The most cost-effective way to use a ductless air conditioner

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I’ve heard an *outrageous* amount of contradicting opinions. One says to leave it on all day, another says to turn it off when you’re away from the house, and then another says to adjust the temperature accordingly throughout the whole day. But even within the answers that I have been finding, there is a bunch of terminology that I can’t wrap my head around.

I live in a 2 bedroom apartment with ceiling fans in every room. There is one ductless airconditioner in the living room which is the center of the living space. What’s the most effective way to go about using it?

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Anonymous 0 Comments

It all comes down to that there’s no such thing as a free lunch. Any time it’s working, it’s taking power to run it.

Whether to run it all day or not is a question of personal comfort. Are you in some hellishly hot and humid place? Then it might make sense to run it constantly, to avoid excess humidity in the house and for the sake of the comfort of any pets and so on. But make no mistake, that’s going to cost you. You’re just deciding it’s worth it.

The less you use it, and the less it has too cool, the cheaper it’ll be. So you’ll save by not telling it to cool as much, by avoiding using it when possible, and by insulating the area (eg, keep the doors closed). Avoid running fans and devices inside if possible, because they make heat that’ll take extra effort to get rid of. If you’re really serious about it, it could make sense to do something like placing your gaming computer in another room and just running wiring to it.

One thing that may make sense is to look at how your power company prices power, and optimizing for that. If power is very cheap at night, you could actually save by making it cool more than you need at night, and letting things warm up in the morning.

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