The Last Spa Cover You'll Ever Buy
Introducing the THRML AIRCAP 1™ — a revolutionary foam-free spa cover with AirLoc™ air-cell insulation. No waterlogging. No sagging. No replacing every 3–5 years.
$1,199.00 MSRP
$999.00
Save $200.00 + Free Shipping
Fall special pricing — while supplies last
Why the AIRCAP 1™ Changes Everything
Traditional foam spa covers absorb water over time. What starts as a 40 lb cover can balloon to 100 lb or more — waterlogged, saggy, and moldy. Most foam covers need replacing every 3 to 5 years.
The AIRCAP 1™ by THRML uses welded drop-stitch air construction — the same engineering as a premium inflatable paddleboard. There's no foam to absorb water, so it stays at 35–40 lb for the life of the cover.
Carefree Spas is proud to carry the AIRCAP 1™ as an authorized Colorado retailer. Come see it in our Littleton showroom or order yours today with free shipping.
Features & Benefits
Stays Lightweight for Life
35–40 lb and it never gains weight. AirLoc™ air-cell core cannot absorb water — no waterlogging, ever.
Superior Insulation
Air is one of nature's best insulators. The AIRCAP 1™ traps heat more effectively than aging, waterlogged foam.
One-Person Handling
Light enough for one person to remove and replace — no cover lifter required. Easy on your back, easy on your schedule.
Never Gets Musty
No foam means no moisture absorption, no mold, no mildew smell. Just a clean, fresh cover every time.
Ziptech™ Modular Skirt
Three skirt depths included so you get a custom fit on virtually any spa cabinet — no measuring corner radius required.
Safety Certified
Engineered to comply with ASTM F1346-23 as a manual safety cover. Includes four keyed locking tie-down straps.
3-Year Warranty
Full 3-year limited warranty against defects in materials and workmanship under normal use.
Ships in 1–2 Business Days
Free shipping to all 50 U.S. states. Typically arrives 3–5 business days after shipment.
AIRCAP 1™ vs. Traditional Foam Covers
See why the AIRCAP 1™ outperforms traditional foam covers in every category.
| Feature | AIRCAP 1™ (THRML) | Traditional Foam Cover |
|---|---|---|
| Initial Weight | 35–40 lb | 35–55 lb (dry) |
| Weight Over Time | Stays 35–40 lb for life | Can exceed 100 lb when waterlogged |
| Water Absorption | None — air core cannot absorb water | Absorbs water over time |
| Insulation Performance | Consistent — air is a natural insulator | Degrades as foam waterloggs and sags |
| Mold & Mildew | Not possible — no moisture absorption | Common as foam absorbs water |
| Replacement Cycle | Designed to last — no foam to fail | Every 3–5 years on average |
| One-Person Handling | Yes — lightweight for life | Only when new; gets heavier over time |
| Corner Radius Measurement | Not required | Required for custom orders |
| Warranty | 3 years | Typically 1–2 years |
| Shipping | Free to all 50 states | Varies by retailer |
Find Your Size
Measure both sides of your spa across the top of the cabinet. Size from the longer measurement.
XX-Small
77"–79" spas
X-Small
80"–82" spas
Small
83"–85" spas
Medium
86"–88" spas
Large
89"–91" spas
X-Large
92"–94" spas
💡 If your measurement falls between two sizes, round up. No corner radius measurement needed.
What's in the Box
- AIRCAP 1™ cover (Deep Grey™)
- Inflation pump
- Three Ziptech™ modular skirt sizes
- Four keyed locking tie-down straps
What Customers Are Saying
"What this company has created in terms of an original and revolutionary product is nothing short of amazing. Do not wait to buy one."
— William Taylor
"Awesome product, my kids don't complain about the cover anymore. It fits and looks great — setup was super easy and took about 15 minutes total."
— Neil Allen
"For a reasonable price, I can cover my spa with a top that won't get musty. It stays light and easy to move instead of getting waterlogged and heavy. Installation was a breeze and we love it already!"
— Anonymous Buyer
One of THRML's Top-Ranked Spa Cover Dealers Nationally
Carefree Spas is proud to be recognized by THRML as one of the top AIRCAP dealers in the USA — carrying covers built to survive Colorado's intense UV, hail, and freeze-thaw cycles. No cheap naugahide or weather guard covers. No waterlogged foam. Just the best spa cover available.
THRML AIRCAP 1™
USA-Made. Built for Colorado.
- Manufactured in the USA — not imported from China
- Air-cell insulation never waterloggs or breaks down
- Survives Colorado UV, hail, and freeze-thaw cycles
- One person can handle it — no heavy lifting
- No mold, no mildew, no cracking foam
- ASTM certified safety standard
- 3-year warranty backed by THRML
- In stock at our Littleton showroom — take it home today
Typical Imported Cover
Cheap Foam. Ships from China.
- Manufactured overseas — months-long shipping wait
- Foam core absorbs water, doubles in weight within 2 years
- Colorado UV degrades vinyl and foam rapidly
- Two people required to lift a waterlogged cover
- Mold and mildew grow inside saturated foam
- No meaningful safety certification
- Warranty claims require overseas shipping
- Not available locally — no same-day pickup
THRML Dealer Bulletin
Carefree Spas — Ranked Among THRML's Top AIRCAP Sellers in the USA
THRML recognizes Carefree Spas as one of the top dealers of the AIRCAP 1™ in the country. We stock covers locally — no waiting weeks for a cheap import that won't hold up to a Colorado winter.
Ready to Upgrade Your Spa Cover?
Stop replacing waterlogged foam covers every few years. The AIRCAP 1™ is in stock at Carefree Spas — visit our Littleton showroom or call us today.
3736 Norwood Drive Unit 1, Littleton, CO 80125