Customer explained that system would not heat or cool, only blowing room temp air. Upon arrival found system tripped on low pressure lockout. Connected gauges and found standing pressure is 24psig. System is nearly flat on r410a refrigerant. System will need to be recharged and have electronic leak search performed to determine cause of leak. Also found that inside of air handler is coated with a layer of dust. Evaporator coil and blower assembly will need to be chemically cleaned. System was installed less than a year ago. Customer is going to contact installing company and home warranty company to see if repairs are covered under warranty. Highly advise that customer join Comfort Advantage Club to keep up with maintenance, satisfy manufacturer warranty requirements, receive 15% off of repairs, avoid service fees during normal business hours and receive priority service.