Re: Shooting a conference room presentation: Overcoming HVAC room noise and light from presenter's projector

[Roderick Lavallee] "the client never realized how loud an HVAC system was until I pointed it out to them in the head phones"

They never do. Some of the best advice here is:

[Chris Tompkins] "More dialog up front."

This way the obstacles can become more of their problem to accept or fix rather than being seen as your mistake.