We’ve 3 units installed in a big conference hall and one unit in my bedroom I must say its performance is quite good and coming to electricity saving you’ve "ECNO COOL " option with snowflake symbol in remote what it does means it will operate in 1~2C above then the set temperature and still can give you the same comfort of the input temperature given by user for ex: if I want the unit to operate at 26C in normal mood it will run in 26C and gives comfort of 26c but in ECNO mode I can get the same temperature comfort of 26* at 27~28C in ECNO mode so 26C in normal=27~28*C ECNO mode! sounds stupid? nope friends what it actually does is it uses "Air circulation" or air flow to give us the same cooling comfort(comfort to the body) of 26 even at 27~28 .so how does it save 20% bill? well if the air conditioner operating temperature is more close to the room temperature the much less time the outdoor unit will be on work resulting less outdoor working times and saving energy. electricity bill may vary from state to state and unit rate is different once you crossed 100 units so I cant judge with specific my bill but it has been 6 months and ECNO mode does saved 20% as it promised and my normal comfort range is 27~28 in ecno mode and anything less .i feel elsa in frozen .no problems still yet thank GOD for that and unit was made in Thailand so quality was good and cleaning filters also a simple job .this review is not paid and I’m not working for anyone I’m a YouTuber and you can find me in "life21Channel "in youtube but this unit review was not available in my channel .I’m happy to help you based on my ownership:) .if you have more dimes go with "Inverter in Panasonic " if you want a good 5 star MSGK 18VA is worth considering for large rooms cause of the super ?powerful’BLOWER "it has:)