Photo credit: TheDrPepper
Q: Only seen a couple of these around Chicago. Is this a code compliant exhaust cap? Was told it was because “rain kept blowing into the cap and dripping down the vent pipes.”
It is for natural gas furnaces (second floor) that connects to an upper units venting (3rd floor) and then out.
A: Assuming it’s venting a category 1 appliance, no. At no point should a natural draft vent system slope downward. If the cap is leaking, get one that doesn’t. NFPA 54 section 12.7.2 -Gas Vent Termination – Tony3696
NFPA 54 section 12.7.2 -Gas Vent Termination
Page 229 has a pic of what is acceptable. It does not mention a U bend. – 33445delray
aredditusername2 asks: What is this light in my bathroom vent? Humidity sensor?
Answer (from Iforgatmyusername): It’s the humidity sensor. No it’s not a camera.
Humidity Sensor Operations for Hampton Bay 80 CFM No Cut Ceiling Humidity Sensing Bath Fan
1 Humidity sensing mode. Move the wall on/off switch to the “ON” position. The LED indicator light in the fan is BLUE. The fan will automatically go on when the humidity level in the room goes above 60%.
2 Full speed mode. Cycle the wall on/off switch to the “OFF” position, then back to the “ON” position. The LED indicator light in the fan is AMBER.
3 Fan off. Move the wall on/off switch to the “OFF” position