[sw1015]

Thanks for HZ & HS's prompt reply!!!

I have been told that a new computerized heat sensor system installed in the co-op building recently ~ it evaluates the temperature of select apartments and adjusts the release of heat throughout the buildings based on an aggregate of the interior temperature readings.

I have not moved in due to this on & off hassles. Per my visits, I know the heat is NOT on all the time, normally every 2-3 hours, heat will travel to the apt. via the steam pipe.

I have put some white paper towel right below the radiator. Yesterday, I stopped by and saw more water stains with black particles on it. (see attachment). Can you tell what are those black particles are?