National Fire Protection Association (NFPA) 90A - 02, Standard for the Installation of Air-Conditioning and Ventilating Systems, makes which of the following statements regarding cleaning?
A.
Cleaning should be undertaken yearly
B.
Cleaning should never be undertaken
C.
Cleaning should be undertaken once every five years or sooner
D.
Cleaning should be undertaken whenever an inspection indicates the need
A voting comment increases the vote count for the chosen answer by one.
Upvoting a comment with a selected answer will also increase the vote count towards that answer by one.
So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.
[Removed]
8 months, 3 weeks ago