My "ventilated enclosure" is a 6'x8' pole barn construction shed, with forced air cooling (from the North side of the shed) for the compressor as well as storage for fishing gear, canoe paddles, and more. The noise outside is much reduced compared to a naked compressor (and more so since I have insulated the shed. If you might want an "oarhouse" next to your pond, it is an option to consider.