Assertion: conventional heat pump | /r/HasProperty | auxiliary heating
Facets:
value: often
type: TEMPORAL
value: from lp
type: OTHER
value: from natural gas
type: OTHER
Source sentences:
text: Lower temperatures may cause a heat pump to operate below the efficiency of a resistance heater, so conventional heat pumps often include heater coils or auxiliary heating from LP or natural gas to prevent low efficiency operation of the refrigeration cycle.