Furnace
Ignition, flame proving, burners, venting, blower, temperature limits, controls and accessible combustion-related condition.
Furnace maintenance should go deeper when the heating equipment needs its own landing page.
Central AC
Indoor and outdoor coils, drainage, blower airflow, electrical components, temperatures, controls and outdoor clearances.
AC maintenance supports homeowners looking for a cooling-only tune-up.
Heat pump
Heating and cooling modes, outdoor coil, defrost-related behavior, reversing controls, backup heat, airflow and drainage.
Year-round use means the maintenance schedule should reflect total run time.
Ductless mini-split
Every indoor head, filter, coil, blower and drain plus shared outdoor equipment, communication and zone response.
Mini-split maintenance covers the full multi-zone checklist.