TY - RPRT TI - ResStock Measure Documentation: Residential Variable-Speed Geothermal Heat Pump (4.4 COP, 30.9 EER) With Light Envelope Improvements AU - Brossman, Jes [National Laboratory of the Rockies, Golden, CO (United States)] (ORCID:0009000376383378) AU - White, Philip [National Laboratory of the Rockies, Golden, CO (United States)] (ORCID:0000000300919060) AU - Lou, Yingli [National Laboratory of the Rockies, Golden, CO (United States)] (ORCID:0009000541422562) PY - 2026 DO - 10.66816/tp4406558 UR - https://www.osti.gov/biblio/3685185 ID - 3685185 ER -