Measure (any use),2012 CBECS,2018 CBECS
"Packaged AC units, % of buildings",34.4,43.3
"Packaged AC units, % of floorspace",51.8,58.6
"Central chillers, % of floorspace",19.6,18.5
"Heat pumps for cooling, % of buildings",12.5,8.3
"Packaged heating units, % of buildings",50.4,37.0
"Furnaces, % of buildings",13.6,27.4
"Boilers, % of floorspace",25.8,29.7