Plastic Solar Blankets VS Liquid Pool Covers: Round 2
by Monique Nelson on May 28th, 2013

If you happened to miss the first Round, Heat Retention, make sure you read it first. You can find it here:

Round 2: Water Conservation

Next to keeping a pool warm, a very big reason pool owner's and operators decide to start using a pool cover is to reduce the amount of water loss their pool experiences. As you know, every pool - whether it is indoors or out - will have to fight evaporation.

Water conservation is a hot topic across the world, and becoming more and more a subject of awareness as each day passes. Swimming pools consume a huge amount of water, so learning how to conserve as much as you can will be appreciated by your bottom line and the environment. It won't be bad for your reputation either!
If we go back to the US Department of Energy and their advice on using pool covers, they clearly state:

Besides offering energy savings, pool covers also do the following:

Conserve water by reducing the amount of make-up water needed by 30%–50%

outdoor swimming pool experiencing a lot of evaporation and same pool experiencing much less evaporation and water loss after heatsavr, the liquid pool cover, is added
Another authority conducted a trial to see how much water a liquid pool cover could conserve. The Salt River Project (SRP) - the Association that delivers nearly 1 million acre-feet of water annually within central Arizona and maintains and operates a variety of reservoirs, wells, canals and irrigation laterals - was concerned with the extreme quantities of water that were being evaporated by swimming pools in their area each year. They understood the difficulties posed by plastic blankets, and found the idea of a liquid cover intriguing. So they did some tests. 

They found that liquid solar pool covers reduce evaporation by 30 - 50%.

You can read the study here: Reduce Water Loss in Swimming Pools
I suggest you watch the following video, as well...
You might like this one's less than 2 minutes. Worth it. 
I was going to call Round 2 a tie. But then I put in the pictures up top - the ones of the swimming pool losing all that water through evaporation and the one beside it of much less evaporation. It made me think - for a plastic pool blanket to achieve those 30 - 50% water savings, it has to actually be covering the pool, and then the pool has to be closed. You would never get the effect of seeing those pictures, because in the "much less" photo the pool would be covered by a bubble blanket. With a liquid cover, the pool will be "open" at all times AND it will be conserving water. 

So, I give the ADVANTAGE to liquid pool covers. You can make your own decision, but that was my train of thought. 
Round 3: Safety will be up next!

Posted in Conserve Water, General Information    Tagged with plastic solar blankets, liquid pool cvoers, water conservation, reduce water loss from pools, reduce make-up water, liquid pool covers conserve water, water evaporation


Michael Fabian - October 14th, 2013 at 2:50 PM
We have a Jr. Olympic Pool in Carlsbad, Ca. and are looking to save in heating costs!
Thank you for your time.
Leave a Comment