Hi,
I purchased this AC in 2006 and till today 2019 I am using this AC. I got the gas refilled only once. I have total 4 window ACs in my home: 2 Assembled, 1 General and this one Carrier. This is still the best among other 3 which are purchased in last 5 years only.
If I happen to buy another it will be carrier only.
Thanks