Panasonic CU-W28BKP5 Mode D'emploi page 17

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Make sure that the doors and windows are shut.
Otherwise, cooling and heating performance will
be reduced and electricity cost is wasted.
Proper airflow direction adjustment. Set the
airflow direction louvers horizontal for Cooling
Operation and downwards for Heating
Operation. Operation result will be better.
Cooling
Keep blinds or curtains closed. Do not let sun-
shine enter the room directly. About 5% of
electricity cost can be saved.
Use insulating material for better performance.
Use insulating material during construction or
renovations. It will save electricity cost.
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