Assertion: heat pump's system | /r/CapableOf | deliver only two units of heat
Facets:
value: for every unit of electricity
type: TRANSITIVE-OBJECT
value: at temperatures below zero
type: LOCATION
Source sentences:
text: For example, a system that delivers four units of heat for every unit of electricity at 50°F, may deliver only two units of heat for every unit of electricity at temperatures below zero.