Overweight simple terms is the number of horses indoor air conditioning units in the system exceeds the number of horses outdoor unit. Home projects, general air conditioning in all rooms rarely open simultaneously (as in most of the three-bedroom in open air two to three rooms) central air conditioning installation, this time in order to reduce the cost of air conditioning equipment, outdoor unit match the number is usually less than the number of horses the indoor unit, that the formation of overweight. In this case, depending on the circumstances as long as the user's actual needs and architecture, reasonable choice of indoor and outdoor air conditioning unit capacity, making the indoor unit is greater than the actual capacity of the indoor load, it can ensure the indoor air conditioning effect. For a customized central air conditioning system, central air conditioning, resulting in the production of central air-conditioning system is ineffective, the large energy consumption factors can not consist of more reasons that appear in the Xi'an central air-conditioning installation system. Points: 1, central air-conditioning energy factors - when room design cooling load calculation is not accurate 2, central air-conditioning energy factors - the room load accurately calculate, but selection of inappropriate 3, central air-conditioning energy factors - installation did not follow central air-conditioning company for construction _ Xi'an Hao Electrical and Mechanical Services (certification) _ gaoling central air conditioning provided by the Xi'an Hao 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.