How to use air conditioning to save energy?

"1 Do not block the air outlet of indoor and outdoor units. It will affect the cooling / heating effect and cause waste 2 The connecting pipe of indoor and outdoor units of air conditioner shall be shortened as far as possible to improve the efficiency 3 When not in use for a long time, please pull out the plug 4 Avoid direct sunlight in the room 5 At night, you can use the sleep key or set the timing operation 6 It can reduce the heat exchange inside and outside the room, which is beneficial to save electricity and pay attention to the regulating room 7 It can save more than 10% in temperature, 1 ℃ higher in refrigeration and 2 ℃ lower in heating, but the difference is almost imperceptible to human body."