John Doe

If you want to make your dreams come true, the first thing you have to do is wake up.

Mary Taylor

You can have anything you want if you are willing to give up everything you have.

The Best Thermal Blanket for Hot Tub: The Buying Guide 2023

Posted by

As an Amazon Associate I earn from qualifying purchases.

Welcome to our comprehensive guide on the Best Thermal Blanket for Hot Tub: The Buying Guide 2023. As hot tub owners, we understand the importance of maintaining the optimal temperature for our tubs. Every time we soak, it guarantees a cosy and soothing experience. It significantly contributes to energy saving and the longevity of our hot tubs.

Thermal Blanket for Hot Tub

That’s why choosing the best thermal blanket is essential, as this accessory protects against heat loss, water evaporation, and undesirable debris.

Why Choose a Thermal Blanket?

A hot tub is an excellent place to unwind and relax. Still, a proper thermal blanket can be expensive and efficient. A thermal blanket is a protective barrier, reducing heat loss and evading evaporation. Choosing a thermal blanket allows you to extend your soaking sessions, reduce heating costs, and minimize the strain on your hot tub’s heating system.

Benefits of Using a Thermal Blanket for Hot Tubs

Using a thermal blanket for your hot tub offers several advantages:

  • Heat Retention: A thermal blanket is a barrier, preventing heat loss and maintaining the water temperature in your hot tub. This reduces the need for frequent reheating and helps save energy.
  • Energy Efficiency: A thermal blanket reduces the workload on your hot tub’s heating system by minimizing heat loss. As a result, energy use is decreased, and utility costs are lowered.
Benefits of Using a Thermal Blanket for Hot Tubs
  • Protection: Thermal blankets provide a protective layer that shields your hot tub from debris, leaves, and other contaminants. They also help prevent evaporation, reducing water and chemical loss.
  • Extended Hot Tub Season: With a thermal blanket, you can extend the usability of your hot tub beyond the warmer months. You may use your hot tub all year since it helps keep heat in more excellent conditions.
  • Water Conservation: Thermal blankets help prevent water evaporation, saving you money on water bills and reducing the need for refilling your hot tub frequently.

Types of Thermal Blankets

Regarding thermal blankets, there are a few different options available. Let’s take a look at the most common types:

  • Foam Thermal Blankets: These blankets are made from closed-cell foam and provide excellent insulation. They have excellent heat retention qualities and are lightweight and straightforward to install.
  • Solar Thermal Blankets: Solar blankets are constructed with a layer of air bubbles that help trap heat from the sun. They are energy-efficient, environmentally friendly, and can raise the water temperature of your hot tub using solar energy.
  • Floating Thermal Blankets: As the name suggests, these blankets float on the water’s surface and provide insulation by reducing heat loss through evaporation. They are easy to use and remove, making maintenance a breeze.

Factors to Consider Before Buying

Before purchasing a thermal blanket for your hot tub, it’s essential to consider the following factors:

  • Size: Ensure the thermal blanket suits your hot tub’s dimensions for maximum coverage and insulation.
  • Size: Ensure the thermal blanket suits your hot tub’s dimensions for maximum coverage and insulation.
  • Material Quality: Opt for blankets made from durable and UV-resistant materials to ensure longevity and resistance to harsh weather conditions.
  • Ease of Use: Look for blankets that are easy to install, remove, and clean, allowing for a hassle-free hot tub experience.
  • Insulation Capability: Check the blanket’s insulation capabilities and choose one with a high R-value to effectively retain heat.
  • Warranty: Consider blankets with a contract, as it indicates the manufacturer’s confidence in their product’s quality.

Top 5 Thermal Blankets for Hot Tubs

Best Hot Tub Bubble Cover Floating Spa Blanket

Product Specifications

  • Size: 6 ft x 6 ft
  • Brand: Spa Depot
  • Product Dimensions: 72″L x 72″ W
  • Style: Heavy Duty
  • Shape: Square

Product Description

Maximize the performance of your hot tub with the Spa Depot Thermo-Float 16-mil 6ft x 6ft Hot Tub Bubble Cover Floating Spa Blanket. This heavy-duty blanket reduces evaporation heat loss by up to 95% and protects your spa cover from water absorption. Its trim-to-fit feature is perfect for surface coverage up to 6’x6′. Trust the genuine ThermoFloat brand by Spa Depot for superior insulation and durability.

Product Features

The Spa Depot Thermo-Float 16-mil 6ft x 6ft Hot Tub Bubble Cover Floating Spa Blanket offers a range of features to enhance your hot tub experience:

  • Heavy-Duty Construction: The thick 16-mil film (16/1000″) ensures durability and longer service life, making this blanket an excellent investment for long-term use.
  • Exceptional Insulation: With its advanced bubble cover design, the Thermo-Float 16-mil Spa Blanket reduces evaporation heat loss by up to 95%. This helps maintain the optimal temperature of your hot tub and improves energy efficiency.
  • Protection from Water Absorption: This thermal blanket acts as a protective barrier, safeguarding your spa cover from water absorption. By preventing water from seeping into the body, it helps maintain its integrity and extends its lifespan.
  • Trim-to-Fit Design: The blanket’s trimmable feature allows you to customize it to fit the exact dimensions of your hot tub. You can guarantee a snug and secure fit with a surface covering up to 6’x6′ (72″x72″).
  • Genuine ThermoFloat Brand: As a product by Spa Depot, a trusted brand in the industry, this thermal blanket guarantees quality and performance. The genuine ThermoFloat brand is synonymous with superior insulation and durability.

Product Pros

  • Optimal Heat Retention: The Thermo-Float 16-mil Bubble Cover ensures exceptional heat retention, reducing energy consumption and lowering heating costs.
  • Easy Customization: The trim-to-fit design enables you to tailor the blanket to fit your hot tub precisely, ensuring adequate coverage and heat retention.
  • Enhanced Energy Efficiency: By reducing evaporation heat loss by up to 95%, this thermal blanket promotes energy efficiency, resulting in potential savings on utility bills.
  • Protection for Spa Cover: The Thermo-Float Blanket serves as a barrier, preventing water absorption that might harm and impair the function of your spa cover.

Product Cons

  • Square Shape Only: This thermal blanket is designed explicitly for square-shaped hot tubs, limiting its compatibility with other shapes.

Best Solar Sun Thermal Blanket for Hot Tub

Product Specifications

  • Absorbs Sunlight: Yes
  • Retains Heat and Water Chemistry: Yes
  • All Weather: Yes
  • Salt Water or Chlorine Compatible: Yes
  • Easy to Clean: Yes
  • Colour: blue
  • Dimensions (W x H): 60 x 2 inc
  • Item Weight: 2.5 pounds
  • Manufacturer: Solar Sun Rings
  • ASIN: B07F4R78Z1
  • Item Model Number: SSR-SB-02

Product Description

Designed with two sheets of UV-resistant vinyl, it absorbs sunlight and converts it into heat, providing free warmth to your pool or spa. This solar blanket cover retains heat, reduces water and chemical evaporation, and is compatible with all weather conditions.

Product Features

Several characteristics of the Solar Sun Rings UV Resistant Above Ground Inground Swimming Pool Hot Tub Spa Heating Accessory may improve your time in the pool or spa:

  • Sunlight Absorption: The two sheets of UV-resistant vinyl efficiently absorb sunlight, converting solar energy into heat. This innovative design harnesses the sun’s power to provide free warmth to your pool or spa.
  • Heat and Water Retention: This solar blanket cover retains heat during the night, allowing you to enjoy a warm pool or spa even after the sun sets. It also reduces water evaporation, which helps to conserve water and maintain optimal water chemistry.
  • All-Weather Durability: The Solar Sun Rings are designed to withstand various weather conditions. Water anchors add stability and weight, ensuring the rings remain in place during storms and windy conditions.
  • Compatibility with Salt Water or Chlorine Systems: The Solar Sun Rings are compatible with salt water and chlorine systems. They are not affected by these systems and can be used with automatic pool cleaners without any issues.
  • Easy Cleaning and Storage: The Solar Sun Rings are easy to clean and store. However, it is essential to note that when not in the water, they should not be held in direct sunlight as the product can burn whatever items are below it.

Product Pros

  • Free Solar Heating: By harnessing the sun’s power, the Solar Sun Rings provide free heat to your pool or spa, reducing energy costs.
  • Heat Retention and Evaporation Reduction: The rings help to retain heat, allowing you to enjoy warm water even during cooler evenings. Additionally, they reduce water evaporation, conserving water and maintaining optimal chemical balance.
  • Durable in All Weather Conditions: The Solar Sun Rings are designed to withstand various weather conditions, including storms and windy conditions, thanks to their water anchors.
  • Compatibility with Salt Water or Chlorine Systems: These rings are compatible with salt water and chlorine systems, allowing hassle-free use with any pool or spa setup.
  • Easy Cleaning and Storage: The rings are easy to clean and store, providing convenience and peace of mind.

Product Cons

  • Size Limitation: The Solar Sun Rings have specific dimensions (60 x 2 inches), which may not be suitable for larger pools or spas.

Best Floating Thermal Blanket for Hot Tub

Product Specifications

  • Size: 6 x 7 feet
  • Colour: Beige
  • Material: Foam
  • Brand: Spa Tender
  • Product Dimensions: 84″L x 72″ W

Product Description

The Floating Thermal Blanket 7’x6′ x3/8″ by Spa Tender is designed to protect your hot tub and reduce heating expenses. With its durable 3/8″ thick layer of high-density foam, it safeguards your hot tub from damage and prevents unnecessary heat loss. This easy-to-use floating blanket is perfect for most hot tubs, locking in heat and reducing water evaporation.

Product Features

The Floating Thermal Blanket 7’x6′ x3/8″ offers a range of features to enhance your hot tub experience:

  • Durable Material: The Thermaltech foam used in this blanket is a 3/8″ thick layer of high-density foam, providing exceptional durability to protect your hot tub from damage. It is designed to withstand weather changes and defend your hot tub cover from chemical damage.
  • Perfect Fit: The Spatender spa blanket is designed to be an ideal fit for most hot tubs. Place it on the filled hot tub and cut it with scissors to adjust it to the desired size. Once in place, it effectively locks in the heat at the surface level and prevents water evaporation.
  • Energy-Saving Heat Retention: The Floating Thermal Blanket helps you save on energy expenses by reducing heat loss. It traps the heat inside the hot tub, preventing it from escaping. Most heat loss occurs through evaporation, which is significantly reduced by using this blanket.
  • Suitable for Summer or Winter: The versatility of the Floating Thermal Blanket makes it perfect for use in both summer and winter. During cool nights, it keeps the tub warm and cosy. Additionally, it enhances the appearance of your hot tub and prevents debris from falling into the water.
  • Protection for Your Expensive Cover: Hot tub covers can be costly, and the Floating Thermal Blanket helps protect your investment. As the body floats on the water’s surface, it acts as a protective barrier, preventing evaporation and the release of gases that can deteriorate your hot tub cover and headrests.

Product Pros

  • Durable and Protective: The 3/8″ thick high-density foam construction of the Floating Thermal Blanket ensures durability and protection for your hot tub.
  • Easy to Use and Customize: The size of this floating blanket may be readily altered with scissors to accommodate the majority of hot tubs.
  • Versatile All-Year Use: Whether in summer or winter, this blanket maintains the water temperature, keeping your hot tub warm and preventing debris from entering the water.
  • Protective of Your Hot Tub Cover: The Floating Thermal Blanket protects your expensive hot tub cover from damage caused by chemicals and gases.

Product Cons

Best Madholly16-mil Hot Tub Thermal Blanket

Product Specifications

  • Size: 7 FT Dia
  • Colour: Blue
  • Material: Polyethylene (PE)
  • Brand: MADHOLLY
  • Product Dimensions: 82.7″L x 82.7″ W

Product Description

The Spa and Hot Tub Cover – 16-mil Hot Tub Thermal Blanket by MADHOLLY is a high-quality insulation solution designed to enhance heat preservation and energy efficiency for your round hot tub. With its 16-mil thickness and durable construction, this thermal blanket provides excellent heat retention and water conservation. It is the perfect accessory to optimize the performance and enjoyment of your outdoor hot tub.

Key Features

  • Trim to Fit: The thermal solar blanket cover has a diameter of 7ft, fitting most inflatable round-style hot tubs. For tubs with irregular shapes, you can easily trim the body to the desired size by placing it over the hot tub and making a mark to cut along.
  • 16 MIL Thickness: Unlike general spa hot tub solar blankets, this thermal blanket utilizes a thicker material of 16 mils. This thickness enhances its heat preservation and water retention capabilities. The bubbles on the cover will not crack or fall off, ensuring long-lasting performance.
  • Time and Money Saving: Using the 16-mil thermal blanket cover can significantly reduce the heating time of your hot tub, saving both time and money. The cover’s efficient insulation properties minimize heat loss, allowing you to enjoy energy savings. Additionally, it helps reduce condensation on the hot tub cover.
  • Multi-functional: The round solar cover offers various benefits for your hot tub. It effectively prevents up to 95% of water evaporation loss, maintaining water temperature and conserving water resources. The cover absorbs the heat energy of the sun’s rays, reducing the time required to heat the water for your subsequent use.
  • Bubble-side Down: To utilize the thermal blanket properly, place the bubble side of the solar blanket close to the water surface, ensuring the smooth side faces up. This configuration prevents dust accumulation and reduces condensation and freezing on the edge of the hot tub.


  • Enhanced Heat Preservation: The 16-mil thermal blanket cover provides excellent insulation, helping to preserve the heat in your hot tub for extended periods.
  • Water Conservation: By preventing water evaporation, the cover reduces the need for frequent refilling and conserves water resources.
  • Time and Cost Savings: The efficient heat retention properties of the thermal blanket reduce heating time and lower energy costs.
  • Condensation Reduction: Using the cover minimizes condensation on the hot tub cover, reducing the chances of moisture-related damage.
  • Easy Customization: The trim-to-fit feature allows you to adjust the cover to fit the specific dimensions of your round hot tub.


  • Size Limitation: This thermal blanket is designed for round hot tubs with a diameter of 7ft, which may not accommodate larger or differently shaped hot tubs.

Best Sun2Solar Blue Thermal Blanket for Hot Tub

Product Specifications

  • Size: 7′ x 7′ Square
  • Colour: Blue
  • Material: Resin
  • Brand: Sun2Solar
  • Product Dimensions: 84″L x 84″ W

Product Description

The Sun2Solar Blue 7-Foot-by-7-Foot Square Solar Cover is designed to retain heat for in-ground and above-ground square swimming pools and spas. The attractive blue design, made from a film of tiny bubbles, collects and has heat, allowing you to enjoy warmer pool water. It also minimizes water evaporation, saving water and reducing maintenance. Jump into the warmth and extend your swimming season with this easy-to-use solar cover.

Product Features

The Sun2Solar Blue 7-Foot-by-7-Foot Square Solar Cover offers a range of features to enhance your pool experience:

  • Attractive Blue Design: The solar cover features an appealing blue design that not only enhances the look of your pool but also helps to collect and retain heat from the sun’s rays, even on cooler days and nights.
  • Minimize Water Evaporation: A sun cover may prevent up to 95% of pool water evaporation. This means less water is lost in the environment, allowing you to fill your swimming pool less frequently and enjoy it more.
  • Jump into Warmth: With the Sun2Solar solar cover, you can confidently jump into your pool without the usual toe dip. The water is kept warm and appealing for your pleasure thanks to the cover’s assistance in preserving water temperature. It is also easy to put on and take off, allowing you more time to enjoy your pool.
  • Heat Retention: After a fun day in the sun, ensure that the warmth generated throughout the day is not lost when the sun sets. Placing the solar cover back on the water can retain the heat and prevent your pool’s temperature from dropping too much overnight.
  • Trim to Fit: The Sun2Solar solar body can be easily trimmed to fit your uniquely shaped pool. Use a marker and sharp scissors to trace and cut along the desired Shape. Trim confidently, knowing it won’t affect the manufacturer’s warranty.

Product Pros

  • Efficient Heat Retention: The tiny bubbles in the solar cover collect and retain heat, ensuring your hot tub water stays warm and comfortable.
  • Water Conservation: By minimizing water evaporation, the solar cover helps to reduce the frequency of hot tub refills, saving water resources and reducing maintenance efforts.
  • Easy to Use: The solar cover is designed for easy application and removal, allowing for convenient usage and quick access to your hot tub.
  • Customizable Fit: The cover can be trimmed to fit the unique Shape of your hot tub, ensuring a perfect fit and maximum coverage.

Product Cons

How to Install and Use a Thermal Blanket for Hot Tubs

Installing a thermal blanket for your hot tub is a simple process:

  • Measure your hot tub’s dimensions to ensure you purchase the right-sized blanket.
  • Clean the hot tub’s surface to remove any debris or dirt.
  • Unroll the thermal blanket on the water’s surface, ensuring it covers the entire tub.
  • Attach the blanket securely using the provided straps, clips, or weights.
  • Trim any excess material if necessary.
  • Whenever you use the hot tub, remove the covering and store it in a dry and clean location.

Tips for Maintaining and Cleaning Your Thermal Blanket

  • To keep your thermal blanket in optimal condition:
  • Regularly remove debris and clean the blanket using mild detergent and water.
  • Steer clear of employing solid chemicals that might harm the material.
  • Rinse the blanket thoroughly after cleaning to remove any residue.
  • Allow the blanket to dry completely before reattaching it to the hot tub.
  • Inspect the blanket periodically for signs of wear and tear and replace it if necessary.


Investing in the best thermal blanket for your hot tub is a wise decision that enhances your overall desirable tub experience. It improves energy efficiency, prolongs the hot tub season, and protects your investment. Choose a thermal blanket that meets your requirements and tastes by considering the criteria covered in this article. Using a thermal blanket lets you enjoy your hot tub while minimizing energy consumption and maximizing comfort.

Frequently Asked Questions

Why Choose a Thermal Blanket for My Hot Tub?

Thermal blankets provide enhanced insulation, extend heat retention, conserve energy, and protect your hot tub from debris.

Are Thermal Blankets Compatible with All Hot Tubs?

Thermal blankets are compatible with most hot tubs. Ensure you choose the right size for maximum effectiveness.

How Do Thermal Blankets Help Save Energy?

Thermal blankets reduce heat loss and evaporation, resulting in lower energy consumption for maintaining the hot tub’s temperature.

Can I Use a Thermal Blanket in All Seasons?

Thermal blankets are suitable for year-round use, providing insulation in colder months and reducing evaporation in warmer months.

How Often Should I Replace My Thermal Blanket?

The lifespan of a thermal blanket varies, but with proper maintenance, it can last between 3 to 5 years. Replace if significantly worn or insulation is compromised.

Amazon and the Amazon logo are trademarks of, Inc, or its affiliates.

Leave a Reply

Your email address will not be published. Required fields are marked *