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diesel_john · 05-25-2011, 09:12 PM

HVAC techs use a concentrated solution to clean coils. The smoke actually condenses on coils to form a brown layer. I believe it was called Acti-Klean.

05-25-2011, 09:12 PM	#18 (permalink)
diesel_john MP$ Join Date: Jan 2008 Location: SW Ohio Posts: 595 Thanks: 5 Thanked 19 Times in 14 Posts	HVAC techs use a concentrated solution to clean coils. The smoke actually condenses on coils to form a brown layer. I believe it was called Acti-Klean.