The answer to 'why is my ductless system high energy bills' is that there are several common causes, including improper sizing, lack of maintenance, and inefficient components. Ductless systems that are too large for the space will short-cycle and use more energy than necessary. Dirty air filters, coils, and other components can also reduce efficiency and drive up costs. Additionally, older or low-quality ductless units may simply be less energy-efficient than newer models.
If you're experiencing high energy bills with your ductless system, it's best to have a professional HVAC technician inspect the system and diagnose the issue. They can check the sizing, identify any maintenance needs, and recommend solutions to improve efficiency and lower your energy costs.