Review on 🔥 AUTOSAVER88 12" Electric Radiator Cooling Fan Assembly Kit - Universal Slim Engine Fan Mounting Kit, 1550 CFM, Reversible, 12V 80W (11.73" Diameter, 2.36" Depth) by Flip Shaw

The instructions on how to do this are grossly inadequate. Just like many who answer that you just need to reverse the polarity of the power supply, which means changing the direction of the blade will solve the problem. This changes direction, but the curved design of the fan blades is designed to deliver rated airflow (i.e., an effective and reasonable force perpendicular to the plane of the fan blade). If you need a pusher, do both or you'll wonder why one fan doesn't seem to be working. Aviation gives us an example. Look at the propellers of the A400 or C-130J airplanes. The blade's curved edge was designed to bite the wind, not shed it. If the fan blade is not reversed, the fan blades will move in the opposite direction of their design when the current polarity is reversed.