Pianotech

Hello, I recently moved my personal pianos into a new studio space- a new building on my property. I had Dampp Chasers installed in both pianos which I removed before the move to the new space. I have been able to keep the new space very easily between 38-45% humidity, and most of the time it sits right between these numbers. The systems are getting a little bit old and I'm trying to decide if it's actually worth installing them when my room stays as consistent as it does. In your experience, is there a point where the hassle or unlikely but possible system malfunction is worth the little bit better humidity stability? I'm inclined to leave them off.

Thanks!