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winkosmosis · 07-18-2009, 06:17 AM

HVAC cowl air intake is a good thing. Fresh air for the AC, and also probably helps the HVAC maintain positive pressure. You need positive pressure to keep the air clean and reduce the chance of getting stuff like carbon monoxide coming in

07-18-2009, 06:17 AM	#5 (permalink)
winkosmosis Master EcoModder Join Date: Jan 2009 Location: Maui, Hawaii Posts: 813 Thanks: 5 Thanked 34 Times in 26 Posts	HVAC cowl air intake is a good thing. Fresh air for the AC, and also probably helps the HVAC maintain positive pressure. You need positive pressure to keep the air clean and reduce the chance of getting stuff like carbon monoxide coming in