Do you notice your hot tub water cooling down much faster than it should? There is nothing worse than stepping outside for a relaxing soak, only to find that your water has lost its heat. You spend a lot of money on electricity to keep that water warm, so letting that heat escape into the chilly night air is essentially throwing money away.
Choosing the right thermal blanket can feel overwhelming because there are so many materials, sizes, and thicknesses on the market today. Many owners struggle to find a cover that is both easy to handle and effective at locking in warmth. A poor choice often leads to a heavy, waterlogged mess that is difficult to remove and fails to keep your energy bills low.
In this guide, we will clear up the confusion and show you exactly what to look for when shopping for a thermal blanket. You will learn how to pick the perfect fit for your specific hot tub and discover which materials offer the best insulation for your climate. By the end of this post, you will feel confident in your ability to choose a product that saves you money and keeps your water hot all year long.
Let’s dive into the essential factors you need to consider before you make your next purchase.
Top Thermal Blanket For Hot Tub Recommendations
- 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. (Tips: The cover may have creases from folding. Lay it flat and place heavy objects on top for a few hours to help it flatten out).
- 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.
- 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.
- 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.
- - 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 7x7 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.
- hot tub thermal blanket: you will receive 1 solar pool 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
- hot tub blanket: the hot tub cover 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: hot tub bubble 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: thermal blanket for hot tub 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
- hot tub solar blanket: solar cover for hot tub 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
- 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.
- 🏊【Energy Saving and Environmental Protection】Solar 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 Materials】Swimming 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 will】You 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 Application】Inground 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 Guarantee】You 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!
- EXTEND YOUR SWIM SEASON – Harness the power of the sun. Our solar blanket's thousands of tiny insulating bubbles capture and retain heat, effectively warming your pool water during the day and reducing heat loss at night. Enjoy a comfortably warm swim even on cooler days or extend your swimming season well into the fall.
- SAVE WATER & CUT COSTS – Stop watching your water and money evaporate. This floating pool cover significantly reduces water evaporation by up to 95% and acts as a protective shield against falling leaves, dirt, and debris. Spend less time cleaning and more time enjoying a pristine pool.
- BUILT FOR LASTING DURABILITY – Don't settle for flimsy covers that crack and fade. At 12 mils thick, our heavy-duty pool cover is significantly more tear-resistant and durable than standard 4-10 mil options. Engineered to withstand intense UV exposure without warping, it provides reliable, season-after-season performance.
- CUSTOMIZABLE FIT FOR ANY SHAPE – Perfect for above-ground, in-ground pools, or spas. Unlike rigid covers, this flexible bubble wrap can be easily trimmed with household scissors to fit any unique or irregular shape, from round and oval to kidney-shaped. No complex tools or professional installation required.
- WORRY-FREE PURCHASE – Simply select the size closest to your pool's diameter and trim for a perfect fit. Made from waterproof, UV-resistant polyethylene that won't degrade in sun or water. Your satisfaction is guaranteed by our responsive customer support team—if you have any issues, we're here to make it right.
- Hot Tub/ SPA/ POOL Insulation: Say goodbye to sky-high heating bills!!! 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, If you use a heater for you spa. it can reduce the heating time by 30% and save electricity bills
- Keep Hot Tub Spa Water Clean: Solar bubbles hot tub spa covers can float on water to keep the water temperature during heating or not use. Don't need to add or change water even passed a few day for last use because we can reduce water evaporation by 95% and keep dirt away
- 16 MIL Thickness: Most hot tub spa covers available on the market are typically 8-12 MIL thick. In contrast, our solar pool covers boast a thickness of 16 MIL, anti-wear,light,soft and good toughness,perfect fit to the water surface,easy to fold and store
- Perfect for Inground or Above Ground Hot Tub or Swimming Pools: Perfect for almost kinds of inflatable outdoor hot tub spa, bath tub, massage pool, swimming pool on market
- Bubble-side Down: You need to put the bubble side face 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
- Heavy-duty for longer service life - Thick 16 mil film (16/1000")
- Reduces evaporation heat loss up to 95%
- Protects spa cover from water absorption
- Surface coverage up to 7'x7' (84"x84") - trim-to-fit
- Genuine ThermoFloat brand by Spa Depot
The Ultimate Buying Guide: Choosing the Best Thermal Blanket for Your Hot Tub
A thermal blanket acts like a cozy sweater for your hot tub. It floats directly on the water’s surface to keep heat from escaping. If you want to save money on your electric bill and keep your water warm, this accessory is a must-have. Use this guide to find the perfect fit for your spa.
Key Features to Look For
When shopping, look for a blanket that fits your specific tub size. Most blankets come in standard sizes, but you can trim many of them with household scissors. You should also look for a design that is easy to remove. Since you will handle it daily, a lightweight model is much easier to manage than a heavy one.
Important Materials
Most thermal blankets consist of high-quality polyethylene. This material is durable and resists damage from hot water chemicals. You will often see a bubble-wrap style design. These tiny air pockets trap heat effectively. Some premium blankets include an extra UV-resistant coating. This prevents the sun from breaking down the material over time, which helps the blanket last for several seasons.
Factors That Improve or Reduce Quality
Quality usually comes down to thickness and density. A thicker blanket provides better insulation. If the material is too thin, heat will leak out into the air. Another factor is how well the blanket resists mold and mildew. A high-quality blanket will dry quickly after you remove it from the water. Cheap models might tear easily or lose their bubbles after a few months of use. Always check for reviews that mention long-term durability.
User Experience and Use Cases
Most users notice a difference in their energy bills almost immediately. A thermal blanket works best when you use it alongside a traditional hard cover. The blanket traps the heat, while the hard cover protects the spa from rain and debris. If you live in a cold climate, the blanket is essential for maintaining water temperature during the winter. It is also helpful for people who use their hot tub every day, as it speeds up the heating process after you finish a soak.
Frequently Asked Questions
Q: Do I need a thermal blanket if I already have a hard cover?
A: Yes. A hard cover protects the tub, but a thermal blanket adds an extra layer of insulation. It stops heat from evaporating into the air gap under your hard cover.
Q: How do I clean my thermal blanket?
A: Simply rinse it with a garden hose. If it gets dirty, use a soft brush and mild soap. Let it air dry before putting it back on the water.
Q: Can I trim the blanket to fit my tub?
A: Most models are designed to be trimmed. Use a sharp pair of scissors to cut the blanket to the exact shape of your spa.
Q: Will the chemicals in my hot tub damage the blanket?
A: High-quality thermal blankets are made to resist chlorine and bromine. However, you should always ensure your chemical levels are balanced to protect both the blanket and your skin.
Q: How long does a thermal blanket usually last?
A: With proper care, a good blanket lasts between one and three years. Keep it out of direct sunlight when it is not on the water to extend its life.
Q: Does the blanket go bubble-side up or down?
A: Place the bubble side down against the water. This creates a seal that traps the heat more effectively.
Q: Will it stop my hot tub water from evaporating?
A: Yes. The blanket creates a barrier that prevents water from turning into steam, which saves you from having to refill the tub as often.
Q: Is the blanket heavy?
A: No. Most thermal blankets are very lightweight. You can fold or roll them up in seconds.
Q: Can I use a thermal blanket in the summer?
A: You can, but it is less necessary. Many people remove them in the summer to let the water cool down naturally.
Q: Does a thermal blanket replace a hard cover?
A: No. A thermal blanket is an accessory. You still need a hard cover for safety, security, and protection from the elements.