Hvac heating HeatPump system(1st FL) R410A added 1.1LBS. Upon arrival spoke with customer. Needed to confirm with manufacturer that system is not a two stage system. Wiring at thermostat and unit shows system to be single stage. Verify with Diakin tech support that system is not two stage. System also had low refrigerant charge. Needed to adjust refrigerant charge @ condenser. Added 1lbs of R-410A to condenser : New refrigerant pressure 125psi liquid line pressure suction line pressure 475psi system is operating normally @ this time. It was explained to customer that system is not 2 stage. Customer is looking to have consultation with comfort advisor to see if he needs to added an additional unit to existing ductwork or install a ductless heat pump to specified area of the 1st floor. Office to follow up with customer. View visual findings from this job here - https://visionshare.xoi.io/?id=XA-A243-33E31D8B51454D0BBEF498C56C7BD389