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THE MODERN HOT TUB COVER
BUILT TO LAST.

10X More Durable - Doesn't get Heavy Like Foam Covers- Higher R Value 

Thrml logo in black and white

TM

Unbox. Inflate. Zip.

Using our ZipTech™ waterproof zippers you can install your AIRCAP 1™ in 15 minutes or less.

Simply inflate the two halves and then zip on one of the three included custom length skirts to fit your spa.

Our four sizes are designed to fit over 90% of hot tubs on the market, so no more long lead times or replacing foam covers every 3-5 years. Check out our Spa Fitter® to find the AIRCAP 1™ for you.

AIRCAP™ 1 replacement cover, pump, skirt, and box

ZIPTECH™

Our patented ZipTech™ technology allows for ultimate customization and user friendly experience.

ENERGY EFFICIENT

Our Patented AirLoc™ technology provides 3x the insulation value of a traditional foam cover during the life of ownership.

DURABILITY

The AIRCAP 1™ uses AirLoc™ drop stich technology to build the longest lasting, strongest, most durable hot tub cover ever built.

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SAY GOOOBYE TO FOAM COVERS.

Discover our innovative AIRCAP 1™ Hot Tub cover with AirLoc™ technology.

 

By incorporating this advanced technique seen in inflatable paddle boards , we created a lighter, stronger, and more durable cover that provides superior protection over foam.

The AIRCAP™ will fit 90% of spas on the market. Select the size that corresponds with your hot tub dimensions and you will soon be enjoying the best hot tub cover ever built!

 

Upgrade your hot tub experience with a cover that combines strength and innovation.

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ZipTech™

ZipTech™ Technology features a robust zippered skirt designed for durability. We love dogs and we don't want them getting in trouble. If your dog likes to chew on your hot tub cover skirt, we made it replaceable. Experience the strength and resilience that ZipTech™ brings to the table.

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Hassle Free Returns
Free return or exchange within 30 days.
Easy as that.

Warranty
Built to last. Backed for 3 years against
manufacturing defects.

Buy With Confidence
If you change your mind,
we will make it right.

We Make Finding the Right Fit Easy With Surefit­®.

Ordering foam hot tub covers can be like getting a root canal.
All you need to find the right size AIRCAP 1™ is the length and width of your spa or proper fit existing cover and then choose one of the four sizes we offer. The AIRCAP 1™ is designed to be a semi-custom fit. You will receive and inflate your cover with the included dual action pump. Your cover will come with three different length skirts, choose the size that fits for you using our patent pending Ziptech™ skirt system. 

AIRCAP™ 1 hot tub replacement cover size guide
AIRCAP™ 1 replacement cover size guide

Spa Fitter®

Click on the brand of spa you own to use our easy Spa Fitter® guide.

Wellis spas replacement cover
Caldera Spas replacement cover
Hot Springs Spas replacement
Sundance Spas replacement cover
Bullfrog Spas replacement cover
Superior Wellness replacement cover
Cal Spas replacement cover
Viking Spas replacement cover
Artesian Spas replacement cover
Master Spas replacement cover
Arctic Spas replacement cover
Coast Spas replacement cover
Clearwater Spas replacement cover
Marquis Spas replacement cover
Jacuzzi replacement cover

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THE AIRCAP 1™

Upgrade your hot tub experience with the AIRCAP 1™. The most durable, lightweight and longest lasting hot tub cover on market. The AIRCAP 1™ arrives on your doorstep and can be installed on your hot tub in minutes. Never having to fuss with heavy, bacteria filled foam hot tub covers again.

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AirLoc™ Technology. Durability at It's Core.

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