Odd Honeywell transformer

General Discussion
1

Hi, We have lived in a house built in 1957 and we moved in 8 years ago. In our crawlspace there is a Honeywell transformer that has been buzzing as long as I can remember. It doesn’t have anything connected on the output terminals but it is just constantly buzzing as it ages. It is mounted next to our furnace. I was just wondering if anyone might have any idea what it may have been used for. I have attached a video. Not necessarily looking for how to stop it, just looking if anyone knows what it may have been used for.

1 Like
2

The only use for those kinds of transformers that I’ve seen is for doorbell systems.

3

Since it’s mounted by your furnace and it’s a Honeywell brand it was probably related to an older furnace, damper or thermostat. There is nothing on the output terminals so it should be fine to discoinnect it.