The long, hot afternoons typical of these months have already begun and, with it, the need to try to cool the house. To do this, many people choose to buy a fan, because it is a cheaper alternative to air conditioning. However, many people do not know how to calculate their energy cost and decide not to turn it on at night, making it difficult to fall asleep.
The proximity of the dreaded tropical nights, increasingly present in our country, has caused many people to be forced to depend on appliances that cool your rooms so you can fall asleep. Given the high price of electricity in Spain, many have chosen to choose a fan for this task, although it is advisable to know howhow to calculate energy expenditure what you will do before choosing which one to buy.
To do this, it is necessary to look at a piece of information that is specified in the characteristics of each model: the power in watts. This is represented by a figure followed by the symbol “W” and usually oscillates between 25 W and 100 W in the most modern fans. However, there are also some that consume even less energy.
How to calculate how much energy a fan consumes and its final expenditure on the electricity bill
Having this figure, it is important to know how to convert it to kilowatts per hour, Well, it is what will appear on the electricity bills. For which, it is necessary divide the wattage by 1000. If a fan has 65 W, this figure must be divided by 1000, so the kilowatts per hour it will consume will be 0.065 kW.
Once this calculation is done, the kilowatt figure obtained should multiplied by the number of hours it is on. The usual thing is to sleep between 7 and 9 hours a day. If you slept the 8 hours recommended by doctors, the ventilator would spend about 0.52 kW per night.
In turn, this number must multiplied by the price per kilowatt time set for each time slot. On May 27, The average price is 0.1418 euros per kWhwith a slight rise during the night hours. Using this figure as an example, the approximate price of having a 65W fan on would cost 0.07 euros.
What information to look for before buying a fan
Therefore, it is important to know the number of watts that each model uses when it comes to choose which fan to buy. In addition, it is advisable to know that the number of blades influences the force of air flow and energy expenditure. Well one of three blades is more advisable for large spaces or even open areas; while a four-bladed one is usually better for rooms such as bedrooms or offices.
If all these factors are taken into account, it is possible to acquire an effective, efficient fan with low energy consumption that makes the long summer nights more enjoyable. The most important thing is to look at the number of watts it uses and take into account the price per kWh established for the time slot in which you want to use it.