This device should be inspected and cleaned as necessary, which will vary by application and environment. *** Assumptions: $3/cfm energy recovery cost $650/ton avoided cooling equipment cost 75.6% effective energy wheel 12 hrs/day 5 days/week operationĮnergy Wheel: The most important component in the ERV is the energy wheel. ** Average electricity cost (dollars per kWh) in March of 2007 (source: Energy Information Administration) * Average gas price (dollars per therm) per region in the first six months of 2007 (source: Energy Information Administration) In most parts of the United States, the payback is less than 2 years!Įquipment Reduction Using Energy Recovery on 3000 cfm Outdoor Air When you combine the energy savings from summer and winter operation, they lead to a very fast payback period. In the summer, the energy recovery unit removes heat and moisture out of the outdoor air, but in the winter, heat and moisture are added back into the fresh airstream. The energy recovery unit provides energy savings throughout the year. Outdoor air can be very expensive to heat and cool, but the ERV unit can provide an economical approach to delivering outdoor air into a building. Introducing fresh, outdoor air to a building is a key component to sustaining excellent indoor air quality.
