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. The first is the central air-conditioning noise generated by the host Xi'an central air-conditioning manufacturing vibration, 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 that uncommon, especially in some hotels, foot shop, restaurant, no air conditioning central air conditioning unrealistic Xi'an Which is good, 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 an air outlet, should not be installed in the user frequently visits position just above, preferably eccentrically mounted on the aisle and ceiling at the beautiful and small for the human perception of noise in the home central air conditioning installation, temporarily there is no special standard, in order to facilitate supervision and inspection of home users, so that consumers peace of mind at ease to use, the Harbour through the small series put together following installation specifications. Of course, these specifications are referring to large commercial central air conditioning installation specifications from: 1, residential central air conditioner indoor unit is generally installed in the ceiling Nei Xian central air conditioning, in determining the installation location, should be noted: (1) Interior location can not be installed near a power supply (such as electric heaters, gas stoves, etc.) and steam sources. (2) blowing cold air should flow extraordinary activities of the main plant, there are no obstructions near the exhaust vents. (3) from the host computer to a TV, stereo, etc. more than a meter, in order to avoid mutual interference. Around (4) anti-set air intake Do not obstruct the air intake of obstructions. (5) away from heat, flammable gases place. (6) and the upper ends should leave room. (7) Do not go near the place of high-frequency equipment, high-power wireless devices to avoid interference with the normal operation of air conditioning. Xi'an, central air conditioning, central air conditioning Xi'an, Xi'an Hao Hao Electrical and Mechanical Services provided by Xi'an 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!