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Comment by nottorp | Hacker News Reader

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nottorp·

Depending on your local climate, I'm not sure the ceiling fan advice works any more. Not on 39-40 C summer days.

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What's with this all or nothing attitude?

Just use both! A ceiling fan will certainly reduce your dependence on A/C, if it doesn't eliminate it.

I believe a rule of thumb is that ceiling fans can reduce perceived temperatures by 5 C, so definitely not sufficient above a certain temperature.

Source: other people, so not very reliable

Edit: the click-through link actually mentions 3-8 degrees

It does for a billion+ people who cannot afford aircon and use ceiling fans.

I don't think it "works".

https://en.wikipedia.org/wiki/2023_Asia_heat_wave

~200 deaths and ~450 hospitalizations is "works"?

Why are you assuming those hospitalizations and deaths happened indoor and inside homes where ceiling fans are installed?

The article details closed schools etc. Presumably many of the places closed also had ceiling fans and therefore deemed insufficient to counteract the health crisis

The wikipedia entry talks of widespread power outage. This seems to be common in these parts of the world during summer. Can’t blame ceiling fans if you cannot turn them on.

Yeah agreed. Especially in humid climates. Like saying turn off all the lights and use a head torch. Like yes it will save energy. Also very uncomfortable and inconvenient.

At 40 outside we're going beyond uncomfortable towards health threatening.

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