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In the summer, we use a window air conditioner in our bedroom to be able to sleep comfortably at night. It takes a while to cool, and I know it uses quite a bit of energy. Here are a few steps we take to reduce total energy usage:

  • Set the mode to "energy saver," which turns the fan off periodically once the temperature reaches the set point
  • Set the thermostat to 78F / 26C
  • Keep the bedroom door closed when the AC is running
  • Keep the bedroom blinds closed during the day so that the room doesn't heat up too much

What are some other steps I could take?

There is a gap of about 2cm under the bedroom door... should I seal this? Will it make much difference? I also didn't invest much time sealing around the AC where it goes through the window. There are no large gaps, but are there ways I could improve the air sealing?

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