Meet the AIRCAP 1™ — 8X more durable than foam, never gets heavy, and installs in about 15 minutes. Now available at Leisure Pools and Spas Store.
Aircap1™ · AirLoc™ & ZipTech™ technology · *Patent pending
THE AIRCAP 1™
The AIRCAP 1™ uses AirLoc™ drop stitch technology — the same construction that makes inflatable paddle boards rigid and tough — to create a lighter, stronger, longer-lasting cover with superior protection over foam. Four sizes fit over 90% of hot tubs on the market, so there are no long lead times and no replacing waterlogged foam every 3–5 years.
WHY IT WINS
Patent-pending waterproof zippers with three included custom-length skirts. If a skirt ever wears out (or the dog chews it), just zip on a new one.
Thousands of internal drop-stitch threads trap still air, forming a thermal barrier that holds its R-value for the life of the cover — cutting energy use by up to 30%*.
Welded drop stitch fabric resists punctures, tears, and UV damage, and keeps its shape and rigidity under pressure — season after season.
SIDE BY SIDE
The AIRCAP 1™
Traditional Foam
Water Absorption
Type youWaterproof polyurethane-coated fabric never absorbs water — no mold, no mildew, no added weight.
Foam soaks up water within the first year, growing heavy and becoming a breeding ground for mold.
Insulation
Holds its insulating R-value for the life of the cover.
Insulating power is cut in half once wet — and keeps dropping with age.
Weight
Lightweight out of the box, and it stays that way for its whole lifespan.
Gets heavier every season until it's nearly impossible to remove safely.
Lifespan
Built to last 7–10+ years, backed by a 3-year warranty.
Typically needs replacing every 3–5 years.
ENERGY SAVINGS
Less heat escapes, so your spa holds its temperature with less work — the AIRCAP 1™ can cut your hot tub's energy consumption by up to 30%* compared to aging foam covers.
Cover Type
Annual Energy
Replace Every
5-Yr Cost
Traditional Foam
$400–$600
3–5 years
$2,000+
The AIRCAP 1™
$280–$420
7–10+ years
~$1,400
*Estimates based on average U.S. energy rates and typical hot tub usage. Actual savings may vary.
15-MINUTE INSTALL
Install in 15 minutes or less: inflate the two halves with the included dual-action pump, then zip on one of three included custom-length skirts using the patent-pending ZipTech™ system. And if your dog treats the skirt like a chew toy? It's replaceable — no new cover needed.
SureFit™ sizing
All you need is the length and width of your spa (or your existing cover). Four semi-custom sizes fit over 90% of hot tubs on the market — and THRML's Spa Fitter™ matches your spa's make and model to the right AIRCAP 1™ in seconds. Stop by Leisure Pools and Spas Store, and we'll size it for you.
Backed for 3 years against manufacturing defects.
Free return or exchange within 30 days. Easy as that.
Meets the ASTM F1346-23 safety cover standard.
Visit Leisure Pools and Spas Store to see the AIRCAP 1™ in person, or get in touch, and we'll find your fit.
