I'd be tempted to call a HVAC company out. It's likely to need the coils
cleaned, more freon added, and so on.
Many HVAC companies can cut and bend pieces of sheet metal to size.
Personally, plywood might be easier to cut to shape. But, please make it
marine or exterior plywood, cause it sounds like it's near the evaporator,
and will get wet.
I've been toying with the idea of making a water cooled AC for my trailer.
Seeing as how it can be 93F out, and the water coming in much cooler than
Christopher A. Young
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