In 2012, Ben Larson & Ecotope led a large, region-wide effort to validate the energy savings estimates of heat pump water heaters (HPWH). The HPWH Savings Validation study consisted of directly monitoring HPWHs in 50 sites, integrating the work of two previous field studies, validating the SEEM energy simulation of HPWH interactions with houses and creating an active unit energy savings (UES) measure for the Regional Technical Forum. Read the full report here.
