Recent content by dlonthedl

I don't think so... The hole is on a round protruding thing that sticks out of the pipe near the floor. I assume it's a valve, but I don't see where a cap would go. Simply covering the hole with my finger stops the whistling noise. (And I don't feel any steam coming out of it or anything.)...

I just moved to a cold-weather city; this is the first time I've ever used a radiator, and I know absolutely nothing about how they work. My radiator makes a tremendous whistling/hissing noise when it first comes on, which has been 6 AM lately in my building. Needless to say, this is very...