Beginner Questions (Ask Them Here!)

[CigarNut]

Originally Posted by Fredo456

I keep reading about hygrometers having to be recalibrated. Some recommend to recalibrate after a sudden change in Rh.
Isn't the point of this tool to accurately indicate the rh of a given space? How accurate is it really, if one can't trust it and has to recalibrate it so often?

Thanks.

Like all things that run on batteries they wear out. Also, most digital hygrometers rely on the battery charge to maintain their calibration. As the batteries wear the calibration changes a little.

Also, it's not like it is a huge problem to check your hygrometer a few times a year.