Fans are notoriously tricky to get right.
That’s partly because they’re often hard to find, and partly because the most popular ones tend to be pricey.
But new research has shown the ceiling fan that has the most fans is the kind that can be easily removed and replaced.
The researchers tested two different models of the ceiling fans that are available from a range of manufacturers, and they found they are both extremely efficient at pulling air from the system to push the heat away from the fans, but the Retractible Ceiling Fans (RCFs) are much less efficient.
The average power output of a fan rated between 30 and 40W was found to be the same across all models.
But there was a notable difference between the models: The Retractables are the least efficient.
At only around 20W, they were the least effective.
The same was true for the RCFs, who were around a third of the power of the other two models.
The study’s authors say that the results may have been influenced by the fact that these two models are relatively expensive.
In terms of wattage, they are also the cheapest of the three.
“In the end we didn’t find that the RCS is actually any more efficient than the other three,” said Dr Jules Hofer, from the Department of Electrical Engineering and Computer Science at the University of Gothenburg in Sweden.
“We did find that it was not that efficient when you look at the power usage of the two fans.”
The study was published in the Journal of Appl.
The research is published by the European Association for Computing Machinery.