Spectrum Electrical & Data deal exclusively with Split System air conditioning units.
Split systems are generally used to air condition houses, although they are perfectly capable for commercial environments, such environments include small shops, offices or restaurants. Split systems provide both cooling and heating features.
A/C parts that generally make the most noise are the compressor and the fan that cools the condenser. In a split system, the compressor and fan for the condenser are located outside of the room being cooled, removing major sources of noise.