GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

Regarding Panasonic humidity/motion sensing fans

nedjinski | Posted in General Questions on

As the panasonic literature states – the options for controlling their humidity / motion sensing fans is : Motion on/Motion off – Motion on/Humidity off – Humidity on/Humidity off with a selectable timer.
I think this ties the two operations together on the same timer – Meaning, if you set the timer to 30 minutes, the fan stays on for 30 minutes after motion is no longer detected or a level of humidity is reached, etc.
This seems limiting and a waste of energy if the fan stays on for more time than needed.
Is there a fan unit out there that would have separate timers for the two separate operations? Ideally the motion activated fan would only stay on for a few minutes whereas the humidity activated fan would stay on as long as necessary until the desired humidity level had been reached.
Any fans like that out there?

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.


  1. user-2310254 | | #1

    Panasonic makes great bath fans. Have you contacted technical support to see if any of the models can be configured to operate in the way you want?

    That said, the newer Panasonic fans have very efficient motors. One of these units is not likely to be much of energy hog even with a 30 minute run time.

Log in or create an account to post an answer.


Recent Questions and Replies

  • |
  • |
  • |
  • |