I agree with shophound. Need to take indoor ambient,indoor wetbulb,delta across indoor coil, outdoor ambient,pressures, subcooling and superheat, and compressor amps. Also indoor and outdoor model and serial #s. Just one question more,"Does system use a TXV or piston metering device. Most R410 systems use TXV.
[Edited by topdog on 05-25-2005 at 08:57 PM]