Kind of business reported,Share of 2022 business done (%),Counted as HVAC in our estimate
"Heating, ventilation and air-conditioning contractor (8220)",40.9,Yes (core and broad)
Refrigeration contractor (8225),2.6,Yes (core and broad)
Mechanical contractor (8223),18.3,Broad only
Plumbing contractor (8224),25.2,No
"Building and lawn sprinkler contractors (8221, 8222)",4.4,No
All other kinds of business,8.6,No
HVAC core share (8220 + 8225),43.6,Core estimate
HVAC broad share (8220 + 8225 + 8223),61.8,Broad estimate