After having my roofing shingles meet a premature death due to excessive heat build up I installed a ridge vent on my roof. I have determined that I am in need of additional vents under the eaves. One of the locations I intended to install a vent would place it about 5 feet directly above the outside compressor of my central air conditioning unit. I initially thought that this would be a good way to get additional air flow into the attic whenever the a/c unit turned on in hot weather. Now, I am having second thoughts wondering if the air flow from the unit might contain too much moisture or cause some other problem. I emailed GAF for their advice but they sidestepped the issue entirely. What do you think?
The moisture will not be any different at the compressor fan than elsewhere outside. On the other hand, heat is another story. Being hotter than the ambient air can't be an asset even if it is moving at a higher velocity. I recommend omitting vents above the compressor. If you want to move the attic air, add an attic exhaust fan.
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