Just got bill for last stinking hot month after installing a new 24000 btu compressor , 4700 bht and that was average 20 hours per day. not to bad at all

If the compressor was more than 10K, I would have crunched the numbers on a new inverter unit. Might have had your money back in three years, with a three year old a/c instead of a 13 yo +/-. Also, If it was a blown compressor and they don't get the line set perfectly clean (or better yet, replace the lines), the new one will not last long. Thorough and meticulous? not often.

If the compressor was more than 10K, I would have crunched the numbers on a new inverter unit. Might have had your money back in three years, with a three year old a/c instead of a 13 yo +/-. Also, If it was a blown compressor and they don't get the line set perfectly clean (or better yet, replace the lines), the new one will not last long. Thorough and meticulous? not often.

Yeah I know about it however at the time I was out of the country and had my condo rented out so it was the easiest option. I payed 11k and I saved 1300 baht on last months bill (running at 28 - 29c) so it will pay for itself in one year and I will get the invertor if it fails but damn its super cold air ATM