79 x 79 Hot Tub Cover — Size, Fit and 11 Spas That Take It

A hot tub measuring 79" × 79" takes the AIRCAP 1™ XX-Small, which fits square spas 77–79". That is the whole answer — but measure your own spa before ordering rather than trusting the size of the cover you are replacing, because cabinets vary between model years and a cover bought to the wrong number is the most common ordering mistake there is.

Measure straight across the top of the cabinet, edge to edge, both ways. If the two numbers differ, use the larger one. If you land between two sizes, round up: an oversized cover overhangs by a fraction, which is how a spa cover is meant to sit, while an undersized one will not seal along the edges.

Which hot tubs are 79" × 79"?

10 of the 496 models in our Spa Fitter measure 79" × 79", across 3 brands, and 1 more rounds up to it (listed below). If yours is on this list, the size question is settled — click through for its own page.

Brand	Models measuring 79" × 79"
AquaLife Spas	Surfaces
Superior Wellness	Platinum Florence, Platinum Happy, Platinum Palma, Platinum Refresh, Platinum Reims, Platinum Seville, Platinum St Tropez, Platinum Vacation Lounge
Wellis Spas	Prague

Also rounds up to 79" × 79"

1 more model is not printed as an exact 79" square: one or both sides fall a fraction short. The rule is to round up, so it takes the same XX-Small.

Brand	Rounds up to 79" × 79"
Superior Wellness	Platinum Vacation Social (78.7" x 78.7", 0.3" short)

That makes 79" the joint 13th most common of the 18 square footprints in the Spa Fitter (11 of 496, 2.2%, level with 86" × 86" and 87" × 87"); the most common is 84" × 84" with 131. Next door, 78" × 78" lists 30 and 80" × 80" lists 25 (plus 2 that round up). Superior Wellness builds more at this size than anyone else — 9 of the 11; its other 23 square models sit at 83" × 83", 84" × 84", 87" × 87", 88" × 88", 91" × 91".

What if my spa is not exactly 79"?

79" (200.7 cm) is the largest square the XX-Small is rated for. Half an inch more rounds up to 80" and takes the X-Small instead, so measure carefully at this size.

The XX-Small covers everything from 77–79" across, so you do not need to hit 79" exactly. Outside that band, the AIRCAP 1™ comes in six sizes spanning 77" to 94" — the two-measurement guide will place you, or you can look your model up directly in the Spa Fitter.

One limit worth stating plainly: these are covers for square spas. If your cabinet is round, octagonal or a rectangle, no size here will fit it, and the alternatives guide covers what will.

Nearby measurements: 77" × 77" · 78" × 78" · 80" × 80". Every size from 77" to 94" has its own page, listed on the Spa Fitter.

What a 79" × 79" cover costs

The AIRCAP 1™ XX-Small is $1,195 — the same price as every other size, including the pump, three Ziptech™ skirt depths and tie-down straps, with free shipping to all 50 states. There is no size surcharge, which is unusual in this category: most makers price a cover by its square footage, so a bigger spa costs more. For how that compares with foam and the other constructions, see what a hot tub cover costs.

It weighs 35–40 lb and, with no foam core to absorb water, never gains weight — the one number a foam cover cannot promise.

Frequently asked questions

What size cover fits a 79" x 79" hot tub?

A 79 inch square hot tub takes the AIRCAP 1 XX-Small, which fits square spas 77 to 79 inches across. Measure straight across the top of your cabinet both ways and use the larger number; if it falls between two sizes, round up.

Which hot tubs are 79" x 79"?

10 models in our Spa Fitter measure 79 by 79 inches across 3 brands (AquaLife Spas, Superior Wellness and Wellis Spas), and one more rounds up to it. Each one has its own page listing the cover size it takes.

Is 79 inches the largest spa an XX-Small fits?

Yes. The XX-Small is rated for square spas 77 to 79 inches across, so 79 is its upper limit. A cabinet that measures even half an inch over rounds up to 80 and takes the X-Small.

How much does a 79" x 79" hot tub cover cost?

The AIRCAP 1 is $1,195 in every size, including the pump, three Ziptech skirt depths and tie-down straps, with free shipping to all 50 states. There is no size surcharge, so a 79 inch cover costs the same as the largest one we make.