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 Coast 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 41 Coast Spas models
AIRCAP 1™Made for a lighter lift.
Watch it open and close on a cover lifter
41 Coast Spas models
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See your size.
The AIRCAP 1™ fits a range of Coast Spas hot tubs, current and retired, plus models from NorthWind, a Coast sub-brand, and from Coast’s earlier Silhouette Spas line. 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.
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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.
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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 Coast Spas?
What size hot tub cover fits a Coast Spas Apex Lounge?
The Coast Spas Apex Lounge, which measures about 92" x 92", 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 Coast Spas Apex Bench?
The Coast Spas Apex Bench, which measures about 92" x 92", 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 Coast Spas Element Lounge?
The Coast Spas Element Lounge, which measures about 83.5" x 83.5", 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 Coast Spas Element Bench?
The Coast Spas Element Bench, which measures about 83.5" x 83.5", 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 Coast Spas Classic Freedom?
The Coast Spas Classic Freedom, which measures about 92" x 92", 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 Coast Spas Element Patio Bench?
The Coast Spas Element Patio Bench, 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 Coast Spas Element Patio Lounge?
The Coast Spas Element Patio Lounge, 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 Coast Spas Element Opulence L?
The Coast Spas Element Opulence L, which measures about 83.5" x 83.5", 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 Coast Spas Element Opulence B?
The Coast Spas Element Opulence B, which measures about 83.5" x 83.5", 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 Coast Spas Apex Opulence L?
The Coast Spas Apex Opulence L, which measures about 92" x 92", 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 Coast Spas Apex Opulence B?
The Coast Spas Apex Opulence B, which measures about 92" x 92", 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 Coast Spas Silhouette Lounge (2026 and later)?
The Coast Spas Silhouette Lounge (2026 and later), which measures about 77" x 77", 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 Coast Spas Silhouette Bench (2026 and later)?
The Coast Spas Silhouette Bench (2026 and later), which measures about 77" x 77", 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 Coast Spas Freedom Opulence?
The Coast Spas Freedom Opulence, which measures about 92" x 92", 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 Coast Spas Freedom Elite HP?
The Coast Spas Freedom Elite HP, which measures about 92" x 92", 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 Coast Spas Freedom Oasis LP?
The Coast Spas Freedom Oasis LP, which measures about 92" x 92", 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 Coast Spas Freedom Bench High Profile?
The Coast Spas Freedom Bench High Profile, which measures about 92" x 92", 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 Coast Spas Oasis Freedom B?
The Coast Spas Oasis Freedom B, which measures about 92" x 92", 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 Coast Spas Zenith?
The Coast Spas Zenith, which measures about 81.5" x 81.5", takes the AIRCAP 1 X-Small, which fits square hot tubs measuring 80 to 82 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 Coast Spas Vantage?
The Coast Spas Vantage, which measures about 81.5" x 81.5", takes the AIRCAP 1 X-Small, which fits square hot tubs measuring 80 to 82 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 Coast Spas Helios?
The Coast Spas Helios, which measures about 92" x 92", 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 Coast Spas Unity?
The Coast Spas Unity, which measures about 92" x 92", 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 Coast Spas Pacific?
The Coast Spas Pacific, which measures about 91" x 91", 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 a Coast Spas Lanai?
The Coast Spas Lanai, which measures about 90" x 90.5", 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 a Coast Spas Bahama?
The Coast Spas Bahama, which measures about 91" x 91.5", 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 Coast Spas Manhattan?
The Coast Spas Manhattan, which measures about 91" x 91", 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 a Coast Spas Islander?
The Coast Spas Islander, which measures about 76.5" x 76.5", 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 Coast Spas Paradise?
The Coast Spas Paradise, which measures about 81" x 81.5", takes the AIRCAP 1 X-Small, which fits square hot tubs measuring 80 to 82 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 Coast Spas NorthWind 7B / 7C?
The Coast Spas NorthWind 7B / 7C, which measures about 83" x 83", 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 Coast Spas NorthWind 7L?
The Coast Spas NorthWind 7L, which measures about 83" x 83", 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 Coast Spas NorthWind 8B / 8C?
The Coast Spas NorthWind 8B / 8C, 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 a Coast Spas NorthWind 8L?
The Coast Spas NorthWind 8L, 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 a Coast Spas NorthWind NWZ?
The Coast Spas NorthWind NWZ, which measures about 81.5" x 81.5", takes the AIRCAP 1 X-Small, which fits square hot tubs measuring 80 to 82 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 Coast Spas NorthWind NWV?
The Coast Spas NorthWind NWV, which measures about 81.5" x 81.5", takes the AIRCAP 1 X-Small, which fits square hot tubs measuring 80 to 82 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 Coast Spas NorthWind NWH?
The Coast Spas NorthWind NWH, which measures about 92" x 92", 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 Coast Spas NorthWind NWU?
The Coast Spas NorthWind NWU, which measures about 92" x 92", 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 Coast Spas NorthWind NWF?
The Coast Spas NorthWind NWF, which measures about 92" x 92", 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 Coast Spas NorthWind Apex?
The Coast Spas NorthWind Apex, which measures about 92" x 92", 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 Coast Spas NorthWind Element?
The Coast Spas NorthWind Element, which measures about 83.5" x 83.5", 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 Coast Spas Silhouette SC 731 / SL 731 / SC 748 / SL 748?
The Coast Spas Silhouette SC 731 / SL 731 / SC 748 / SL 748, which measures about 83" x 83", 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 Coast Spas Silhouette SC 854 / SL 854?
The Coast Spas Silhouette SC 854 / SL 854, 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 AIRCAP 1™ fits your Coast Spas hot tub?
Coast Spas organises its current hot tubs into the Element, Apex, Classic, Silhouette and Freedom ranges, and eighteen of today’s models fit an AIRCAP 1™. Our fitter lists forty-one Coast models in all: those eighteen, ten retired Coast models, eleven from NorthWind, a Coast sub-brand, and two from Coast’s earlier Silhouette Spas line. In today’s range the two Silhouette models are the most compact cabinets at 77" square, the Element models sit in the middle of the range, and the Apex and Freedom families share the largest 92" footprint with the Classic Freedom.
Here is how the 41 Coast Spas models in our fitter map to AIRCAP 1™ sizes:
- The Silhouette Lounge (2026 and later), Silhouette Bench (2026 and later) and Islander each take the AIRCAP 1™ XX-Small, which fits square spas 77–79".
- The Zenith, Vantage, Paradise, NorthWind NWZ and NorthWind NWV each take the AIRCAP 1™ X-Small, which fits square spas 80–82".
- The Element Lounge, Element Bench, Element Patio Bench, Element Patio Lounge, Element Opulence L, Element Opulence B, NorthWind 7B / 7C, NorthWind 7L, NorthWind Element and Silhouette SC 731 / SL 731 / SC 748 / SL 748 each take the AIRCAP 1™ Small, which fits square spas 83–85".
- The Pacific, Lanai, Manhattan, NorthWind 8B / 8C, NorthWind 8L and Silhouette SC 854 / SL 854 each take the AIRCAP 1™ Large, which fits square spas 89–91".
- The Apex Lounge, Apex Bench, Classic Freedom, Apex Opulence L, Apex Opulence B, Freedom Opulence, Freedom Elite HP, Freedom Oasis LP, Freedom Bench High Profile, Oasis Freedom B, Helios, Unity, Bahama, NorthWind NWH, NorthWind NWU, NorthWind NWF and NorthWind Apex each take the AIRCAP 1™ X-Large, which fits square spas 92–94".
Don't read too much into the trim names — Elite, Opulence, Oasis, High Profile and the Lounge/Bench split are seating and jetting choices, not different footprints. The Freedom Opulence, Freedom Elite HP, Freedom Oasis LP, Freedom Bench High Profile and Oasis Freedom B all sit on the same 92" square cabinet — the high-profile and low-profile versions differ only in cabinet height, which the skirt takes care of — so they all wear the identical cover.
Silhouette owners: check which Silhouette you have. Coast’s current Silhouette Bench and Silhouette Lounge, new for 2026, are 77" square and 29" tall and take the XX-Small. From 2013 Coast also sold an earlier, bigger line under the Silhouette Spas name. Silhouette Spas printed the SC 731 at 83" square and 35" tall, which takes the Small, and the SC 854 at 90" square and 36" tall, which takes the Large. Their footprints and capacities match NorthWind’s 7-foot and 8-foot tubs, so the pictures we show for them are of those NorthWind twins. We have read Silhouette’s own figures for the SC 731 and SC 854 only: the SL 731, SC 748 and SL 748 are listed with the 7-foot tub, and the SL 854 with the 8-foot one, from their model numbers and their NorthWind twins, so measure one of those before ordering. An older Silhouette carries an SC or SL model code, and measuring across the top settles it.
NorthWind owners. NorthWind is a Coast sub-brand, and its 7-foot and 8-foot tubs used NorthWind’s own shells. The 7B / 7C and 7L are printed 83" square and take the Small; the 8B / 8C and 8L are printed 90" square and take the Large. NorthWind’s 2014 catalog called them the NWC 728 and NWC 744 (7B / 7C), the NWL 728 and NWL 744 (7L), the NWC 844 (8B / 8C) and the NWL 844 (8L), and the 2016 collection called them the NW7C, NW7L, NW8C and NW8L. A C or B has no lounger; an L has one. NorthWind’s other square tubs used Coast shells: the NWZ is the Zenith shell and the NWV the Vantage shell, both printed 81.5" square (X-Small), and the NWH (Helios shell), NWU (Unity shell) and NWF (Freedom shell) are printed 92" square (X-Large). Where a model came in 44, XL and SL versions, they share one footprint and differ in cabinet height, 36" or 40". In 2017 NorthWind sold the Zenith, Freedom, Apex and Element under those names: the NorthWind Zenith and Freedom take the same sizes as the NWZ and NWF, the NorthWind Apex is the 92" Apex lounge shell (X-Large) and the NorthWind Element is the 83.5" Element shell (Small). In the mid-2000s NorthWind also sold the Islander, Paradise, Manhattan, Tahiti and Wailea under the same names as Coast. The NorthWind NWO (Omega), NWK and NWA (Alpha) are rectangles, and no AIRCAP 1™ fits them.
Retired Coast models. The Zenith and Vantage are printed 81.5" square and take the X-Small, and so does the Paradise, printed 81" x 81.5". The Helios and Unity are printed 92" square and take the X-Large. The Pacific (91" square), Lanai (90" x 90.5") and Manhattan (91" square) take the Large. The Bahama is printed 91" x 91.5"; the longer side rounds up to 92", so it takes the X-Large. The Pacific Media, Unity Media, Lanai Soundwaves and Bahama Soundwaves, and the MicroSilk versions of the Zenith and Vantage, share those footprints. The Islander, from Coast’s Patio Series, is printed 76.5" square, half an inch under 77"; it rounds up to the XX-Small, but measure it before ordering.
Wood top rails. Coast sold a cedar top rail on some older tubs, and it widens the top. Coast’s mid-2000s sell sheets print the Helios at 92" with the lip-over cabinet but 94" with the top rail, still the X-Large, and the Bahama and Manhattan at 96" with the top rail, too big for any AIRCAP 1™. The Lanai and Pacific already sit at the top of the Large range, so a rail takes them out of it, and we have no top-rail size for either. If your tub has a wood top rail, measure across the rail before ordering; if it reads more than 94", no AIRCAP 1™ fits.
Element owners: the 2017 figure is a misprint. Coast’s 2017 brochures and its 2017 Element web page printed the Element at 81.5" square, the Zenith’s figure. That was an error: the Element, including the NorthWind Element, is 83.5" square and takes the Small. If you are not sure, measure across the top.
Older models not in our fitter yet. NorthWind’s 2007 series sheet prints the Tahiti at 82.25" square and the Wailea at 91.5" square, but we have not found a clear top-view photo of either, so they are not in our fitter yet — measure 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.
Models the AIRCAP 1™ does not fit: every Curve model — Apex Curve, Element Curve, Freedom Elite Curve and Freedom Opulence Curve — has a square footprint but a raised curved back wall, and a flat square cover cannot seat against it. The retired Zenith Curve, Vantage Curve and Radiance Curve have the same raised back, and the Journey Curve is 84 x 92". The Omega L and Omega B, and the Oasis XP and JetMax models built on the same shell, are rectangular at 66 x 83.5", as are the Purfikt, 2Purfikt, DuoScape and Indulgence families and the Silhouette Rec Lounge. The Mirage is rectangular at 132 x 92", the Cascade II runs 92 x 101" — past the 94" ceiling — and the Coast Spas 13B through 21VE and the Commercial Swim Spa are swim spas. Among retired models, the Kauai (72.5 x 81"), Alpha (75 x 90.5"), Qwest (82.1 x 77.3"), Edge (78 x 90"), Horizon (83.25 x 92") and Aruba (59.5 x 83.5") are rectangles; the Seabreeze and the NorthWind Geneva are round, 75.75" across; the Tub-licious and Silk Spa are ovals; the Diamond is a corner spa; and the Phantom, printed 94 x 94", has one large curved infinity-edge corner. The Cascade I (94.5 x 96.5") and Extreme (95 x 95") are past the 94" ceiling, and the Wellness I is printed 96" square in one Coast catalog and 94" in another and has exercise bars fitted, so we do not list it. The AIRCAP 1™ is built for square cabinets from 77 to 94 inches.
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″, Coast Spas or not.
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