Ceiling fans·9 guides
Power consumption and energy savings
A ceiling fan's consumption can be worked out: a power in watts, a number of hours, a price per kilowatt-hour. These guides set out the sum, give the assumptions and let you redo it with your own figures.
They also cover winter mode, which pushes down the warm air gathered under the ceiling, and cost comparisons with air conditioning and heat pumps.
Ceiling fan or reversible heat pump: the real calculation to cool down without breaking the bank
A reversible air-to-air heat pump costs 2,000 to 5,000 euros fitted and draws 500 to 1,500 W; a ceiling fan 157 euros and 5 to 30 W. When one is enough, when the other is required, and why both together are often the best answer.
How much does a night under a ceiling fan cost? The calculation to the cent, versus air conditioning
Watts, kWh, electricity price: the real cost of a night and a summer under a ceiling fan, compared with a portable air conditioner and a tower fan.
Ceiling fan winter mode: how much it saves on heating, in numbers
Reverse rotation, warm-air stratification, thermostat lowered by 1 to 2 °C: the real calculation of heating savings with a ceiling fan.
Cutting your summer electricity bill: the watts compared
Air conditioning draws 1,000 to 2,500 W, a DC ceiling fan a few dozen watts: the concrete annual maths of affordable summer comfort.
Buying a ceiling fan in September: the smart calculation
Why early autumn is the right time to install a ceiling fan: reversible winter mode, better-spread heating, useful 12 months a year.
Ceiling fan power consumption: kWh, costs and AC comparison explained
How much does a ceiling fan really use? Precise kWh and euro figures, AC vs DC motors, and a full comparison with air conditioning.
Air conditioning and ecology: the real climate impact and sober alternatives
kWh, HFC refrigerants, urban heat spiral: the real carbon footprint of air conditioning decoded, and the sober alternatives that actually work.
Passive cooling: vegetation, albedo, shading and natural ventilation
Vegetation, albedo, shading, natural ventilation: the principles of passive cooling to stay comfortable with no electrical device.
Summer comfort without major works: 10 gestures ranked by cost and impact
Improve summer comfort without major renovation: 10 gestures ranked by cost/impact ratio, from solar film to ceiling fan, to get through heatwaves without air conditioning.
From reading to choosing