Thermal Guardian Spa Covers

Don't have a Sundance Optima? Need a different size? No Problem!
Simply select your BRAND or your SHAPE below to get started.

To shop for your new spa cover, please either Select Your Brand -OR- Select Your Shape.

Search for your spa brand

Select your Brand   or

Select your spa shape

Select your Shape

Select your spa brand & model to look up the suggested size we have on file.

Select Spa Brand:

then Select Spa Model:

We make covers for just about

If you cannot find your size in the database, simply choose the shape of your spa to the right and enter a few dimensions. It's that simple to order your new custom-made cover.

Even if you select a specific model out of our database, you are still solely responsible for the size of the cover. Covers may not be returned for size errors that may be in the database.

Select your spa cover shape.
You will provide your measurements next.


Spa Cover with Square Corners
Square Corners
Spa Cover with Rounded Corners
Rounded Corners
Circle or Round Hot Tub Cover
Hot Tub Cover with 4 Equal Cut Corners
Four Equal Cut Corners
Spa Cover Shape 1 Cut Corner A
One Cut Corner A
Hot Tub Cover Shape 1 Cut Corner B
One Cut Corner B
Spa Cover - 2 Cut Corners A
Two Cut Corners A
Hot Tub Cover - 2 Cut Corners B
Two Cut Corners B
Spa Cover as 8 Sided Polygon Octagon
Eight Sided Polygon
Spa Cover with 3 Cut Corners
Three Cut Corners
Cover for Hot Tub with Raised Speakers
Raised Speakers
(2 or 4 Corners)
Elliptical Hot Tub
(i.e. Hot Spring Classic)
Hot tub covers and spa covers started at $249.95 with free delivery
Return your spa cover for any reason within 30 days of delivery. Restrictions apply.
Have You Measured?
It's important. Check out our
Spa Cover Measurement Tips
for more easy to follow directions.
Many of our covers are covered by a 5 Year Limited Warranty.
Our Best Thermal Guardian spa cover models are covered by our 5 Year Warranty.
Basic model has 1 Year Warranty.
Standard model has 2 Year Warranty.
Ultra model has 3 Year Warranty.
Our covers are built in accordance with safety standard ASTM 1346-91
Our spa covers feature the required labeling and, when manufactured with four or more tie-down straps, are built in accordance with safety specification ASTM 1346-91.
Return your spa cover for any reason within 30 days of delivery. Restrictions apply.
We feel so confident you will like your new spa cover, that we will allow you to return it within the first 30 days if you don't.
Normal return policies apply.

Thermal Guardian premium spa covers for your hot tub.

Our spa covers feature strong, energy-efficient cores made from virgin EPS foam. Virgin EPS Foam Cores   
Our insulating, tapered foam cores are strong, energy-efficient and will shed water.

SpaLux Premium Spa Cover Fabric SPALUX Premium Spa Vinyl    SpaLux premium spa cover vinyl
The best performing vinyl covering fabric due to its superior strength and UV resistance.

12oz polyester double-laminate bottom material Strong Polyester Bottom Material
12oz. Double-laminated. Treated and tested for chlorine, bromine & ozone resistance.

Our covers feature premium rubber-grip handles Convenient Open/Close Handles    more information on premium rubber handles for spa covers
Upgrade to rubber grip handles for a nominal fee
Super-strong featuring a rubber grip for easy opening & closing

6 mil vapor barrier helps keep the moisture out of the cover's foam core. Water Proof Vapor Barrier    6 mil vapor barrier
Double-wrap your foam for more protection.
Industry-leading thickness & protection. Helps keep the moisture getting into your foam cores.


Free upgrade to adjustable straps Strong Tie-Down Straps   
Our covers come with all the hardware you need to install it. Broken clip? Don't worry. It's all included with your new spa cover.

Steel support beams Steel Support C-Channel Beams   
Our steel support beams are 2.5" wide and offer maximum strength to discourage bowing.

UV-resistant Sungard thread is industrial strength UV-resistant SunGard Thread
93# UV and mildew-resistant polyester industrial thread keeps our covers stitched for years.


ASTM spec manufacturing ASTM Safety Cover    Thermal Guardian spa covers are ASTM manual safety covers
Our covers are manufactured to meet or exceed ASTM 1346-91 for manual safety covers.

Why buy a Thermal Guardian spa cover from America's SPA-MART?

Our Thermal Guardian spa covers are a cut above the competition as a mix of the finest-quality spa cover at a competitive price. They feature the following, setting us above the competition:

Beautiful Tailored Appearance Beautiful Tailored Appearance
Our Thermal Guardian Premium Spa Covers are great looking!

Thermal Guardian spa covers are the best looking hot tub cover that you can buy

Over 20 Years of Spa Cover Experience Many Years of Spa Cover Experience. We've been doing this since 1983.
Are you buying from someone that knows spa covers or someone telling you what you want to hear? We know about covers because we have marketed and sold them for a long time.

Tapered Foam Cores for Rainwater Run-off Tapered Foam Cores for Rainwater Run-off more info
We offer a variety of densities and tapers to give you more of a selection of price to functionality. Our spa covers are tapered so the rainwater runs off your cover instead puddling on it. We highly recommend our Thermal Guardian models because they feature 2 " of fall instead of only 1" found on offerings from other retailers.

UV-Resistant SpaLux Premium Spa Cover Vinyl UV-Resistant SpaLux Premium Spa Cover Vinyl more info
Our SpaLux vinyl has been specially formulated for the rigors that outdoor spa covers face. Exceeds the specifications of premium marine-grade vinyl.

Exceeds the ASTM F1346-91 specification for manual safety spa covers Exceeds the ASTM F1346-91 specification for manual safety spa covers more info
Thermal Guardian spa covers exceed the specification for center-deflection perimeter rescue and the safety labeling requirements of ASTM F1346-91. Some jurisdictions are requiring that spa covers be manufactured in accordance with these guidelines.

Premium Materials = Premium Spa Cover Premium Materials = Premium Spa Cover
A spa cover is the sum of its parts. If you use good materials in the manufacture of a spa cover, you will get a good spa cover. In over 20 years of spa cover manufacturing, our manufacturer has found the finest materials available to build our covers. From the UV-treated thread to the industrial zippers and the premium SpaLux vinyl to the virgin EPS foam, Thermal Guardian premium spa covers are manufactured to the highest quality standard.

Over 20 Years of Spa Cover Experience Premium Materials + Superior Technology + Quality Craftsmanship
The recipe for a great, long-lasting spa cover is simple. You start with Premium Materials. You acquire Superior Technology and assemble a team of experienced Quality Craftsmen and women who are paid to care what the product looks like. The watertight vapor barrier is sealed with a 9' long computer-controlled impulse sealer that makes a seal second to none. It is drastically better than foam cores sealed with small, undependable hand sealers. Our covers' patterns are cut by Otto. That would be the computerized cutter that doesn't make a mistake within a 1/1000th of an inch. There aren't computers that sew the cover, but even better a team of seamstresses tailor your cover to the fit you require.

Best seal in the industry

Fast Delivery 10-14 days plus freight Custom-Made Especially For You more info
Our custom made-to-order spa covers are all specifically crafted for you and typically ship in 4 to 10 weeks. Need it faster? We offer a Rush Service so it ships in no more than 3 days!

Patterns are cut by a CNC cutter and sewn by our experienced craftsmen and women.

Thermal Guardian Spa Covers Are Available In These 9 Vinyl Colors & 5 Additional WeatherShield Colors

hunter green
ash grey
light blue
navy blue
weathershield black
weathershield brown
weathershield grey
weathershield mahogany
weathershield taupe
Clicking on each color will open a new window with a larger color swatch