Bathroom Fan Timers are Now Required by Code!

OK, so maybe you already knew that bathroom exhaust fan timers for reducing moisture are required by code.

But we didn’t, which is why we were both a little spooked when the hallway bathroom fan came on all by itself on our first evening in our new house. It has done that a few times, even though we barely use that bathroom. It’s the only bathroom in the house which has a fan timer. I don’t think it’s supposed to come on by itself, so it’s probably haunted.

It’s made by Intermatic and Sena finally flagged down an electrician working in another house under construction on our street who found an instruction manual for our model. He told her it was installed because it’s code.

Imagine if every bathroom in your house had a bathroom fan timer in it. I’m sure some people love the idea. I also realize some people might think it’s crass of me to admit I would love to disable it.

I don’t think I can disable it. The initial setup instructions alone contain 28 steps. Then you get to actually program it, which gets you to 41 steps. If you ever have to edit the programming, you’ll need to develop a serious drinking problem. You have to scan a QR code to get your latitude and longitude. That’s not a joke.

The unit runs partly on batteries. I think the model we have is the ST01 and it takes a single CR2 battery. A newer model takes a different kind of battery and you need two of them. They control the clicking noise and the time and date. You also need strong fingernails or a tiny flat head screw driver to open the battery compartment. See the video below.

If you figure out how to disable it, please comment. Otherwise, I guess you could call the 800 number in the manual to access what might be an automated recorded answering algorithm which ends up recommending mayonnaise or Miracle Whip for your Braunschweiger sandwich.

ADDENDUM 9/10/2024: I pressed the MODE button once and the timer went from AUTO to MAN (manual). We haven’t had it turn on automatically so far after that.