I'm running an Aqua Heat Pump and it is noisy. Between the the heat pump, the filter, and my house AC condensers I'm driving myself nuts (and probaby the neighbors). Is it ok to enclose the heat pump in some kind of small shed type structure? The back of the unit is approx. 1.5' from the wooden yard fence so I'm thinking of building a 3-sided structure and leaving that 1.5' space for air flow. Any recommendations for the clearance on the top?

Thanks