Windmill aeration from PondWorld.com is a responsible choice for aeration of large ponds. A windmill aerator is operated by winds blowing as little as 3 to 5 miles per hour. The perfect selection for remote ponds, a pond aeration windmill powers a compressor that pushes air into and through diffusers situated at the bottom of the pond. The windmill aeration systems create tiny air bubbles that lift poor quality water from the pond bottom and mix it with oxygen rich water at the surface. Windmill aeration does not require electricity so is an environmentally friendly operation. We offer windmill aerator systems from small units to telescopic units up to 25 feet high made of wood or galvanized steel.