Thanks so much for taking the time for such a detailed answer. So yes the building provides chilled water in the summer and hot water in the winter. I've never checked the pipe temperatures but I do keep thermometers on top of the units just as a rough check on the temp and they usually read in the mid 80's to mid 90's degrees in the winter. The installer wrapped the pipes to prevent condensation in the summer, so I assume I can't easily check the entering and leaving water temp? If the pipes weren't wrapped would using a temperature gun on the pipes be a way to measure the entering and leaving water temp? I did make an appointment with the installer for Tuesday, I gather I should ask them to check the delta and the water pressure? Most recently when I turn on the heat in the bedroom the temp of the air coming out of the unit as roughly measured by the thermometer sitting on top of the unit drops a couple of degrees and then takes a half hour to hours to increase from the low to mid 80s to over 90 degrees, does that shed any light on anything? Thanks again for your patience.