this post was submitted on 02 Sep 2025
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I watched this. It was of interest to me because I must run two dehumidifiers in my house and they use a ton of energy. Unfortunately, this desiccant dehumidifier would use even more energy. Hoping someday someone figures out how to build a more efficient one.
In the meantime, I think manufacturers need to build all dehumidifiers with a repeat cycle timer built in. I find it far more energy efficient to run for some period like 30 minutes till the humidity drops low — like 45%, then shut off for 60-120 minutes while the humidity slowly creeps back up until the cycle repeats. Most dehumidifiers work based on a humidity threshold and will constantly click on and off as the threshold gets crossed. In my experience, this uses a lot more energy. Being in a high cost state it is completely unaffordable.
If you are running an AC, you might be able modify it to reduce the humidity.
AC units naturally dehumidify (as TC points out, they are essentially the same thing as traditional dehumidifiers). However, the amount of moisture they pull out is mostly related to how long they are running, not how cold they can get. This means that if you have an overpowered AC, you get less dehumidifying effect because the AC is on less.
Some ACs let you reduce their power, which will increase their duty cycle and increase the amount of water they pull out of the air. It also helps improve their lifespan as they need to cycle less.