Incorrect, the engine exhaust noise far overwhelms the fan blade air. But sure all sound must travel thru the air. Smarter blade design would cut some noise down as well. And remember the engines are usually most efficient at some high RPM. That’s why hybrids rev up their engine even when not moving the car…just being efficient.
They still make some noise but its only when you get very close to the blower because the higher pitched noise is more attenuated by the atmosphere and environment.
I thought the noise was mainly due to the air, so I don’t really see how switching to electric ones would help
Incorrect, the engine exhaust noise far overwhelms the fan blade air. But sure all sound must travel thru the air. Smarter blade design would cut some noise down as well. And remember the engines are usually most efficient at some high RPM. That’s why hybrids rev up their engine even when not moving the car…just being efficient.
Never heard an electric one for comparison but alright
They still make some noise but its only when you get very close to the blower because the higher pitched noise is more attenuated by the atmosphere and environment.