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Thermal Information

We all have a general understanding of the insulation R-Rating System.

R-Rating is a measure of how a material resists the flow of heat through that material. There are now many superior, heat-retaining materials available to insulate these days instead of the 50-year-old hot tub style design with thick foam covers.

We at E2E have tested the E2E Swim Spa Cover against the 3 inch R-19 foam cover and the 5 inch R-30 foam cover. The E2E Swim Spa Cover outperformed them both in climate control test chambers, saving customers daily energy consumption and costs.

There are two reasons for this, which link directly to the:

1. Materials used in the E2E Swim Spa Covers®

  • We use a full layer of Radiant Barrier to reflect infrared heat waves back into the water which stops radiant heat loss.

2. The design of the E2E Swim Spa Cover.

  • The E2E Cover’s one-piece system locks in heat vapor which stops convective heat loss. There are no sections or seams for heat loss like on an outdated conventional hot tub style cover.
  • Air trapped in our multi-layered cover stops conductive heat loss.

These factors; the locking in of the heat vapor, the air entrapment within the cover and the radiant barrier reflecting heat waves back towards the water is why we outperform the other cover systems.

The E2E Cover® provides consumers energy efficiency, one-person ease of use, and longevity.


The following testimonials extracted from the from the E2E Website are from customers who have purchased an E2E Swim Spa Cover and have commented on the thermal benefits gained from the E2E Swim Spa Cover.

There are many other testimonials received from customers on our website under the Testimonials webpage.

The link below will take you there.


I just wanted to give you a heads up we are currently doing another Home Show this weekend and have your covers up there again. Wow people really do love your covers, I am equally impressed now that I have seen them in person!

Chad…Missouri…April 2018

We are so pleased with the spa cover and the customer service was above and beyond. Thank you so much!

Brian Lowman…Windsor, MD…February 2018

Our cover has been working great all winter long in northern Michigan. It’s been a joy to swim while the rest of the world is covered in ice and snow. Our home is near net zero and we’ve been able to heat our pool and spa efficiently.
Ryan Knight…Michigan…February 2018

Awesome product and has made a huge difference in the look, temperature and usefulness of our swim spa…Thank you.

Jeff Meyers…Fredereck, ME…November 2017