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1 inch hole in hot air return duct?
Probably a hole drilled when someone had the ducts cleaned. Look at other
ducts and see if there isn't a similar hole with a small plug in them as well. They sometimes drill a hole and run a rod with a multi-sided nozzle on one end and connected to an air compressor that blows the dirt and dust lose. Their big vacuum then sucks the dust out, probably thru a hose that was attached to a larger opening cut in the plenum. All these holes should be plugged - but the plug may have fallen out of the hole you see in your duct. "z" wrote in message ... i just noticed, a hole about an inch in diameter in the bottom of the hot air return ducting in the basement, just before it enters the plenum. not sure where the duct is coming from, presumably from the return register upstairs in line with the duct where it vanishes into the finished part of the basement. no return register in the basement itself, although there is one outlet which is closed pretty much all the time. it's an oil furnace with central air also, if that makes a difference. is this hole there for a purpose? prevent small-sized floods from flowing down the duct into the plenum? suck up carbon monoxide from the oil burner to circulate around the bedrooms? does it make any sense to plug it? |
#2
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1 inch hole in hot air return duct?
On Feb 2, 10:25*pm, "Mark" wrote:
Probably a hole drilled when someone had the ducts cleaned. *Look at other ducts and see if there isn't a similar hole with a small plug in them as well. *They sometimes drill a hole and run a rod *with a multi-sided nozzle on one end and connected to an air compressor that blows the dirt and dust lose. *Their big vacuum then sucks the dust out, probably thru a hose that was attached to a larger opening cut in the plenum. *All these holes should be plugged - but the plug may have fallen out of the hole you see in your duct. guess i'll just have to use a champagne bottle cork. now what am i going to do with all this champagne... |
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