Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_44092 ( "Usage" text, "Class" text, "Performance" text, "Performance test" text, "Particulate size approaching 100% retention" text, "Test Standard" text )

### Question ###
Which Performance has a Usage of hepa and a Class of h14?

### Accurate SQL ###

SELECT "Performance" FROM table_44092 WHERE "Usage" = 'hepa' AND "Class" = 'h14'