推荐回答（2个）
不同中央空调系统和品牌耗电量有差别。氟系统中央空调是各中央空调系统中最节能省电的中央空调系统，采用直流变频技术和环保冷媒制热，制热高效节能，省电效果较好。
中央空调系统由一个或多个冷热源系统和多个空气调节系统组成。采用液体气化制冷的原理为空气调节系统提供所需冷量，用以抵消室内环境的冷负荷；制热系统为空气调节系统提供所需热量，用以抵消室内环境热负荷。
制冷系统是中央空调系统至关重要的部分，其采用种类、运行方式、结构形式等直接影响了中央空调系统在运行中的经济性、高效性、合理性。
功能上讲，一台家用中央空调相当于几台壁挂和柜式机，其机器用电量小于每个房间装一台空调的用电量之和，而家用中央空调的效果却比装几台的效果要好。
家用中央空调整体性能发挥很大作用取决于工程的安装质量。济宁大鑫伟业空调工程有限公司技术专家在多年的施工经验总结中，首先提出了“三分质量、七分安装”的判断，现已成为业内共识。因此，空调安装、连接与调试的好坏，将直接影响到用户的人身财产、环境安全和使用效果，并成为保障空调正常工作运行的重要环节。如果空调安装质量不合格，会给消费者带来很多隐患，放眼望去，国内家用中央空调市场，由于作为典型的隐蔽工程，很多部分消费者无法监控，加之安装部分成本较高。许多不良商家各种手段，其致不惜铤而走险。空调买贵了，那冤枉钱还是花在明处。而空调的使用成本上升，花在暗处的冤枉钱可就要源源不断啦。
定速空调的制冷功率(约为)1匹800瓦，1.5匹1200瓦，2匹1800瓦，2.5匹2200瓦，3匹2800瓦,如果房型面积很大。5匹4600瓦，也就是能效比纷歧样，举例：3匹定速空调的制冷功率约为2800瓦，累计工作一小时耗电量=2800÷1000=2.8度。
定频空调累计工作一小时耗电量/度=制冷功率÷1000, 空调日耗电量/度=制冷功率×日累计工作小时(必需是外机不停机的情况下的累计工作小时，要是外机停过，应该把停机的时间去掉)÷1000
中央空调耗功能上讲，一台家用中央空调相当于几台壁挂和柜式机，其机器用电量小于每个房间装一台空调的用电量之和，而家用中央空调的效果却比装几台的效果要好。从用电费用看，家用中央空调的耗电并不会比壁挂、柜式分体机多，且电费远比供暖费低得多。以三室一厅，建筑面积90平米为例，估算电费如下(所有房间都开启空调)
以每年使用空调时间3个月(90天)计算，每天使用时间14小时，经验工作时间约为使用时间的40-50%如使用MCC-025冷暖家用中央空调，制冷量6800W功率2500W则每年耗电为：901445%2500/1000=1417.5度，相比之下，如各个厅室分别使用1.25匹壁挂机，单台制冷量为2500W功率1000W上述相同条件，同时有3台机器工作，则为:901445%3000/1000=1701度。
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