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Solar Pool Covers Can Reduce Heat Loss Overnight

Solar pool covers can reduce the amount of water that evaporates from your pool, which can help eliminate heat loss and keep your pool much warmer. A solar cover can also extend the length of your pool season by stopping heat loss during the cooler nights in spring and autumn.

Water evaporation can account for up to seventy percent of your pool’s heat loss, and a solar swimming pool cover limits evaporation by trapping and heating a layer of air between the cover and the surface of the water. The majority of solar pool covers are thick pieces of material with tiny air pockets that are heated by sunlight and this heat is then transferred directly to your pool water. 

These products can be extremely efficient at heating up the water in your pool, at least at the surface. They can even be used in conjunction with a pump to entirely heat your pool in hotter climates. When determining which solar swimming pool cover to purchase, you need to take a few things into account. Firstly, you need to make sure that the cover will actually fit your pool!

solar pool coverPay close attention to the covers you find online: most of them should list the size and shape of pool that they are suited for, and some covers may need to be trimmed to fit oval or kidney shaped pools. 

Another thing to take notice of is the thickness of the solar cover itself, which is almost always measured in millimeters. A thicker pool cover will usually be better at trapping heating and transferring it to your pool, but a thicker cover also means more weight. 

If you have a very large pool, then a thick cover may be almost impossible to move around yourself. 

Although many people have reported that they were able to simply cut the cover into smaller strips, making it easier to put the cover on and take it back off themselves. 

Thicker covers also cost more money, so if you live in a warmer climate, then it may not be necessary to purchase a 16 mm cover unless you are planning on heating your pool entirely with the solar cover. 

There are many different brands of solar swimming pool covers available for purchase in local retail stores as well as most online retailers. Below we will have a look at two of the top brands and provide more information on each one. These products will give you a good reference point for the price and quality you should expect from a decent solar pool cover.

Swim Time 12 Mil Solar Blanket For In-Ground Pools

solar pool coversThe Swim Time solar pool blanket is a great addition to your in-ground pool, and extends the time of year in which you can use your pool. The blanket is durable, 12-mil thick, and loaded with thermal bubbles that retain heat even at night and on cloudy days. The bubbles work in a similar way to a magnifying glass, focusing the sun’s heat into the pool water. 

By covering the pool, the cover also prevents evaporation, saving you money on refilling and further protecting the water’s temperature.

As well as warming your pool, the cover has other practical applications. 

By keeping dirt, debris and leaf litter out of the water, you can extend the life of your pool’s pump, and keep the water more clean and sanitary. You can even save money on the cost of the chemicals needed to clean and treat the water.

The transparent blue color ensures that the sun’s warmth can reach through to your pool. In fact, the solar blanket is capable of making your pool up to 15°F warmer than an uncovered one. The blanket is also UV-protected itself, so it won’t degrade, even under the harshest of sunlight.

The blanket is suitable for in-ground pools and is available in a range of sizes, from 12 x 20 feet, right through to 30 x 50 feet. The covers can be cut down to size to fit smaller or irregularly shaped pools.

The covers do weigh more when wet than dry, but they should still be able to be moved and lifted by a single person. If the cover is particularly large, you may want to consider using two people or having a simple mechanism in place such as a solar pool cover reel, or cutting the cover into two smaller covers.

The solar blanket includes a 5 year warranty, and retails from around $50-$300, depending on the size you need.

12 Mil Solar Pool Covers by Midwest

 Midwest makes another very popular line of solar swimming pool covers that are slightly cheaper than the In The Swim products due to the fact that they are only 12 millimeters thick instead of 16mm. These covers are recommended for warmer climates, or for people who use a traditional pool heater and simply wish to reduce heat loss. 

midwest pool coversOverall the 12 Mil Pool Solar Cover is highly recommended and you should be able to purchase one at many different online retailers for between $50 and $100, while the largest 20 X 40 cover costs around $130. 

Midwest also produces a line of smaller solar spa covers that can also be used for smaller round pools such as aboveground pools, and they usually cost somewhere between $20 and $40.


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