[Paladin2]

I recognize those laws of physics (humidity is typically lower at most western USA locations), so what might me the size of the effect on HD life?

I'm sure some Denver located organizations know.

[dhs12345]

Thinking maybe that humidity might affect cooling — evaporation. Higher humidity means less evaporation. And the moisture takes on the temperature of the environment making cooling less efficient.

However, aren’t they referring to the change in humidity versus the nominal humidity?