This report summarizes the findings from the Ductless Heat Pump (DHP) and Heat Pump Water Heater (HPWH) message testing study conducted by ILLUME Advising LLC on behalf of the Northwest Energy Efficiency Alliance (NEEA). NEEA is a nonprofit alliance of more than 100 Northwest utilities and energy efficiency organizations working on behalf of more than 13 million energy customers to use the “market power of the region to accelerate the innovation and adoption of energy-efficient products, services and practices.”1
