We recommend you use a Thermal Blanket with your spa cover
This is a photo of the a spa with the cover folded back and the "Thermal
Blanket" over the spa water. We always include the best closed cell foam
thermal blanket with our spas. The blanket adds approximately R-10 insulation
value to the top of the spa where heat loss is the greatest. It does this
by stopping the evaporative cooling, and creating a "dead air space" between
the cover and the water. It also cuts down on the use of chemicals by; 1.
Helping to keep the ozone in the water for a little longer; 2. keeping the
sanitizer from "gassing off"; and 3. It allows us to keep the air controls
turned on all the time which oxygenates the water, killing bacteria all the
more, (like a fish tank). (You can't do this with a full foam spa or spas
that draw in cold air through the air controls.)
You will notice that the covers we offer are the stoutest standard cover
you can get, without spending a fortune. They have metal inserted inside
the foam to give extra added strength. Notice the handles inside the hinged
parts. You can grab the cover and pull it from inside the spa, just before
you get out. The foam is two pound, instead of one pound often found on
lower quality covers. The inside is heat sealed, and the outside is all
sewn seamed, for longest durability. We have found that "heat sealed" outer
vinyl has a tendency to crack after a while. Once the vinyl has been heated
it is not the same flexible vinyl any more.
The Price for the cover is $369.00.
The Thermal blanket is $8.33 per foot in 88 inches wide. See the 11 different cover
colors.