A quick question, I have a customer who has a single zone CV system for a small office bldg. 1 stat heat pmp system 7.5 ton unit conference room when in use freezes out the other offices I recomend installing seperate duct heaters with individual tstats to control ( not over efficiant but simple). The customer has sugested adding zone dampers w/bypass but still see this as a problem if there is a call for heat while in conference? any ideas and my budget is light so I'm not looking to go full fledge DDC for such a small system:anyone: