Inconveniences

The air conditioning system for business in our new laboratory has a noise problem, that like a noise and vibration caused when some bulldozer was in action with 10m distance exactly the same as an experience at the former laboratory in station development.
The hurting ears noise is caused not by outer heat exchanger but by simply blower fan, probably because of lack of integrity of the dynamic balance of the fun construction or the motor itself?
The engineer from the manufacturing company would come to us, basically I have no intention to blame nor condemn the related engineers, because it is often the case as an initial failure for newly introduced machinery, the importance is fully guaranteed counter-measure in all fields.

7 or 8 lighting devices would be set at ceiling area, original designing is just like a lighting decoration, the perception of lighting method is completely from that for the illumination of the operative field, that should be in good contras with circumstantial sauce with good combinations.
Further researching in this concept is required in our field.