A natural heater has no blower fan and does not connect to an A/C power source. A natural draft type tankless heater takes it's "intake" combustion air from inside the room in which the heater is mounted. It then uses a natural draft to pull the exhaust out through a flue pipe exhaust.
Unit of Measure:
Commercial, Residential, Multifamily
Term ID: f50b3468-69ec-4658-918e-7caeb528b356