I would refer to mandate of < 65% R.H. as a HAZARD WARNING
Originally Posted by Florida Joy
and definitely not term it as ASHRAE guidance.
As far as R.H.% comfort level is concerned, > 50% is QUITE NOTICABLE as ANNOYING / DISLIKED to the Majority of people.
I would go as far as saying > 55% R.H. indicates that A/C equipment is truly disfunctional IMO.
Hotel/Motel rooms are a prime example of POOR humidity control.
It's Not Rocket Science, But It is SCIENCE
with "Some Art". ___ ___ K EEP I T S IMPLE & S INCERE
Define the Building Envelope and Perform a Detailed Load Calc: It's ALL About Windows and Make-up Air Requirements. Know Your Equipment Capabilities