My HVAC A/C is freezing after sundown every day
A low charge can cause evaporator freezing. If your cap was bad that usually indicates an older system. Micro leaks have caught up, probably R22 and it is getting expensive. A 5 ton system will take 4-6 lbs normally to be fully charged but may give you another 5 trouble free years. In most cases the icing will get worse. It could also be a throttle valve that is sticking but it seems more likely low Refrigerant.