Upon arrival customer said that both his units are not keeping up the temp. Checked the units and sub cooling was low on both of them . Customer has 2 units one is 1.5 tons and the other one is 2 ton. Noticed that the A/H 2 ton is connected to the condenser 1.5 tons and the opposite. Need to come back with a comfort advisor to do a heat load and give quote on swapping the units to the one they belong.