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Why A Heated Pool Must Always Be Covered

April 1, 2014 by Phil Nataghi

Lots of people are surprised to hear that heating a pool/spa and not covering it when it isn’t being used makes a significant impact on your budget. There is no doubt that owning a pool is terrific fun for family and friends and that heating it results in it being more practical, particularly for children and the elderly. Utilizing an up-to-the-minute efficient pool heater, especially a heat pump, you will be able to heat your swimming pool whilst avoiding it breaking the bank nevertheless you might be astonished by the amount that can be saved if you use a good pool cover.

The major enemy of a heated pool/spa is evaporation since this is the way the majority of heat loss occurs. This is a problem regardless of the site of the pool however is much worse if the pool is directly affected by wind.

What impacts the level of heat loss? Well this is a normal event that happens at any temperature however the warmer it is the greater the heat loss. This applies to both the water temperature and the air temperature and therefore the warmer you like your swimming pool the bigger the problem. Humidly is an additional factor since the lower the humidity the greater the amount of heat loss will be. Wind is also a problem because, by blowing the humid air just above the water out of the way, it accelerates the evaporation. And therefore the greater the level of exposure to wind in your location the more evaporation will occur.

You can help lessen wind problems with a properly positioned windbreak however for users of pool heating equipment it is an unfortunate reality that the warmer you heat your pool the higher the level of evaporation will be. So a pool cover is essential. The significant advantage of a cover is that it is a vapor barrier which will minimize heat loss. In this way a pool/spa cover appreciably controls heating costs. You will discover several sorts of pool covers ranging from simple manual ones to costly powered systems.

It is invariably advisable to keep a pool covered when it is not in use. However having your cover on the pool will minimize the solar gain (sunlight warming the pool) however you are able to purchase covers intended to decrease this effect and this is worth bearing in mind when selecting a cover for your pool.

Having a pool cover also offers a few supplementary benefits. A cover lowers the requirement to top up your pool chemicals, reduces the requirement to frequently top up the water and, naturally, it keeps the swimming pool clean. As a result if you make use of a heater, or are thinking about getting one, make certain that you have a high-quality cover for your pool.