The summer in Japan is very hot and rainy, many end up suffering from heatstroke. A great lifesaver is the Air Conditioning, however some foreigners who encounter it feel lost with those words entirely in Japanese. Of course, there are air conditioners from various brands and different types. Knowing the main words written on an air conditioner will help you use it.
Each remote control is different, so it is pointless to put a photo here indicating each button. What we can do is present a list of words that are present on remote controls so you know what each button does.
| Japanese | Hiragana | Romaji | Portuguese |
| 停止 | ていし | teishi | stop, turn off |
| 運転 | うんてん | unten | turn on, operate |
| 冷房 | れいぼう | reibou | Air conditioning |
| 暖房 | だんぼう | danbou | Heating |
| 除湿 | じょしつ | joshitsu | Dehumidify |
| ドライ | dorai | Dehumidify | |
| 自動 | じどう | jidou | Automatic |
These are the main basic functions of a Japanese air conditioner. The Dehumidify option is used to save energy, it does not heat the room but reduces the humidity in the air. The automatic option keeps the temperature at the standard suggested by the manufacturer.

More complete air conditioning
Some air conditioners have many more functions and settings. See below some words you may find on these air conditioners or even on heaters:
| Japanese | Hiragana | Romaji | Portuguese |
| 温度 | おんど | ondo | Control temperature |
| 風向 | ふうこう | fuukou | Fan direction |
| メニュー | menyuu | Menu | |
| 進む | すすむ | susumu | advance |
| 戻る | もどる | modoru | return |
| 入タイマー | Nyuu taimaa | Turn on timer | |
| 切タイマー | setsu taimaa | Turn off timer (cut) | |
| スイング | suingu | Swing function | |
| ハイパワー | haipawaa | High power | |
| ランドリー | randorii | Laundry mode | |
| 省パワー | shou pawaa | Energy saving | |
| 風量切換 | かぜりょうきりかえ | fuuryou kirikae | air flow |
| 運転切換 | うんてんきりかえ | unten kirikae | air flow |
| 送風 | そうふう | soufuu | ventilate |
| 強風 | きょうふう | kyoufuu | strong, high |
| 弱風 | じゃくふう | jyakufuu | weak, low, fan |
| 微風 | びふう | bifuu | very low, breeze |
| 静音 | せいおん | seion | silent mode |
| 運転 | うんてん | unten | operate, turn on |
Some of the settings mentioned above can be controlled from top to bottom. The words after air flow usually appear on the screen to show how it is configured.
- The swing function allows the fan to rotate from top to bottom;
- The laundry mode adjusts the temperature and humidity to dry your clothes;
- The air flow can be controlled to low, weak, and silent. You click the button several times to set it the way you want;
Well, I hope these words help you understand how the air conditioning works in Japan. I know that it is still necessary for you to have a basic understanding of temperature and how an air conditioner works to know how to set it the way you want. If you have any tips or suggestions, feel free to leave them in the comments below.
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