Xi'an say straightaway that central air-conditioning, refrigeration to the set temperature when the compressor stopped working, fixed-frequency means that the compressor has been based on a certain power frequencies Xi'an central air conditioning installed, so the basic fixed-frequency air compressor speed Xi'an unchanged central air-conditioning manufacturers, relying on constantly 'on stop' compressor to adjust the indoor temperature. Advantages and Disadvantages of fixed-frequency air Analysis: Advantages: low price, wide choices, rich product variety. Disadvantages: costs of electricity, poor intelligence. Advantages and Disadvantages of inverter air conditioner Analysis: Advantages: accurate temperature control, indoor temperature fluctuation is small, body comfort, energy saving. Disadvantages: high cost, high prices, long-term impact of air conditioning compressor life at a low voltage. Xi'an central air conditioning agent | Xi'an Hao Electrical and Mechanical Services (certified) | Xi'an Xi'an Hao central air conditioning is provided by the Electrical and Mechanical Technology Limited. Xi'an Hao Electrical and Mechanical Technology Co., Ltd. (www.029hfkt.com/)(www.029hfkt.com) is Xi'an, central air conditioning leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. Xi'an Hao Electrical and Mechanical Services leadership with the staff warmly welcome all inquiries negotiations to create the Electrical and Mechanical Xi'an Hao better future.