How can energy recovery ventilators (ERV) benefit an HVAC system?

Energy recovery ventilators (ERVs) play a significant role in HVAC systems by transferring energy between incoming and outgoing air. This process is essential for enhancing the overall efficiency of air handling in buildings. ERVs work by capturing the heat and moisture from the outgoing stale air and transferring it to the incoming fresh air. This ensures that the indoor climate remains comfortable while reducing the load on heating and cooling systems.

For instance, in winter, the warm, moist air exiting the building can preheat the incoming cold, dry air, thereby reducing the energy required for heating. Conversely, in the summer, ERVs help cool and dehumidify the incoming air by transferring some of the heat and moisture to the outgoing air. This dual capability not only maintains indoor air quality but also promotes energy savings and enhances the comfort level for occupants.

The other choices do not accurately reflect the primary function of ERVs. Increasing humidity levels might be a side effect in some situations, but it is not a direct benefit that ERVs aim to provide. Cooling the air directly is a feature more closely associated with air conditioning systems rather than the energy recovery process of ERVs. Lastly, while filters are important components in HVAC systems for maintaining air quality, ERVs do not operate without