HINTS FOR ECONOMICAL OPERATION
Maintain room temperature at comfortable level
Clean air filters
The clogged air filter impairs the performance of the air conditioner.
Never open doors and windows more often than necessary
To keep cool or warm air in the room, never open doors and windows more often than necessary.
Window curtains
In cooling, close the curtains to avoid direct sunlight. In heating, close the curtains to keep the heat in.
Get uniform circulation of room air
Adjust the air flow direction for the even circulation of room air.
Clean, please.
Gee, chilly
Control
Blows upward 
Air flow adjustment
Cool and dry air
Warm air
Blows downward
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