Ceiling fans, if used correctly, can reduce heating costs and refrigeration. Even if you can only make small adjustments to the thermostat with the fan, the energy savings can be significant: the energy consumption of an average ceiling fan at high speed is about 75W. For comparison, an air conditioner can consume 2000W and a small electric heater 750W.
On the other hand, there is energy-saving ceiling fans which further reduce energy consumption: some of these low-power fans only consume 15W of energy, although they produce a good airflow.
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Energy saving
How much money you can save with a ceiling fan depends on many factors, such as the size of your home, the number of watts the motor needs to run, the climate, your main heating and cooling systems and the cost of the fan. electricity in your area.
However, several organizations have published estimates that you can use as a guide. For example, the University of Florida Cooperative Extension reports that a ceiling fan can reduce a room’s cooling costs by up to 8%.
ceiling fans in summer
Most people know that a ceiling fan can make a room more comfortable in hot weather, but some details are often overlooked. A ceiling fan does not actually lower the temperature of a room. On the contrary, the fan creates a gentle movement of air that makes people in the room feel cooler and more comfortable.
This means that a ceiling fan is of little or no use if the room is unoccupied. In addition, you should position the fan so that you regularly feel its breeze. The fan will be less efficient if it is installed in an unused part of the room or on a very high ceiling.
ceiling fans in winter
Experts disagree on the benefits of running ceiling fans during cold months. Some fans are designed to spin both counterclockwise (“forward mode”) and clockwise (“reverse mode”).
In reverse mode, the air is pushed towards the ceiling. In theory, this heats the room by circulating warm air near the ceiling towards the floor, and if the fan is set to a low speed, there are no unpleasant drafts.
This technique should be useful in certain situations, such as when a wood stove is heating a room with a very high ceiling. In other circumstances, the energy savings may be insignificant.
Kansas State University Extension Discourages Use of Ceiling Fans in Winter, But University of Arkansas Reports a Ceiling Fan Can Cut Heating Costs by 20-30% .
Choose a ceiling fan
You should choose a ceiling fan based on the size and purpose of the room. The cooling effect of a typical 91 cm fan extends about 2 meters from the center of the fan, and the reach of a 1.20 meter fan is closer to 2 meters.
A high-quality 1.40 meter model has a range of up to 3 meters. If you want your fan to cool an entire room, you will need to match the size of the fan to the size of the room.
However, a smaller fan may be fine in a large room if your normal activity takes place directly below the fan; For example, you can place a fan above the table in a dining room or above the bed in a bedroom.
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