La toile solaire : votre alliée pour une piscine plus chaude et plus économique

Solar pool covers: your ally for a warmer, more economical pool

Written by: Académie Club Piscine

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Published on

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Time to read 3 min

Summer is in full swing, and nothing beats a dip in a perfectly temperate pool. But did you know that an accessory as simple as a solar pool cover can extend your swimming season while significantly reducing your electricity bill? Indeed, this inexpensive tool can save you up to 45% on your pool's water heating costs thanks to a solar cover.

Concrete Savings, Calculated by Hydro-Québec

According to Hydro-Québec, a 24-foot diameter above-ground pool equipped with a solar cover can potentially generate up to $180 in savings per summer. For a 16 x 32 foot inground pool, these savings can reach $230 for the season. These figures speak for themselves, especially in a context where every saved dollar counts.

One small detail to remember: to achieve these results, Hydro-Québec specifies that the cover must remain in place for approximately 16 hours a day throughout the swimming season, which is a good benchmark if you're wondering how long to leave it on the water daily.

Choosing the Right Thickness

At Club Piscine, we offer solar covers in two thicknesses: 7 mil and 11 mil. The 11 mil models come with a 6-season warranty, compared to 4 seasons for the 7 mil version. An important detail to note, however, is that water maintenance directly impacts the cover's lifespan. "We have seen covers completely dried out after just one summer due to too high a concentration of chemicals in the water," notes Club Piscine.

Hence the importance of maintaining a good chemical balance in your pool, both for your comfort and for the longevity of your accessories.

Undecided between a 7 mil and an 11 mil solar cover?

The Golden Rules for Maximum Efficiency

To get the most out of your solar cover, here's the routine to adopt:


  • Install the cover at the end of the day, after adding your daily maintenance products.
  • Remove it the next morning so the pool can benefit from the sun and the rays can penetrate the water to warm it. This will limit heat loss during the night, regardless of the pool's format, inground or above-ground.
  • Never leave it on the water for more than 48 consecutive hours, to allow for water oxygenation.
  • Remove it completely before swimming: Hydro-Québec reminds us that you should never swim in a pool covered with a solar cover.

This routine, valid for both inground and above-ground pools, limits heat loss during the night while maximizing the natural warming of the water during the day.

Two Myths to Debunk

Myth #1: "I have a water heater or heat pump, so I don't need a solar cover." False.


Some consumers mistakenly believe that with a water heater or heat pump, they don't need a solar cover. This is as erroneous as thinking that because our home has a heating system, it doesn't need a roof! It is therefore important to cover the pool to preserve its heat.


Myth #2: "I need to keep my pool covered during the day for it to heat up." Again, false, and it's even counterproductive.


The best way to heat the water is to let the sun's rays penetrate it directly. Contrary to popular belief, the cover's bubbles do not act as magnifying glasses for heating; their only function is to ensure the cover's flotation. They must therefore be in contact with the water, and not insulate it from the sun during the day.

Significant Ecological Benefits

Beyond saving money, the solar cover is also beneficial for the environment. It retains heat, limits evaporation and water waste, and reduces the use of sanitation products.


  • It reduces water evaporation, thereby limiting the need for frequent pool refilling.
  • It reduces the use of chemical products, as well as their evaporation into the ambient air.

Proper Cover Maintenance to Extend Its Lifespan

Proper maintenance of your pool cover makes all the difference in maximizing your investment:


  • Use a protective cover over your solar cover when it's not in the water, to protect it from UV rays, weather, and dirt (pollen, dust, bird droppings).
  • At the end of the season, clean the cover and let it dry completely before folding it.
  • Store it in a dry, shaded, and temperate place to prevent it from freezing during winter.

The solar cover is a simple yet incredibly effective accessory: it extends the swimming season, reduces your heating costs, protects the environment, and, with proper care, will accompany you for several seasons.

Ready to enjoy a warmer pool and make real savings?