Energy Recovery Ventilation (ERV) is the energy recovery process of exchanging the energy contained in normally exhausted building or space air and using it to treat the incoming outdoor ventilation air in residential and commercial HVAC systems. The benefit of using energy recovery is the ability to meet the ASHRAE ventilation & energy standards, while improving indoor air quality, and reducing total HVAC equipment capacity.
| Energy Recovery Devices | Type of Transfer |
| Rotary Enthalpy Wheel | Total & Sensible |
| Fixed Plate | Total & Sensible |
| Heat Pipe | Sensible |
| Run Around Loop | Sensible |
