CREATE TABLE table_44092 ("Usage" TEXT, "Class" TEXT, "Performance" TEXT, "Performance test" TEXT, "Particulate size approaching 100% retention" TEXT, "Test Standard" TEXT)

Which Performance has a Usage of hepa and a Class of h14?
SELECT "Performance" FROM table_44092 WHERE "Usage" = 'hepa' AND "Class" = 'h14'
SELECT "Performance" FROM "table_44092" WHERE "Class" = 'h14' AND "Usage" = 'hepa'