When entering room reservations in the Rock, make sure you don’t schedule events for long periods just to hold the space. Events2HVAC will run the HVAC during that time in occupied mode and waste energy while the room may not be occupied.
The same logic goes for entering the setup and clean up times for a reservation. If you are triggering your HVAC control on the setup/teardown period, you should not extend the setup time just to hold the room.
Currently there is not a mechanism to exclude certain types of events from flowing into Events2HVAC when using Rock RMS and Room Scheduling Plugin unless it is in an unwanted approval state.