Spa Covers
Don't waste good money on a cheap spa cover.
Get the most trusted & reliable spa covers brand.
Heavy-Duty Locking Tie-Down Wind-Straps
For security, heat retention & cover protection
Four (4) color-matched, reinforced tie down heavy-duty locking windstraps with latches, key and stainless mounting screws are provided for spa cover security & heat retention. No extra charge for heavy-duty windstraps!
Warning: Inferior brands have only 2 tie downs, a safety hazard which subjects the cover to wind damage and promotes heat loss.
Reinforced Color-Matched Handles
Attractive recessed design
No need to settle for ugly, black web-mesh handles! Thermo Shield's attractive recessed design features two reinforced handles with matching vinyl covering for both beauty and durability.
NOTE: Add an optional second set of handles for added utility. (Spa cover handles are used for opening and closing of a cover only.)
SunStar Fabric Option
Premium outdoor fabric
Thermo Shield is delighted to feature durable, fade-resistant SunStar outdoor fabrics as an option for spa covers. Covers made with SunStar performance fabric weigh about 10 pounds less than vinyl covers, for ease of use.
Reinforced Center Hinge
With heat lock pads
Thermo Shield covers feature a super-reinforced multi-layer cover hinge and specially engineered pads to block heat escape, plus multiple moisture drains in the underside.
NOTE: Add optional full-length thermal seal for even better heat retention.
Aquatic-Grade Virgin EPS Core Insulation
Stronger and thicker taper - supreme moisture resistance
Our standard covers feature 4" > 2.5" taper closed-cell aquatic grade virgin EPS insulating cores with better R-value and moisture resistance. Some cover makers use cheap construction-grade foam or taper down to a flimsy 2" thin-- not a good idea. Our Ultra and eMax model covers feature even thicker 5">3" taper foam cores with the highest strength and insulation density.
Energy Reflex - Option
Energy Saving Heat Reflective Shield
Energy Reflex is a special metalized reflective shield. Installed inside, between the spa cover's foam core and the vapor barrier wrap, it acts like a heat-reflective mirror. Radiant heat, which would otherwise escape and be wasted, is reflected back down into the spa water. This reduces the load on your hot tub heater, and your wallet.
This inexpensive upgrade is a breakthrough which could pay for itself in reduced energy consumption all year.
Heavy-Duty Locking Tie-Down Wind-Straps
Reinforced Color-Matched Handles
Aquatic-Grade Virgin EPS Core Insulation
Replace Your Hot Tub Cover in 4 Easy Steps!
See what sets Thermo-Shield apart in replacement hot tub covers.
ASTM Certified Spa Covers
Meets or exceeds safety standards
You can rest assured that your new Thermo Shield replacement spa cover meets and exceeds product safety requirements. Our spa covers have undergone rigorous testing in independent laboratories, certifying that our products have met the critical standards for safety.
Best Customer Service
Questions? Need help with your order? Our spa cover experts are at your service.
(800) CAL-SPAS
Monday - Friday, 8 am - 5 pm Pacific Time
Free Delivery to Your Door
After your cover is completed, it leaves the factory for FREE delivery to your door.
* US 48-state shipping only
Factory Warranty
Thermo-Shield spa covers are factory warranted for 1 year.
Color Choices:
Get Started - 4 Easy Steps: First Select Your Insulation Thickness
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$450 - Basic
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Thermo-Shield Spa Cover - Basic
$450 - FREE Shipping (USA-48)
The medium density of our Basic model provides extra resistance to moisture absorption
in rainy areas, plus a good load rating for seasonal climates. The higher R-value
means this cover will reduce energy consumption anywhere. Better than most of the
covers that come with new spas. Features Full length heat seal, Core Moisture Barrier,
lock and key safety >system.
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1.5 lb. Aquatic Grade Core: 4">2.5" taper
Full length Heat Seal
Dual 18ga Carbon Steel C-Channel Reinforcement
Antaeus 2000™ Polymer Vapor Seal-6 Mil Core Moisture
Heavy-duty Windstraps included
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$472 - Standard
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Thermo-Shield Spa Cover - Standard
$472 - FREE Shipping (USA-48)
The medium density of our Standard model provides extra resistance to moisture absorption
in rainy areas, plus a good load rating for seasonal climates. The higher R-value
means this cover will reduce energy consumption anywhere. Better than most of the
covers that come with new spas. Features Full length heat seal, Core Moisture Barrier,
lock and key safety system.
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1.5 lb. Aquatic Grade Core: 5">3" taper
Full length Heat Seal
Dual 18ga Carbon Steel C-Channel Reinforcement
Antaeus 2000™ Polymer Vapor Seal-6 Mil Core Moisture
Heavy-duty Windstraps included
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$516 - Deluxe
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Thermo-Shield Spa Cover - Deluxe
$516 - FREE Shipping (USA-48)
With our highest energy efficiency, maximum strength, load rating, and moisture
resistance, plus exceptional longevity, our Deluxe is the finest replacement spa
cover you can buy. It's designed to stand up to extreme weather conditions, warm
or cold, rainy, snowy, or dry. Its increased strength is a big plus if you get snow
. You'll save a bundle on spa heating costs in any climate. If you want a first-rate
hot tub cover at a great price, the Deluxe is your best choice.
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2.0 lb. Aquatic Grade Core: 5">3" taper
Full length Heat Seal
Dual 18ga Carbon Steel C-Channel Reinforcement
Antaeus 2000™ Polymer Vapor Seal-6 Mil Core Moisture
Heavy-duty Windstraps included
Lock and Key Safety System
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Why Thermo-Shield?
There are cheaper spa covers on the market, but we won't sell them. Why?
Because we'd lose a good customer (you) after they failed in a year or two! Thermo Shield custom
spa covers last years longer than ordinary spa tops. Our design is the culmination of over many
years of cover crafting experience, with more satisfied online customers across America than any other.
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The most durable replacement hard cover for hot tubs, Thermo Shield covers are designed to stand up to the effects of sun, rain,
or snow. You'll save more energy to achieve a lower total cost of ownership over time, than any other spa cover made.
Our spa covers come with a bumper-to-bumper factory warranty for your peace of mind and are now ASTM Certified to meet
critical safety standards.
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The Cal Spas' step-by-step ordering process means you can easily order the perfect
replacement spa cover online, for any spa brand, in just minutes.
See why Thermo-Shield is your best buy in spa covers:
Why your Spa Cover is Vitally Important:
After proper sanitization and water balance, your spa cover itself is the single most critical piece of equipment to keep
your hot tub water clean, and to keep your energy bill at a reasonable level. Saving money on heating costs means properly
insulating your tub, and that is what good insulating spa covers achieve. Heat rises, and just like in your home, most heat
loss in a hot tub goes directly up. By sitting just above the steaming water, a well-made hot tub cover provides proper insulation
to help trap the heat inside. A problem that arises from all the warm water vapor is that the foam core of a spa cover can eventually
become saturated, as water molecules work their way into the millions of tiny hollow spaces inside the foam. When insulating foam
becomes wet, it loses almost all of its R-value. While there is no such thing as a totally waterproof hot tub cover,
Thermo Shield research has developed what we believe is one of the most water-resistant cores in the spa cover industry.
Our ZEROtex™ core liner is a special 6 mil thick chemical and water vapor resistant polymer barrier, with heat-welded seams.
This material encapsulates the foam cores of our covers. Together with our aquatic-grade foam cores, it is one of the things
that makes a long-life Thermo Shield spa cover your best choice in insulating spa covers. Our advanced and exclusive Energy Reflex
option acts like a heat mirror, saving even more energy. Our marine-grade Enduratex Vinyl and SunStar Outdoor Fabric outer covers
are both beautiful and ultra durable.
Whatever brand of spa you own, Cal Spas has you covered!
We're America's hot tub cover experts. Since 1979, we've provided top quality replacements for Jacuzzi® covers, Dimension One® spa covers, Sundance® spas, Coleman® hot tub covers, Hot Spring® spa covers, Belize™ hot tubs, Master® spas covers, LifeCast® spas, Dream Maker® spas covers, Marquis®, Vita® spa tops, LA Spas®, Cal Spas® covers and countless other spa manufacturers. We know hot tub spa covers better than anyone.
Spa covers are custom-made to your specifications
and are protected by the manufacturer's warranty, but are not returnable.
Sorry, spa covers cannot be shipped outside the contiguous-48 USA.
Replace your hot tub cover in 4 easy steps!