This study aims to evaluate the performance of a Small Duct High Velocity (SDHV) heat pump relative to a Conventionally-Ducted Heat Pump (CDHP) using one-year of detailed data from the two-story Net-Zero Energy Residential Test Facility (NZERTF) on the campus of the National Institute of Standards and Technology (NIST). The NZERTF is a single-family home that serves as a laboratory with simulated occupancy and scheduled internal loads. During the analysis period, the SDHV and the CDHP were alternately operated every other week in order to compare the two systems under similar weather conditions. The preliminary analysis indicated that the SDHV system might not always provide thermal comfort comparable with the CDHP. Potential reasons are lower supply airflow rates from the SDHV during the heating season in this low-load house, and a tight thermostat deadband range for the CDHP, which resulted in comparatively more frequent on-cycles.