Assertion: heat pump | /r/CapableOf | perform at temperature
Facets:
value: in 1971
type: TEMPORAL
Source sentences:
text: If you need your heat pump to perform at these temperatures, ask your heat pump supplier for advice.
text: In 1971 when Spies wrote that note for the Small Homes Council, few heat pumps worked at temperatures that low, Also that this was in 1971, newer equipment is capable of efficient heat extraction from colder air.
text: If you need your heat pump to perform at these temperatures, ask your heat pump supplier for advice.