Sunbelt Hot Tubs Replacement Hot Tub Covers

Sunbelt has been building hot tubs in Texas since 1979 and sells them through a dealer network under six ranges — Storm, Leisure, Lone Star, SB, the Tubly plug-and-play line and a rental range. Nineteen of its models are square cabinets an AIRCAP 1™ fits, and unusually they cover every one of our six sizes, from the 77" Tubly up to the 94" Andromeda.

Here is how the 19 Sunbelt models in our fitter map to AIRCAP 1™ sizes:

• The Tubly Smart (PNP Ontario), Tubly Six and Ontario 6 measure 77" x 77" and the LS 500 measures 78" x 78" — all four take the AIRCAP 1™ XX-Small, which fits square spas 77–79".
• The Twister, Aurora, Twister Leisure and Aurora Leisure all measure 81" x 81" and take the AIRCAP 1™ X-Small, which fits square spas 80–82".
• The SB 721 (Sunwave SW71) measures 83" x 83" and takes the AIRCAP 1™ Small, which fits square spas 83–85".
• The SB 820 (Sunwave SW70) and the LS 710, which Sunbelt’s 2020 Lone Star page printed at 87" x 87", both take the AIRCAP 1™ Medium, which fits square spas 86–88".
• The Typhoon, Monsoon, Typhoon Leisure and Monsoon Leisure all measure 91" x 91", and the LS 800 measures 89" x 89" — all five take the AIRCAP 1™ Large, which fits square spas 89–91".
• The SB 821 (Sunwave SW81) and SB 822 measure 93" x 93" and the Andromeda measures 94" x 94" — all three take the AIRCAP 1™ X-Large, which fits square spas 92–94".

Leisure is the same cabinet as Storm. Sunbelt sells four of its Storm shells a second time as the Leisure range, at a lower equipment level — its own factory build sheets give the Twister and Twister Leisure the identical 81" x 81" x 38" and the identical 347-gallon capacity, and the Typhoon and Typhoon Leisure the identical 91" x 91" x 39" and 449 gallons. What changes is the jet count and the pump pack, not the shell. So whichever version you own, the cover is the same size.

Other names, same covers. Sunbelt’s 2023 Plug N Play brochure listed the Tubly Smart’s shell as the PNP Ontario, at 77" x 77", and Sunbelt’s parts store sells one “Tubly / Ontario” cover for it. Sunwave Hot Tubs come from Sunbelt too: the Sunwave owner’s manual is published on Sunbelt’s own documents site under Sunbelt’s Houston address, and Sunbelt’s parts store sells each Sunwave cover as one part with a Sunbelt model. The SW81 shares its cover with the SB 821 and SB 822, the SW70 with the SB 820 and the SW71 with the SB 721, so each takes the same AIRCAP 1™ size as its Sunbelt partner above. The SW7 shares the cover Sunbelt sells for the Twister and Aurora, so it takes the AIRCAP 1™ X-Small. The SW50, SW55 and SW60 share covers with the LS 400, LS 550 and SB 610, none of which is square.

LS 900 and LS 950 owners: we cannot help, and here is why. Both are perfect squares at 95" x 95" — one inch past the 94" top of our X-Large. It is the closest miss in our whole fitter, and we would rather say so than sell you a cover an inch short on every side. Sunbelt’s own parts catalogue sells one cover for the pair, which is the right place to go.

A warning about the LS Corona. Sunbelt’s factory build sheet lists it as 93" x 93", which looks like an X-Large. It is not: the Corona is an octagon, and 93" is the width across the flats rather than the side of a square. Sunbelt’s own cover catalogue files it under “Corona / Octagon8”. The same goes for the LS Tranquility, which its cover catalogue files as “Tranquility / Round84”, the LS Nova at 69.5" round, the Apollo, which the cover catalogue files as “Apollo / Octagon7”, and the round LS 550 (also listed as the LS 600). A square cover will not fit any of them. Nor will it fit the older Trinity: its sides are equal, but one corner is cut off at 45 degrees.

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. That earns its keep on this range, whose cabinet heights run from 30" on a Tubly to 39" on a Monsoon.

The other Sunbelt models the AIRCAP 1™ does not fit are all rectangles: the Tornado and Hurricane and their Leisure versions, the LS 400 (78" x 66"), the LS 410 (84" x 60"), the LS 700 (89" x 78"), the SB 610, the Tubly Fit and Tubly Family, and the Quartet, along with the older LS 300 (60" x 78"), Cyclone, Key West (75" x 83"), Imperial, Infinity 156 and Jupiter, which also has one corner clipped. The five Swim Series models are swim spas, 12 to 16 feet long, and the In-Ground Series, including the 95" Lounge Spillover, is set into decking and has no cabinet for a cover to sit on. The AIRCAP 1™ is built for square cabinets from 77 to 94 inches.

Older Sunbelt Spas models: measure first. Sunbelt sold its earlier square tubs under the Sunbelt Spas name, among them the Daytona, Coral Reef, Serenity, Nebula, Saturn, Biscayne Bay, Eclipse, Ultra (and Ultra Wave), Polaris, Shadow, Shasta and Spectra. We have not listed them, because the cover size depends on the cabinet each was built with: Sunbelt’s 2013 in-ground brochure prints the bare shells at 81" to 94", while its 2006 brochure printed several of the same tubs as cabinet spas at up to about 4" more. The same goes for an older Typhoon, Monsoon or Andromeda (including the Andromeda Wave), which the 2006 brochure printed at 7′11" (95"), an older Aurora or Aurora Wave, printed at 7′0" (84"), and an older Ontario, printed at 6′7" (79"). If you own one of these, measure across the top of the cabinet and choose the size from that measurement: a square top from 77" to 94" takes the size whose range it falls in, and 95" or more is past our largest size.

Dimensions are as printed by Sunbelt, taken from its own factory build sheet where one exists rather than from the website, because the two differ on a few models — the build sheet gives the SB 820 as 87" where the website says 86", for instance, though both land in Medium. Cabinet sizes can change between model years, so measure your spa side to side across the top of the cabinet before ordering; the SureFit™ measuring guide walks through it in two measurements. If your measurement falls between two sizes, round up.