Water-resistant & lightweight
AirLoc™ panels have no foam core to soak up water, so the cover weighs the same out of the box and years later: 35–40 lb, depending on size.
Learn about water resistanceNo foam core to waterlog, a light 35–40 lb. Fits square Alps Spas models 77″–94″ across the top. $1,195 with free shipping, usually at your front door within 3–5 business days.
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3-year limited warranty · In 100+ hot tub showrooms
Browse all 10 Alps Spas models
AIRCAP 1™Made for a lighter lift.
Watch it open and close on a cover lifter
10 Alps Spas models
Find your model.
See your size.
The AIRCAP 1™ fits a range of Alps Spas hot tubs. Find your model below and click Buy Now to get the right size.
Every AIRCAP 1™ size is $1,195 with free shipping to all 50 states — usually arrives in 3–5 business days.
Don't see your model?
Use our SureFit™ easy-measure guide to find the right AIRCAP 1™ cover for any square hot tub from 77″ to 94″.
Need help? Contact thrml. to confirm your fit before you order.
Have a different brand? See all spa brands
What customers are saying
Awesome product, my kids don’t complain about the cover anymore…
Best $$ I ever spent!
What this company has created in terms of an original and revolutionary product is nothing short of amazing.
For a reasonable price, I can cover my spa with a top that won’t get musty.
Nice and lightweight
…set up was super easy and took about 15 min total.
Installation was a breeze and we love it already!
Great customer service still matters, and frankly, not enough companies deliver it anymore. This company does, and that deserves recognition.
Do not wait to buy one.
01 / 09
Thoughtfully engineered
Built to solve the
problems of foam.
Three practical reasons to rethink your next hot tub cover.
Consistent insulation
The sealed AirLoc™ air core has nothing in it to absorb water, so its insulation stays consistent for the life of the cover.
See how AIRCAP insulatesReplaceable skirt system
Three ZipTech™ skirt depths come in the box, and a worn or damaged skirt can be replaced on its own, without replacing the whole cover.
See how ZipTech worksEvery detail matters
Purchase with confidence.
30-day returns
Fits or we make it right. Wrong size or changed your mind? Swap it or return it within 30 days of delivery. We send a prepaid return label and there’s no restocking fee. Covers must come back in like-new condition with all parts. Bought from an authorized retailer? That retailer’s return policy applies.
How the fit guarantee works3-year limited warranty
Backed by a three-year limited warranty against manufacturing defects.
Warranty detailsFit assistance
Use Spa Fitter™ or SureFit™, or contact us before you order and we will confirm your size.
Get fit helpSizing FAQ: which AIRCAP 1™ fits your Alps Spas?
What size hot tub cover fits an Alps Spas Rainier?
The Alps Spas Rainier, which measures about 84" x 84", takes the AIRCAP 1 Small, which fits square hot tubs measuring 83 to 85 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
What size hot tub cover fits an Alps Spas Himalaya?
The Alps Spas Himalaya, which measures about 84" x 84", takes the AIRCAP 1 Small, which fits square hot tubs measuring 83 to 85 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
What size hot tub cover fits an Alps Spas Q-SL?
The Alps Spas Q-SL, which measures about 84" x 84", takes the AIRCAP 1 Small, which fits square hot tubs measuring 83 to 85 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
What size hot tub cover fits an Alps Spas Q-DL?
The Alps Spas Q-DL, which measures about 84" x 84", takes the AIRCAP 1 Small, which fits square hot tubs measuring 83 to 85 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
What size hot tub cover fits an Alps Spas Q-OS?
The Alps Spas Q-OS, which measures about 84" x 84", takes the AIRCAP 1 Small, which fits square hot tubs measuring 83 to 85 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
What size hot tub cover fits an Alps Spas Q-90?
The Alps Spas Q-90, which measures about 90" x 90", takes the AIRCAP 1 Large, which fits square hot tubs measuring 89 to 91 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
What size hot tub cover fits an Alps Spas K2?
The Alps Spas K2, which measures about 90" x 90", takes the AIRCAP 1 Large, which fits square hot tubs measuring 89 to 91 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
What size hot tub cover fits an Alps Spas Everest (Tigra XLS)?
The Alps Spas Everest (Tigra XLS), which measures about 90" x 90", takes the AIRCAP 1 Large, which fits square hot tubs measuring 89 to 91 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
What size hot tub cover fits an Alps Spas Olympus (Olympus XLS)?
The Alps Spas Olympus (Olympus XLS), which measures about 90" x 90", takes the AIRCAP 1 Large, which fits square hot tubs measuring 89 to 91 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
What size hot tub cover fits an Alps Spas Alpine?
The Alps Spas Alpine, which measures about 78" x 78", takes the AIRCAP 1 XX-Small, which fits square hot tubs measuring 77 to 79 inches across. Measure your spa side to side across the top of the cabinet to confirm the size before ordering.
What size AIRCAP 1™ fits your Alps Spas hot tub?
Alps Spas builds its current square hot tubs in just two footprints, which makes finding a replacement cover straightforward. The Classic Series Rainier and Himalaya, together with the Q-Series Q-SL, Q-DL and Q-OS, all measure 84 inches square. The larger Q-90, K2 and Everest all measure 90 inches square. We also list older models that are no longer in Alps's current lineup: the Olympus, the Tigra XLS and the Alpine.
Here is how each Alps model on this page maps to an AIRCAP 1™ size:
- The Alps Alpine measures 78" × 78", so it takes the AIRCAP 1™ XX-Small, which fits 77–79" spas.
- The Alps Rainier, Himalaya, Q-SL, Q-DL and Q-OS each measure 84" × 84", so they take the AIRCAP 1™ Small, which fits 83–85" spas.
- The Alps Q-90, K2, Everest (Tigra XLS) and Olympus (Olympus XLS) each measure 90" × 90", so they take the AIRCAP 1™ Large, which fits 89–91" spas.
Older Alps models. Alps's own model page for the Olympus, which it also sold as the Olympus XLS, printed it at 90" × 90", the same size as today's Q-90, K2 and Everest. Its two loungers run along opposite sides of the tub. The Tigra XLS appears in an older Alps owner's manual, which prints it at 90" × 90". The manual's photo of it shows the same seat layout as today's Everest, so the two share one listing. The Alpine was a square poly spa: Alps's owner's manual for the Alpine and Blue Ridge prints it at 78" × 78" and pictures it as a square tub with rounded corners. We have no photo of it clear enough to show, so it is listed without one. Measure yours before ordering.
Every AIRCAP 1™ ships with the Ziptech™ modular skirt system, so you can zip on the right skirt depth for your cabinet instead of ordering a custom cover.
Not seeing your model? The Alps Innsbruck is rectangular, the Ciara measures 82" × 77.5" (the older Ciara XLS, 84" × 78"), the retired Avalanche and the acrylic Aspen also measure 82" × 77.5", and the Teton XLS measures 82" × 66". The Blue Ridge, which shares the Alpine's owner's manual, is printed at 78" × 78" but is round. The Party Spa, Trainer, Denali and Matterhorn are swim and exercise spas — none of them square, so they fall outside the AIRCAP 1™ range. We found no printed size for the Newport, the Q-80 or the older poly Aspen, so they aren't listed; if you own one, measure it before ordering. Use the SureFit™ measuring guide to check your hot tub against our sizes.
Your cover. Your way.
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$1,195 with free shipping, usually at your front door within 3–5 business days.
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Available in over 120 authorized hot tub showrooms across 34 states.