Humidification module for an air treatment apparatus

An air treatment apparatus comprising:

• a ventilating unit comprising:
• a motor;
• and
• a ventilator, said ventilating unit configured to:
• generate an airflow through said air treatment apparatus;
• an air purification module comprising:
• at least one filter, said air purification module configured to:
• purify air within said airflow;
• a main housing comprising:
• a housing flow outlet, wherein said purified air within said airflow passes through said housing flow outlet;
• a humidification attachment module comprising:
• an air flow inlet configured to:
• receive said purified air from said housing flow outlet;
• and
• a housing portion comprising:
• a first flow outlet, wherein said purified air exits said air treatment apparatus;
• and
• an outlet grille configured to:
• cover one of:
• said housing flow outlet and said first flow outlet, wherein the humidification attachment module and the outlet grille can interchangeably cover said housing flow outlet, wherein said air treatment apparatus is configured to:
• adopt one of:
• an augmented configuration, wherein the humidification attachment module covers the housing flow outlet and said outlet grille covers the first flow outlet, and
• a non-augmented configuration, wherein the outlet grille covers the housing flow outlet.