Does a Pool Heat up Faster with the Cover on?

pool heat up with cover on

As the pool season gets closer, we all want to start partying like lobstars. Now, that’s when the temperature comes in. The water is freezing cold and every year we ask ourselves “Does a pool heat up faster with the cover on ?”

Pool covers do help heat up the water faster, although some more than others. Temperature levels depend on wind contact and sun lightning. Translucent covers -also known as blankets- let most of the sunray energy enter the pool and raise the heat, while all covers reduce the wind contact and evaporation levels.

If you want to get to the deep-end on this topic, here’s everything you need to know to keep your pool warmer with your cover alone.

Does covering a pool make it warmer?

Blankets or translucent covers are transparent to help the sun rays go through. Even though we don’t consider the sun factor many times, it is a great help to warm it up. In fact, the energy transmitted into the pool (80%) can increase the water temperature by up to 12 degrees.

Once the solar energy goes into the pool, the cover traps it inside until a peak is reached. The final temperature will depend on the season, external temperature, and many other factors; but it certainly helps retaining it as much as possible for your splashtastic time.

How else do covers retain the temperature in pools?

An important factor that is often underrated is heat loss. Pool temperature loses heat way faster than you think, which adds up more expensive bills and less fun. That’s why covers exist.

The idea of covering the pool -whether it lets the sunlight in or not- is basically to prevent the pool from getting cold. This is because the wind -especially during nighttime- takes the heat with it, just like when we blow every bite of a meal that is just too hot.

Even when the weather is not that windy, the evaporation of water can take the temperature down up to 10 degrees. So, covering the pool is important to stop the wind from getting in contact with the water, reduce the evaporation levels, and prevent your bills from skyrocketing.

How long does it take for a swimming pool to warm up?

Take into account that all pools are different. They come in different sizes and shapes, which scientifically means more -or less- water volume, an important aspect when asking about timing. For that reason, this answer is addressed to those with average size pools.

In general, pools usually take 24 to 72 hours to heat up by 20 degrees with a heat pump. If you have a cover and a small pool, the timing will probably get closer to 24 hours –Shell yeah. On the other hand, it will get closer to 72 hours.

How long does a pool take to heat up by the sun?

Certainly, it will depend on the time of the year but it usually takes 8 to 12 hours to get to a comfortable temperature. On a clear day of late spring or early fall, a covered pool can heat up 5 to 6 degrees over the day, but there’s a good chance it will lose the energy overnight.

Summertime will make you happy as a clam because all of these numbers change for the better. Pools heat up in 3 to 4 hours and it doesn’t lose all the energy overnight, so it has a much more comfortable temperature on the following day.

What is a comfortable pool temperature?

Most residential pools consider that somewhere from 78 to 82 degrees will put on the slippers on most people. However, hitting the right degree depends on the likes of each person. Some people think that higher is better, while others prefer to save a little energy.

The Red Cross recommends setting the thermostat at 78 degrees for competitive swimming. The American Academy of Pediatrics, on the other hand, recommends using a ranging temperature of 87 to 94 degrees for children under 4 years old. Yet, the elderly physically challenged and people who suffer certain diseases are strongly recommended to look for the right temperature to meet their specific condition to avoid problems and even reduce their own.


I'm Wayne, owner of I'm a father of 2. I love reviewing products and showcasing the very best in my best of review lists. I want people to make an informative decision by going through these reviews before purchasing their selected products.

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