What organization sets the duct cleaning standards?
A. EPA 4 Votes 8.0%
B. NIOSH 4 Votes 8.0%
C. IAQA 7 Votes 14.0%
D. NADCA 32 Votes 64.0%
E. AEE 3 Votes 6.0%
Total Votes 50 Votes  

Done
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