An ERV system is a ventilation solution that efficiently recovers heat energy from exhausted used air and uses it to preheat or pre-cool the fresh air supplied to the building. This reduces the energy demand of heating and cooling systems while ensuring fresh air in the rooms.
How does the ERV system work?
Air exchange: The ERV system simultaneously introduces fresh outside air and removes used air from the rooms.
Heat recovery: The heat content of the exhaust air (warm in winter, cold in summer) is transferred to the incoming air through a heat exchanger . In winter, the cold outside air is warmed by the outgoing warm air, while in summer, the warm outside air is cooled by the outgoing cold air.
Humidity control: ERV systems can recover not only heat energy but also humidity, contributing to a comfortable room climate. In winter, it prevents the room from becoming too dry, while in summer it reduces excessive humidity.
Advantages of ERV system
Energy efficiency: Heat energy recovery reduces the energy demand of heating and cooling systems, resulting in significant cost savings.
Providing fresh air: The ERV system continuously provides fresh air to the rooms without causing significant heat loss or energy waste.
Humidity control: Helps maintain optimal humidity , which improves room comfort and the health of those who occupy it.
Sustainability: By reducing energy consumption, ERV systems offer an environmentally friendly solution, reducing the building's carbon footprint.
Flexibility: ERV systems can be widely used in everything from residential buildings to office buildings to industrial facilities.
ERV vs. HRV (Heat Recovery Ventilation) – What is the difference?
| Property | ERV (Energy Recovery Ventilation) | HRV (Heat Recovery Ventilation) |
|---|---|---|
| Heat energy recovery | Yes | Yes |
| Humidity recovery | Yes (also controls humidity) | No (only recovers thermal energy) |
| Application | Places that require particularly high humidity control | Mainly in dry climates or for simple heat recovery |
| Winter comfort | Prevents rooms from drying out | Less effective at humidity control |
Summary
The ERV system is an innovative and energy-efficient ventilation solution that provides fresh air, heat recovery and humidity control. ERV systems are particularly beneficial in locations where reducing energy consumption and maintaining a comfortable indoor environment are of paramount importance. With regular maintenance and proper design, ERV offers long-term sustainability and cost savings in both residential and commercial applications.