Age of central AC system,Homes (million),"Share of central AC homes, %","RSE of count, %"
Less than 2 years,10.76,13.0,2.7
2 to 4 years,13.49,16.3,2.4
5 to 9 years,22.03,26.6,1.6
10 to 14 years,17.12,20.7,2.2
15 to 19 years,9.83,11.9,3.0
20 years or more,9.47,11.5,3.2
All central AC homes (main equipment),82.69,100.0,0.5