Removed existing filter dryer, TXV and Compressor. Installed new TXV, filter dryer and compress. Added 1 oz of acid away ( in accordance with product information chart ) Pressure tested system 178.5 psi with no reduction after 10 min test. Removed all moisture and non-condensable gases from refrigerant circuit by pulling a vacuum to 456 microns , rose to 495 after decay test. Added 12 lbs of R410A. Tested system. Functions as designed. Refrigerant pressures and temperatures are appropriate for indoor and outdoor conditions. Superheat of 11* and Subcool of 11*