy To Cut: Our hot tub cover is easy to cut, so you can match hot tubs, bathtubs, massage pools, etc. of different sizes and shapes. When using, the bubble side faces the water surface
Longer Service Life: Our spa covers has excellent tensile and tear resistance, is strong and durable, not easy to break, and is not easy to fade and deform even under strong sunlight, and can be reused for a long time. Foldable storage, does not take up too much storage space.

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8.6

BigXwell

Hot Tub Bubble Blanket,16-mil 7x7 Foot Square Spa Cover Hot Tub Solar Cover, Heavy-Duty Heat Retaining Thermal Blanket.

Free Shipping

Main Highlights

Transform Your Backyard Experience : BigXwell hot tub bubble blanket maximizes heat retention, slash heating time & boost warmth retention!ensuring,your spa remains invitingly warm. Experience the serenity of steaming waters even in the chill of winter without the wait.
Energy Efficient: Say goodbye to sky-high heating bills! BigXwell hot tub cover significantly reduces heat loss, minimizing the energy required to keep your hot tub toasty.Enjoy long, luxurious soaks without the financial stress.
Custom Fit: Tailored for perfection, our spa cover is designed to fit most spa sizes seamlessly, providing an airtight seal that further enhances insulation and efficiency.
Durable: Its robust design ensures it remains a staple in your hot tub setup through every season.
Elevate your spa sessions with the BigXwell spa Cover, designed specifically for the discerning homeowner looking to optimize their backyard oasis.

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8.3

AllAreN

AllAreN Hot Tub Bubble Cover, 7x7 Foot Hot Tub Thermal Blanket Square Solar Cover Insulation Blanket for Outdoor Hot Tub

Free Shipping

Main Highlights

Energy Saving and Efficiency Improvement: The hot tub solar blanket can greatly shorten the heating time, and the solar cover insulation retards the heat release, avoiding wasting your money on continuous heating
Reduce Water Evaporation: Spa and hot tub blanket can effectively prevent up to 95% of the water from evaporating,Ensuring enough water to be recycled and avoiding the waste of resources caused by frequent water additions
More Uses: Hot tub bubble blanket absorb solar energy to heat water and keep your pool warm at all times.Spa solar bubble cover prevents debris and leaves from falling into the pool and keeps the water clear.It is a good helper to maintain the swimming pool
Easy to Cut: If your tub is irregularly shaped, you can put the solar spa cover on the hot tub first, then make a mark and cut along the mark.Our spa bubble blanket perfect for in-ground or above-ground hot tub or swimming pools,outdoor hot tub spa, bath tub, massage pool, swimming pool
Perfect Experience: 10 Mil thickness,anti-wear,light,soft and good toughness,perfect fit to the water surface,easy to fold and store,long service life,our spa bubble cover film makes you feel more secure

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8.1

Save 6%

MADHOLLY

Spa and Hot Tub Cover - 7 × 7 FT 16-mil Square Hot Tub Thermal Insulation Solar Blanket Bubble Cover, 210 × 210 CM

6% OffFree Shipping

Main Highlights

Bubble-side Down: When using, you need to put the bubble side of the solar blanket for hot tubs close to the water surface, with the smooth side facing up, which can also play a role in preventing dust, reducing condensation and freezing on the edge.
16 MIL Thickness: Different from the general 8-12 mil spa hot tub solar blanket, we use a thicker material of 16 mil, which has better heat preservation and water retention effect, the bubbles will not crack or fall off, and the square solar cover can be used for a long time.
Save Time & Money: When you heat the water in your hot tub, putting our thick bubble hot tub cover on it can greatly shorten the heating time, and it also saves you money to some extent. Besides, using the blanket cover can effectively cut down the condensation on your hot tub cover.
More Functions: Covering the square solar cover on the hot tub can not only effectively prevent up to 95% of water evaporation loss, but also maintain the water temperature and absorb the heat energy of the sun's rays to heat the water, reducing the time you need to heat the water in the next time.
Trim to Fit: Our thermal solar blanket cover is 7 × 7 ft/210 × 210 cm and fits most square hot tubs. If your tub has more irregular shapes, you can put the cover over the hot tub first, then make a mark and cut along the mark.

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8.1

UCEDER

UCEDER Hot Tub Cover with Insulation170G Polyethylene Spa Cover Waterproof and UV Protection Hot Tub Sun Shield(76"x76"x35",Silver)

Free Shipping

Main Highlights

Energy-Saving and Eco-friendlyThe waterproof spa cover is made of 170G top polyethylene material, providing excellent thermal insulation that helps reduce heat loss, save energy, and minimize your electricity bill, making it an eco-friendly option for your hot tub.
Powerful FunctionsSpa cover protector can protect your Hot Tub from Dirt, Hot Sun,Dust, Rain, Hail, Bird Droppings etc.
Hook and Loop ClosureExtra install door design makes customer very easy to install it and make the cap tighten.is Ideal for use on hot tub hard cover.
Wind Belt DesignTwo stainless steel D-lockers are very easy to be loosed or tighten,it won't break.Allows adjustment for a tight in a harsh environment to prevent blow off.
Warm TipsThe insulation is on the back-side instead of the top. If there is insulation on the top, it will not be waterproof.The cover not be used by itself without an insulated hard cover under it.

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Our Best Overall Choice

Best Choice

9.7

Gekufa

Hot Tub Bubble Blanket - 8 x 8 FT 16-Mil Square Pool Spa Solar Cover | Heavy Duty Floating Heat Retaining Thermal Blanket for Insulating Solar Heating （Gray）

13% OffFree Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Energy Saving and Environmental ProtectionSolar pool covers use the power of sunlight to heat water, and you simply place it over your hot tub or pool to help retain heat, reducing evaporation and keeping your water clean. There's no need to refill even days after your last swim because we reduce water evaporation by 95% and you can reuse the water. So you can swim by heating the water ahead of time or keeping it warm after swimming and continue to enjoy swimming throughout the season.
High-quality MaterialsSwimming Pool Solar Blanket is made of PE material, which is strong and lightweight, not easy to break or fade, and will not be damaged by soaking in water or in the sun. Will serve you long-term, and you can keep using it next summer.
Can be cut at willYou can cut Solar Pool Blankets to the desired size and shape according to your pool/hot tub, big enough for your needs and replacements. Great for foot easy setups and metal frame round pools of all shapes! Insulated covers for in-ground and above-ground swimming pools.
Wide ApplicationInground Swimming Pool Solar Blanket is a practical and useful accessory for swimming pools, hot tubs, spas, ponds, etc. It can not only absorb the heat of the sun during the day, reduce water evaporation, but also keep the pool water clear. Keeping your pool free of debris and leaves when not in use can help keep your pool free of dirt and away when not in use.
100% Satisfaction GuaranteeYou can decide the Hot Tub Solar Cover quality and performance. If you are not satisfied with your purchase for any reason, simply contact us for our 100% satisfaction guarantee, which means there is no risk for you to try today!

Show Price

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