Really central air-conditioning noise problem, either do not produce, or that require strong and effective damping measures, and design through the accurate calculation of the suction noise barriers envelope technology. Noise control methods: 1. vibration and noise reduction work to do the installation. First, central air-conditioning noise vibration generated by the host, reducing its need to start from the noise damping link. 2, a lot of central air-conditioning does not meet indoor noise standards, needs to be more careful when installing, certain measures can be used if necessary. Winter and summer air conditioning unit noise bothered the rest of the residents reported frequent Xi'an central air conditioning production, especially in hotels and foot bars, restaurants Xi'an central air conditioning, no air conditioning unrealistic, it can only make rectification. Indoor noise is less than 48db, the outdoor unit noise is less than 58db. 3, if the noise is too large, you can set the supply and return air plenum chamber silencer. 4, control the connection duct internal speed, not more than 3m / s is appropriate; the length of the duct between the tee, elbows, valves and other components should be three to five times the diameter of the straight line from the duct. 5, central air conditioning indoor unit and the installation of central air conditioning outlet in Xi'an, should not be installed in the user frequently visits position just above, preferably eccentrically mounted on the aisle and ceiling at the human perception of noise appearance and small home central air conditioning indoor ceiling thickness hosts and pipeline is the number? Interior home central air conditioning host thickness of only 23 cm, the installation along the roof at the host and distance of 25 cm; duct thickness of 8-18 cm; from the interior toward the toilet host condensate pipe from the roof of the photorefractive 26 cm. Home decoration all keel and gypsum board thickness of 3 cm, the maximum ceiling thickness of 28-29 cm central air conditioning central air conditioning Xi'an Which is better _ Xi'an Hao Electrical and Mechanical Services (certification) central air conditioning _ Xi'an Xi'an Hao Electrical and Mechanical Services 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.