originally my mehran had denso, but after 2 seasons its comp. finished, i replaced with same one, it also finished within few months. i searched in bilal gunj and bought a few hours used senden, which is working very very well with r-12 gas. every thing eals is of r-134, but it is working very well. i use my a/c to de-mist regularly in winter with heater combination, and its around 2.5 years, and all my system is working very very good. price was 4500.