My company has a commercial space that consists of 2 offices and a conference room, and through a set of doors it opens up into a ~5000 sq ft warehouse space. The warehouse space is only used for around 4 months out of the year, but people work in the offices and conference room year round.
Recently, I've been tasked with evaluating how we can make this set up more energy efficient. There are five registers that dump into the warehouse space and several more that open into the offices and conference room. The thermostat is located in the office space.
My question concerns the rather elementary idea of simply covering/sealing the registers to the warehouse space in the months that we are not occupying this space. Obviously, the system is spec'ed to move the amount of air that fits the load, I know. When I seal these registers, the flow of air out of the still-open ones increases obviously. The pressure in the system goes up.
What I want to know is what sort of damage that can cause to a blower or to an HVAC system on the whole. I want to know what you all think is the best way to make the system work for this odd arrangement with the largest space being used only at certain times in the year. It is very wasteful to cool or heat this whole space when it is not being used, but with only one system, what is the best cost-effective way to lower the utility bills while preserving the functionality of both spaces independently?
Thank you for your time. I hope you all have a great fall!