TY - RPRT TI - A side-by-side energy use comparison of a variable-speed small duct high velocity and two-stage conventional ducted heat pump in a net-zero energy home AU - Payne, W Vance AU - Dougherty, Brian P PY - 2020 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST TN 2101 DO - 10.6028/NIST.TN.2101 ER -