With summer approaching, the Consumer Council, in collaboration with the Electrical and Mechanical Services Department, tested the basic functions of 13 inverte
With summer approaching, the Consumer Council, in collaboration with the Electrical and Mechanical Services Department, tested the basic functions of 13 inverter split-type air conditioners, commonly known as "1.5 horsepower" models, including cooling capacity, cooling energy efficiency, quietness, safety, and ease of use. The test results showed that although all 13 "1.5 horsepower" inverter split-type air conditioners were rated as Level 1 energy efficiency labels, there were significant differences in their energy efficiency. 1. Energy Efficiency Performance: The Key to Inverter Technology and CSPF The report indicated that all samples met the Level 1 standard of the mandatory energy efficiency label, but there were still significant differences in energy efficiency. CSPF Value Index: The higher the CSPF (Cooling Season Performance Factor), the more energy-efficient the product. Mitsubishi Heavy Industries topped the list with a score of 7.510. Electricity Cost Difference: Tests revealed an annual electricity cost difference of up to $343 between samples (from the most energy-efficient at $679 to the most energy-consuming at $1,022), a significant expense over long-term use. 2. Cooling Efficiency and Accuracy Cooling and Heating Performance: Most cooling and heating air conditioners exceeded their claimed cooling capacity. The best performer was the Daikin, which measured approximately 6.8% higher cooling capacity than claimed. Net Cooling Performance: In comparison, the net cooling capacity of the samples showed more consistent performance, with the Carrier demonstrating the most stable performance. 3. User Comfort: Quietness and Airflow The comfort of an air conditioner depends on operating noise and fan speed adjustment. Quietness: In indoor environments, Mitsubishi Electric, Mitsubishi Heavy Industries, and Samsung performed best, receiving a score of 4.5, suitable for users sensitive to noise. Airflow Control: The airflow range varied significantly among the samples. LG had the highest airflow and a 71% adjustable range, allowing for faster room cooling. 4. Overall Purchase Recommendations and Conclusions For those seeking ultimate energy efficiency: Mitsubishi Heavy Industries is the top choice. Although the price is higher ($15,750), its superior energy efficiency offsets the cost in the long run. For value: Rasonic and Carrier achieve an excellent balance between price, electricity costs, and performance, making them ideal for users on a budget. Maintenance Notes: The report reminds users that maintenance terms vary significantly between brands, and cleaning and renewal costs should also be considered. Users should keep their purchase receipts to access maintenance and repair services. While cooling and heating air conditioners are generally more expensive, they are superior to pure cooling models in energy efficiency (higher average CSPF) and versatility (heating in winter). If circumstances permit, investing in a high-efficiency cooling and heating air conditioner is a more forward-thinking choice. *Information above is from the Consumer Council.