What rooms or loads require AFCI protection?
Yes, you need AFCI protection

As of the 2017 NEC, AFCI protection has been extended to all 15 and 20A, 120V branch circuit outlets in all dwelling unit locations.  This includes dedicated appliances such as furnaces and dishwashers, and even smoke detector circuits.  The only exception present is for a fire alarm control panel for a protected-premises fire alarm system (i.e. with separate detectors, "brain box"/fire alarm control panel, and sounders) under NFPA 72.