Great choice for a Re-Blog, Jim.
I understand IAQ, but was not aware of HRV, until I read the Blog.
TYVM!
Jim, Thanks for re-posting this extremely important blog by Charles Buell. So many people have no idea. It makes our job a little easier when the public has some clue as to what we are talking about.
Jim, thanks for the reblog---and welcome to ActiveRain!
Great choice for a Re-Blog, Jim.
I understand IAQ, but was not aware of HRV, until I read the Blog.
TYVM!