Central air outlet vents long-term use due to electrostatic adsorption in the air causes of dust in the air, dust can easily be contaminated, affecting the appearance and health. On a regular basis (six months) by a professional cleaning outlet. Central air return air long-term use due to electrostatic reasons airborne dust in the return air and filter online gathering dust easy to breed bacteria, gaoling Daikin central air conditioning, affect the appearance and health. By professionals regularly with special cleaning agents and cleaning air filter. After work is completed, you can open the refrigerant valve, release of go out machine comes with the refrigerant, Daikin central air-conditioning agents, power-on test and detect pressure, appropriate supplement until debugging is complete, you can achieve the ideal working conditions: Filling Refrigerant . Gaoling Daikin central air-conditioning Daikin central air conditioning sales _ _ Xi'an Hao Electrical and Mechanical Services 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 specialized in the "central air conditioning" of enterprises, companies adhering to the "honesty, hard service" concept, to provide you with the most quality products and services. Welcome to inquire! Contact: Ms. Wong.