You can tell if your heating system needs maintenance by looking for these signs, though annual maintenance before the heating season is always recommended:
Unusual Noises: Banging, rattling, or other strange sounds indicate potential issues.
Inconsistent Heating: Uneven temperatures or difficulty reaching the desired warmth.
Increased Energy Bills: A sudden spike in energy costs without increased usage.
Frequent Cycling: The system turns on and off more frequently than usual.
Poor Air Quality: Dust, musty odors, or increased allergens suggest the system needs cleaning or inspection.