Assertion: energy recovery ventilation system | /r/CapableOf | reduce cost
Facets:
value: by transferring heat
type: MANNER
value: in the winter
type: TEMPORAL
Source sentences:
text: They reduce the costs of heating ventilated air in the winter by transferring heat from the warm inside air being exhausted to the fresh (but cold) supply air.
text: They reduce the costs of heating ventilated air in the winter by transferring heat from the warm inside exhaust air to the fresh (but cold) outside supply air.