Help me identify this device


#1

This device runs for 7-8 minutes about every 20 minutes (give or take, it’s not on a schedule).
I’ve turned off my two heat pumps so it’s not them (even though they have not been picked up yet).
I do have two refrigerators (one was picked up) but the fact that it runs so often leads me to think it’s not fridge related.
I have gas heat in the house.
Any ideas? Thanks.