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 Cal Spas models 77″–94″ across the top. $1,195 with free shipping, usually at your front door within 3–5 business days.
or
3-year limited warranty · In 100+ hot tub showrooms
Browse all 37 Cal Spas models
AIRCAP 1™Made for a lighter lift.
Watch it open and close on a cover lifter
37 Cal Spas models
Find your model.
See your size.
The AIRCAP 1™ fits a range of Cal 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 Cal Spas?
What size hot tub cover fits a Cal Spas Platinum Pismo?
The Cal Spas Platinum Pismo, 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 a Cal Spas Platinum Arcata?
The Cal Spas Platinum Arcata, 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 a Cal Spas Platinum Huntington?
The Cal Spas Platinum Huntington, 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 a Cal Spas Platinum Laguna?
The Cal Spas Platinum Laguna, 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 a Cal Spas Platinum Ventura?
The Cal Spas Platinum Ventura, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Platinum Avila?
The Cal Spas Platinum Avila, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Platinum Carmel?
The Cal Spas Platinum Carmel, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Platinum LaJolla?
The Cal Spas Platinum LaJolla, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Costa X-Series?
The Cal Spas Costa X-Series, 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 a Cal Spas Baja X-Series?
The Cal Spas Baja X-Series, 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 a Cal Spas Tropical X-Series?
The Cal Spas Tropical X-Series, 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 a Cal Spas Pacifica X-Series?
The Cal Spas Pacifica X-Series, 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 a Cal Spas BelAir X-Series?
The Cal Spas BelAir X-Series, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Atlantic X-Series?
The Cal Spas Atlantic X-Series, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Cancun X-Series?
The Cal Spas Cancun X-Series, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Avalon X-Series?
The Cal Spas Avalon X-Series, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Malibu X-Series?
The Cal Spas Malibu X-Series, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Escape Baja?
The Cal Spas Escape Baja, 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 a Cal Spas Escape Costa?
The Cal Spas Escape Costa, 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 a Cal Spas Escape Tropical?
The Cal Spas Escape Tropical, 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 a Cal Spas Escape Pacifica?
The Cal Spas Escape Pacifica, 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 a Cal Spas Escape Avalon?
The Cal Spas Escape Avalon, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Escape BelAir?
The Cal Spas Escape BelAir, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Escape Atlantic?
The Cal Spas Escape Atlantic, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Escape Cancun?
The Cal Spas Escape Cancun, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Escape Malibu?
The Cal Spas Escape Malibu, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Malibu EC-754DL?
The Cal Spas Malibu EC-754DL, which measures about 87" x 87", takes the AIRCAP 1 Medium, which fits square hot tubs measuring 86 to 88 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 a Cal Spas Windsor?
The Cal Spas Windsor, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Pacifica Plus?
The Cal Spas Pacifica Plus, 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 a Cal Spas Tropical Plus?
The Cal Spas Tropical Plus, 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 a Cal Spas Atlantic Plus?
The Cal Spas Atlantic Plus, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Bel Air Plus?
The Cal Spas Bel Air Plus, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Avalon Plus?
The Cal Spas Avalon Plus, which measures about 93" x 93", takes the AIRCAP 1 X-Large, which fits square hot tubs measuring 92 to 94 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 a Cal Spas Hawaiian PZ-620L?
The Cal Spas Hawaiian PZ-620L, 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 hot tub cover fits a Cal Spas Maui PZ-620B?
The Cal Spas Maui PZ-620B, 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 hot tub cover fits a Cal Spas Hawaiian Plus PPZ-634L?
The Cal Spas Hawaiian Plus PPZ-634L, 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 hot tub cover fits a Cal Spas Maui Plus PPZ-634B?
The Cal Spas Maui Plus PPZ-634B, 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 Cal Spas hot tub?
Cal Spas has one of the widest line-ups in our fitter — thirty-seven models across the Platinum, X-Series, Escape, Plus and Patio ranges. They cluster into just four AIRCAP 1™ sizes, so matching a cover is simpler than the model count suggests: the compact 78" Patio and Patio Plus shells take the smallest size, the Pismo, Arcata, Huntington and Laguna cabinets the middle one, and the Ventura, Avila, Carmel and LaJolla cabinets the largest.
Here is how the 37 Cal Spas models in our fitter map to AIRCAP 1™ sizes:
- The Hawaiian PZ-620L, Maui PZ-620B, Hawaiian Plus PPZ-634L and Maui Plus PPZ-634B each take the AIRCAP 1™ XX-Small, which fits square spas 77–79".
- The Platinum Pismo, Platinum Arcata, Platinum Huntington, Platinum Laguna, Costa X-Series, Baja X-Series, Tropical X-Series, Pacifica X-Series, Escape Baja, Escape Costa, Escape Tropical, Escape Pacifica, Pacifica Plus and Tropical Plus each take the AIRCAP 1™ Small, which fits square spas 83–85".
- The Malibu EC-754DL takes the AIRCAP 1™ Medium, which fits square spas 86–88".
- The Platinum Ventura, Platinum Avila, Platinum Carmel, Platinum LaJolla, BelAir X-Series, Atlantic X-Series, Cancun X-Series, Avalon X-Series, Malibu X-Series, Escape Avalon, Escape BelAir, Escape Atlantic, Escape Cancun, Escape Malibu, Atlantic Plus, Bel Air Plus and Avalon Plus and Windsor each take the AIRCAP 1™ X-Large, which fits square spas 92–94".
In the Patio and Patio Plus ranges, the L and B suffixes are lounge versus bench seating in the same 78" shell — a Hawaiian and a Maui share one footprint, as do their Plus twins — so the cover is the same whichever seating you chose.
Two different Malibus — check your SKU. Cal changed the Malibu’s footprint. The current Malibu (EC-867DL, and Malibu-X EC-867DLX) is 93" square and takes the X-Large. The earlier one, sold as EC-754DL, EC-754DLX and EP-760DL, is 87" square and takes the Medium — an X-Large would overhang it by several inches. Cal’s own line drawings print 87" x 87" x 39½" for the EC-754DL and 93" x 93" x 40½" for the EC-867DL. The SKU is on the silver plate inside the cabinet door; if you cannot find it, measure across the top.
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.
Cal Spas models the AIRCAP 1™ does not fit. The rest of the Patio range is rectangular rather than square — the Balboa and Balboa Plus are 54" × 78", the Kona and Kona Plus 64" × 84", and the Aloha 34" × 78". The two Deck models, the Newporter X-Series and El Grande X-Series, are 93" × 130" and 93" × 131". The five Cold Plunge spas are cold plunges rather than hot tubs — even the Dual Zone, which is square at 93". The Swim-Pro, Family Fun, Freestyle, Commander, Depth-X and Olympian are swim spas, 151" to 210" long. The AIRCAP 1™ is built for square cabinets from 77 to 94 inches.
With thirty-seven Cal Spas cabinets in the fitter it is worth measuring before you order. Cal Spas occasionally revises a footprint between model years, so check your own tub side to side across the top.
Measure your own spa before ordering — cabinet sizes can change between model years. The SureFit™ measuring guide walks through it in two measurements, and works for any square hot tub from 77″ to 94″, Cal Spas or not.
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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.