Termofan energy recovery units are designed to have high efficiency by using rotary type heat exchangers. The efficiency of NV-ER units is about 80% and this value is higher than the efficiency of TF-HR units(aluminum plate heat exchangers) at least 25%. By the way, the supply air temperature will be too close to the room temperature and it would not be necessary to use additional heater.
Rotary type heat exchangers transfer the humudity as well as the heat. By the way, humudity will be transferred to the supply air from the fresh air in winter. And it is transferred to the exhaust air in the summer time. It helps to keep the humudity level close to the comfort conditions.