Spa Fitter
Riptide Spas Family 370 Replacement Cover
The Riptide Spas Family 370 takes the AIRCAP 1™ XX-Small — a foam-free replacement hot tub cover for square spas 77"–79". The Family 370's cabinet measures 79" x 79", inside the XX-Small's range. The cover weighs 35–40 lb for life, costs $1,195, is engineered to comply with ASTM F1346-23, and carries a 3-year limited warranty.
| Spa cabinet | 79" x 79" |
|---|---|
| AIRCAP 1™ size | XX-Small fits 77"–79" |
| Cover weight | 35–40 lb — constant for life |
| Price | $1,195, free US shipping |
| Skirt | Ziptech™ modular, three lengths included |
| Safety | Engineered to comply with ASTM F1346-23 |
| Warranty | 3-year limited warranty |
Why the XX-Small fits the Family 370
The AIRCAP 1™ comes in six sizes covering square spas from 77" to 94". Each size is built to overhang its band slightly — that is how a spa cover is meant to sit — so the XX-Small, which fits cabinets 77"–79", covers the Family 370's 79" x 79" shell with the right overhang.
At 79" the Family 370 is at the top of the XX-Small's 77"–79" range — the largest cabinet this size covers. Measure before ordering: half an inch more and the cover you need is the X-Small. Within Riptide Spas, the Family 370 shares that 79" x 79" cabinet with FUN FOR 6, Family 360 and Infinity 330 — same footprint, same cover. Riptide Spas builds the 12 models we fit on 3 footprints, and the Family 370 is on the smallest of them; the line spans 3 of the six AIRCAP 1 sizes.
Cabinet dimensions can change between model years. Before ordering, measure your Family 370 at its widest point across the top, in both directions, including any acrylic lip that overhangs the cabinet — the SureFit™ guide walks through it in two measurements. If a figure you have found elsewhere is larger than ours, an overhanging lip is the usual reason. If your spa measures between two sizes, round up.
Every spa in our catalogue that measures 79" x 79" is on one page: hot tubs that take a 79" × 79" cover — the same AIRCAP 1™ XX-Small, at the same price.
How the AIRCAP 1™ is built
Instead of a rigid foam core wrapped in vinyl, the AIRCAP 1™ uses welded drop-stitch construction: a sealed air chamber with no foam to absorb water, so it does not become the waterlogged two-person lift that ends most foam covers. More on how it insulates, how it holds up, and why it is foam-free — or estimate what your current foam cover weighs.
Every Riptide Spas model we fit
| Model | Cabinet | AIRCAP 1™ |
|---|---|---|
| FUN FOR 6 | 79" x 79" | XX-Small same cover as the Family 370 |
| Family 360 | 79" x 79" | XX-Small same cover as the Family 370 |
| Family 370 (this page) | 79" x 79" | XX-Small |
| Infinity 330 | 79" x 79" | XX-Small same cover as the Family 370 |
| FUN FOR 5 | 84" x 84" | Small |
| Family 530 | 84" x 84" | Small |
| Family 570 | 84" x 84" | Small |
| Infinity 530 | 84" x 84" | Small |
| Infinity 560 | 84" x 84" | Small |
| Family 760 | 91" x 91" | Large |
| Infinity 730 | 91" x 91" | Large |
| Infinity 770 | 91" x 91" | Large |
Riptide Spas Family 370 cover: common questions
What size hot tub cover fits the Riptide Spas Family 370?
The Riptide Spas Family 370 takes the AIRCAP 1 XX-Small, which fits square hot tubs measuring 77"–79" across. The Family 370's cabinet measures 79" x 79", inside that band. Measure your spa side to side across the top of the cabinet to confirm before ordering.
Will the AIRCAP 1 fit a Riptide Spas Family 370?
Yes — the Family 370's 79" x 79" square cabinet falls in the AIRCAP 1 XX-Small's 77"–79" range, and the Ziptech modular skirt system ships with three skirt lengths so the drop over the cabinet adjusts without a custom order. Cabinet sizes can change between model years, so confirm with two quick measurements.
How much does a replacement cover for the Riptide Spas Family 370 cost?
The AIRCAP 1 costs $1,195 in every size, including the pump, three Ziptech skirt lengths, and tie-down straps, with free US shipping and 30-day returns. Unlike a foam cover it has no foam core to waterlog, so it stays at its original 35–40 lb weight for life.
How heavy is a replacement cover for the Riptide Spas Family 370?
The AIRCAP 1 XX-Small weighs 35–40 lb and keeps that weight permanently — its sealed drop-stitch air core cannot absorb water. A foam cover starts at 40–75 lb and gains weight as the foam saturates.
Not a Family 370?
The Spa Fitter matches the current models of every major brand to the right AIRCAP 1™ — or measure any square spa with SureFit™.