The pool experts / Tips for Pool Maintenance in Winter | THE COOL POOL by Fluidra

Although you may not use your pool in the coldest months of the year, it is very important to carry out maintenance work on it. A few years ago, this task involved emptying the pool (a costly and not very environmentally friendly practice), but over time new methods have come about, such as winterising, a much cheaper, simpler and environmentally friendly alternative.


Using the winterising system, a pool does not have to be emptied and the water can be kept in a perfect state until the following bathing season. The following brief guide gives an overview of three of the main aspects of this pool maintenance technique:

Cleaning the pool shell. The pool floor and walls must be clean at all times. A simple option to keep a pool shell impeccably clean is to use electronic pool cleaners, as their cutting-edge technology ensures a pool’s floor and walls remain spotless.

Water treatment. Naturally, it is essential to ensure that the water is of good quality. The use of a concentrated winteriser enables the water to be kept in perfect condition, as it prevents the formation of algae, fungi and bacteria.

Installation and maintenance of a cover. To prevent leaves and debris accumulating on a pool’s surface, the best alternative is to install an automatic pool cover. Whether above-ground or submerged, this type of mechanism is also an efficient solution for preventing accidents, especially in environments with children. In order to lengthen the service life of your cover and avoid unpleasant surprises, you should not forget to treat it with a mould inhibitor.

In order to winterise a pool, the water temperature must be below 15 ºC. However, if a pool is in a very cold area and there is the risk of the water freezing, additional measures must be taken. The first consists in lowering the level of the water below that of the skimmers. Furthermore, to prevent the water from freezing and causing the pool shell to crack, place an object that floats on the water. As it will move continuously on the surface of the water this will prevent freezing.

If you would like further information, we recommend that you take a look at the full guide on pool maintenance in winter that is posted on CTX’s website.