Conducted by Red Car Analytics on behalf of NEEA, this report evaluates an expanded set of parameters for heat recovery or energy recovery ventilation (HRV/ERV) in advanced performance dedicated outside air systems (DOAS)—previously known as very high efficiency DOAS. It analyzes the impact of these expanded parameters on energy efficiency and first-cost effectiveness.

Report goals included:

1. Analyzing the energy impacts of using lower or higher efficiency parameters in an HRV/ERV configuration compared to standard rooftop heat pump units and a basic efficiency HRV/ERV as defined by the Washington State Energy Code (WSEC),
2. Identifying the first costs, net present value, and the payback period of lower and higher efficiency HRV/ERV configurations compared to standard rooftop heat pump units, and
3. Outlining the additional benefits provided by each parameter and which configurations provide the best benefits.