Asslam o Alekum,
Panasonic 18tkf-9, 18000 Btu
Sir, Amperage varies weather to weather and person to person, personaly i like to use blanket even in summers therefore my amp never goes down below 5-6Amp as i use on 20-22C in summer and in other rooms it is normally dependant on useage, like if you are using on 26C in extreme heat it goes up to 10.5Amp which is a good thing and within 1 hour it comes down to 3-4 and if keep using it i have personally seen it is working on as low as 0.9Amp in summer.
The manufactring origin is not mentioned in everything but i believe it is manufactured in Malaysia even if it is made in china does not matter it must have been manufactured in Panasonic factory which it known for quality products.
ERR is somthing between 10-11
So far much satisfied but was installed in a proper manner by professional guy
Let me know if you need anymore information