For this job I did an evaluation. System would reach over 120 and system would shut off to cool before turning back on. Filter was caked in a white dust, changed filter and ran both zones. System stayed within tolerances for over 30 minutes. Outdoors, suction line temp was 185 and current ambient is 80. In cooling mode reading 9 subcool, and 40+ superheat. TXV gone bad. Spoke with homeowner about updating to Home&Budget System heating when I left