Radiator Survey

[HairyDave]

Happy New Year. I was posting for the benefit of the unknowing. Many times, I have heard people say, 'Turn the fan around to reverse the flow.' Doh!

[martinclan56]

A word of warning about reversing the direction of fan rotation.
Yes you can normally change direction simply by swapping the +ve and -ve feed to the motor. Assuming it's a simple DC motor.
But many modern fans, particularly those with curved blades, only work efficiently in one diection. Yes they will work in reverse but nowhere near as well.