mismatching evaporator coil and condenser coil size

When you go to some sites shopping for ac system, you often see some of the recommendations combine condenser, evaporator coil and furnace altogether, and most importantly in each of the combination, the recommended evaporator coil size will be bigger than the condenser unit. For example, a 3.5 ton condenser unit most likely comes with a recommended 4 to 5 ton evaporator coil. This is done on purpose so that the whole system will be very efficient. So the rule of thumb is that the evaporator coil size should be slightly bigger than the size of the condenser unit.

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