Spa Fitter
Hot Spring Spas Vanguard Replacement Cover
The Hot Spring Spas Vanguard takes the AIRCAP 1™ Medium — a foam-free replacement hot tub cover for square spas 86"–88". The Vanguard's cabinet measures 87" x 87", inside the Medium'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 | 87" x 87" |
|---|---|
| AIRCAP 1™ size | Medium fits 86"–88" |
| 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 Medium fits the Vanguard
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 Medium, which fits cabinets 86"–88", covers the Vanguard's 87" x 87" shell with the right overhang. Instead of a rigid foam core wrapped in vinyl, the AIRCAP 1™ uses welded drop-stitch construction (the material of premium inflatable paddleboards): a sealed air chamber that cannot absorb water, so it never becomes the waterlogged, two-person lift that ends most foam covers.
Cabinet dimensions can change between model years. Before ordering, measure your Vanguard side to side across the top of the cabinet in both directions — the SureFit™ guide walks through it in two measurements. If your spa measures between two sizes, round up.
Other Hot Spring Spas models we fit
Not a Vanguard?
The Spa Fitter matches 363 models across 25 brands to the right AIRCAP 1™ — or measure any square spa with SureFit™.