Reversible Vent Fan

[freddmc]

I am looking at putting in a Fantastic vent fan. Is the option to get a reversible motor worth while?
Thinking of it in a practical sense the fan blades must be oriented to move air in a certain direction. By reversing the motor it seems to me it would be significantly less efficient. I wouldn't think that the blade pitch would be changeable.

Regards
Fred.

[MDKMDK]

My Maxx Air only expels air, as it's uni-directional. I wish it had a reversible motor, as it is sometimes useful to be able to draw cooler or warmer air from outside, in.

[Lwiddis]

Technical discussion aside, don’t buy and install a vent fan that doesn’t pull air in and exhaust air out as you choose.