Translations:Chauffe eau solaire/5/en

For a two people household, you can expect 3 to 4m2 (32 to 43 sq foot) of solar thermal panels to cover 90% of the hot water needs during the year. The hot water tank will take over during the cloudy days. If there are more inhabitants, therefore more water being consumed, you need to increase the size of the solar panels. For example, 6m2 (64,5 sq foot) for 6 people.