No heat from ONE vent !

[Lynch]

20 vents in house work fine- the one in ground floor bathroom has nothing ! I took off the vent (ceiling) and just stuck my hand in but thats about all I could do. Getting into the ceiling crawl space is not easy, but is that what has to be done ?? Could it be loose/disconnected somewhere ?? Know nothing about HVAC so if I'm supposed to check something, please be specific on what, where, and how !! Thanks guys

[Ed Imeduc]

Hard to say just what here. Is there a damper in this pipe back by the trunk line or main duct? AS you said pipe is apart. Sometimes the air will pass a take off for a run.and then you have to put whats called a robber up in that takeoff. So first look for a damper in the pipe would look like a small metal handle on the pipe. Can try and close most of the registers in the home just to see if you get air then , dont let them that way. Turn the fan to fan on thats like AC speed does it have more air then?

ED ;)

[scottg]

Depending on the charactoristics of the bathroom you may need very little air in there.

Say that the bathroom is in the middle of the house and it just has a toilet and a sink in it, and the size of the room was 8' X 4' with 8' ceiling. I would guess it would take only 10 cubic feet of air per minuite. With that comming out of a 10" X 4" supply register it would only throw air for about 2' from the vent if that.