Tech found downstairs zone system not heating due to a failed 1/3 hp 1075 rpm blower motor. System is 12 years old. Indoor coil is very rusty. Leak searched indoor coil and confirmed it leaking refrigerant. Picked up leak location in upper left corner of coil on low, medium, and high sensitivity. Tech recommends getting quote on system replacement due to age, cost of repairs with blower and refrigerant leak, and lack of warranty. Field Supervisor is scheduled for tomorrow at 3pm. Customer opted to get system running with new blower today. Tech let her know that up to $750 of repair cost can go towards new system within 30 days. Tech tested system with new blower motor. System is back operating correctly in each mode. System holds about 6 lbs of R410a. Tech estimates system is under 1 lb low on refrigerant. Would need nice warm day to set the subcooling. Tech recommends system replacement due to age and coil replacement cost.