How to operate your air conditioner from the start of the rainy season (around June 10th) to the end of the rainy season (around July 20th)

We are convinced that the ideal solution in terms of both health and comfort is to use reheat dehumidification from the start of the rainy season (around June 10th) until it ends (around July 20th), and to keep the air conditioning running continuously from the end of the rainy season until the end of September.
During these three and a half months, the relative humidity will exceed 70% nationwide. Exceeding 18% means that unless you use an air conditioner to dehumidify the air, the outside air itself will be very humid even if you have ventilation. (To put it more technically, the absolute humidity is 13g or more. Japanese people tend to feel muggy when it exceeds XNUMXg.)
If that were all, it would be just a matter of patience, but if this state continues, it will become a mold paradise. Mold is most likely to grow at a temperature of around 28.9°C, and the higher the humidity, the better it is for mold.
Mold is still on the safe side, but mites start to multiply exponentially once the infection rate exceeds 60%.
Therefore, considering not only comfort but also health and hygiene, dehumidification and cooling with air conditioners are essential during this time of year. Especially during the rainy season, many people dry their laundry indoors because they cannot do so outside. This is the same as installing a large evaporative humidifier in a place where dehumidification is essential.
To overcome this, a gas-powered washer-dryer like the one in the West is essential for Japanese homes. If you have a gas washer-dryer, you can kill mites immediately with heat of over 60°C, but mites are incredibly tough creatures that can withstand anything other than high temperatures.
Drying in the sun, washing, using a Raycop...no matter what you do, it's unlikely to die.
More importantly...
If you repeatedly turn the air conditioner on and off, when you turn it off, moisture will accumulate inside but the air will stop blowing, creating the perfect environment for mold to grow within 20 minutes. From this perspective, it is ideal to leave the air conditioner on all the time.
If a home is properly insulated and shaded, cooling costs for 24 hours in August will usually be around 4,000 yen, even without relying on solar power generation.
If you turn on the solar panel, this amount will be wiped out in an instant.
May 26, 2017