single package vertical heat pump
Defined in 1 dictionary — U.S. Code
United States Code
42 U.S.C. § 6311 — for purposes of this part (6 versions over time)
The term “single package vertical heat pump” means a single package vertical air conditioner that—
(A) uses reverse cycle refrigeration as its primary heat source; and
(B) may include secondary supplemental heating by means of electrical resistance, steam, hot water, or gas.