A-PAM inverter technology is the upgrade of 180 sine wave inverter. it adopts additional momental control to decrease the vibration in the low compressor frequency and also contribute to great power saving. By A-PAM DC inverter technology, it can give 66% power saving approx. Comfortable Feeling 66% Power saving work upto 52 ℃(T3 condition) A-PAM DC Inverter technology A-PAM inverter technology Fix the communication frequency between indoor and outdoor at 180Hz that allow compressor to work smoothly and vibration free in case of Voltage fluctuation. 66% Power saving By A-PAM DC inverter techonology, it can give 66% power saving approx. 46°C Full BTU Haier Innovative Design and Technology provides what you paid for. Full BTU even at 46°c hot outdoor ambient ensures full cooling capacity of the BTU rating mentioned on the product without any loss of cooling efficiency. You can enjoy the comfort even if there is no electricity. Air Conditioner* can work on UPS in case of power outages, a small device enables Haier Air Conditioners to work on your Existing Home UPS*, if it has Minimum 500 watts of vacant load, it will give you 3-4 hours backup time. (depends upon the health of the battery) * UPS Module Device is mandatory to operate the AC on UPS.