About Dynamic Future General Maintenance L.L.C

The main purpose of the HVAC system is to provide a “conditioned and controlled environment” so that a comfortable and safe environment is maintained for the occupants. Conditioned and controlled environment means air being supplied to the different zones are clean, odor free, sustaining the comfort conditions such as temperature and relative humidity and ensuring the proper movement of the air in the premises.

1. Ductwork is not reinforced to the proper Sheet Metal and Air Conditioning National Association (SMACNA) pressure classifications.
2. Failure to adequately seal ducts; i.e. air inside a supply duct under positive pressure will leak out of the seams or penetrations, causing reduced air flow.
3. Failure to understand the need to seal return and exhaust ducts.
4. Failure to adequately pressure test ductwork to prove whether or not the duct sealing is effective.
5. Failure to understand SMACNA Duct Construction Standards in the fabrication and installation.
6. Failure to properly install turning vanes.
7. Duct velocities approaching 2500 fpm may create noise and will cause increased pressure drops in fittings and ductwork.
8. Drawings with missing dimensional sizes are usually interpreted improperly. Undersized ductwork is usually installed.
9. Most specifications and details call for four duct diameters of straight duct before the inlet to a VAV box, but the actual duct drawings do not have sufficient room to allow for this installation.