$3)(6$ points total$)$ In Problem $4$ of HW$7$ you were asked to calculate the HVAC energy consumption of a building using either eQUEST or EnergyPlus. Starting from that same model, implement one approach that should lead to HVAC energy savings. This approach can be a more efficient air conditioner or heat pump, more efficient windows, or whatever you like. With this one approach implemented determine

a$.(4$ points$)$ New monthly HVAC energy consumption for all $12$ months, and compute the $\backslash (\backslash \%\backslash )$ savings relative to your original calculation

b$.(2$ points$)$ Annual reduction in $\backslash (\backslash$mathrm$\{$CO$\}\_\{2\}\backslash )$ emissions resulting from the reduced HVAC energy consumption