In general, a simple non-inverter split AC consumes less electricity compared to a window AC. Here's why:
Compressor Efficiency: Non-inverter split ACs typically have a higher compressor efficiency than window ACs. The compressor is responsible for cooling the refrigerant and plays a crucial role in the energy consumption of an air conditioning unit. Non-inverter split ACs usually have more advanced compressor technology, resulting in higher energy efficiency.
Size and Design: Window ACs are designed to fit into a window frame, which limits their size and capacity. As a result, window ACs may not be as efficient in cooling larger spaces. On the other hand, split ACs come in various sizes and can be selected based on the specific cooling requirements of the room. Properly sizing the AC to the room's dimensions can contribute to more efficient cooling and energy consumption.
Air Leakage: Window ACs, due to their installation design, may have more air leakage around the unit compared to split ACs. Air leakage can lead to heat exchange with the external environment, causing the AC to work harder to maintain the desired temperature. Split ACs, being installed more securely and having separate indoor and outdoor units, generally have fewer air leakage issues.
It's important to note that energy consumption can vary depending on factors such as the specific models, efficiency ratings, usage patterns, and maintenance practices. When purchasing an air conditioning unit, it's advisable to check the energy efficiency rating (EER or SEER) provided by the manufacturer, as higher ratings indicate greater energy efficiency.