I'm involved in the renovation of a retail building into a medical office building in Northern Indiana and the mechanical engineer is telling me I need to have hot gas bypass reheat feature on the RTU's for humidity control.
I manage and maintain a lot of office and retail spaces and I can't recall one with this type of unit or having a problem with humidity control in any of them.
Is this something that is really needed and are there alternatives to this option on the RTU's?
Also, it's being suggested that I install an additional RTU for heat only to warm the 10 foot high return air plenum in the winter to keep cool air from falling back into the spaces through the return air grates. Again, I don't have this issue in any of my other spaces. Is it necessary?