In the case without heating, complete with air conditioning heating can it? Under normal circumstances can be, but the outdoor temperature is below minus 10 degrees Celsius, air conditioning, heating effect is greatly reduced. Not only central air conditioning, the other split air as well. There are ways to solve the above problems - plus an auxiliary heating device (electric heating coil or hot water coil), even at low temperatures Which Xi'an central air conditioning, central air-conditioning fan coil central air conditioning unit before further to ensure that generation of heat. What is the role of central air conditioning? 1. Functional cooling in the design and manufacture of air conditioners, generally allows to control the temperature between 16 ~ 32 ℃. Should the temperature is set too low, central air-conditioning agents Xi'an, on the one hand an unnecessary power consumption, on the other hand cause the indoor and outdoor temperature difference is too large Xi'an central air conditioning, people out of the room can not quickly adjust to temperature changes, susceptible to colds. 2. The dehumidifying air-conditioning with the air conditioner in the dehumidification cooling process. People feel comfortable ambient relative humidity should be around 40 to 60%, when the relative humidity is too large, such as more than 90%, even if the temperature in the comfort range, people still feel poor. 3. The heat pump heating and electric air conditioner has a heating function. Heating capacity with the outdoor ambient temperature decreases progressively smaller, can hardly meet the heating requirements if the temperature at -5 ℃. 4. Clean air in the air with a certain amount of harmful gases such as NH3, SO2, etc., and a variety of sweat, body odor and the bathroom smelly odor and so on. Air conditioner purification methods are: renewal wind, filtration, or the use of activated carbon adsorption and absorption photocatalyst. A, renewal wind: the use of the indoor fan system moist air to outdoor volleyball, indoor a certain degree of negative pressure, fresh air into the room around Xi'an central air supply from the door, Chuang Feng, improve indoor air quality. B, photocatalyst: in the light irradiation can be regenerated, adsorption (income) of ammonia, nicotine, acetic acid, hydrogen sulfide and other harmful substances freed, re-use central air conditioning supply Xi'an, Xi'an, central air conditioning, the Electrical and Mechanical Xi'an Hao Xi'an Hao Electrical and Mechanical Technology Limited. Xi'an Hao Electrical and Mechanical Technology Co., Ltd. (www.029hfkt.com/)(www.029hfkt.com) strong, credible, in Xi'an in central air-conditioning industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Electrical and Mechanical Xi'an Hao into the brilliant and you work for a better future!