An estimated one in 2,000 babies is born with all or part of a limb missing. This number includes everything from a missing part of a finger to the absence of both arms and both legs. Congenital amputation is the least common form of amputation. There have been occasional periods in history where the frequency of congenital amputations has increased.
Leading general contractors, architects and building managers rely on Design HVAC for its design/build expertise in HVAC systems, cooling systems, temperature control, process piping and air quality systems.
Types of HVAC Filters. The filter of an HVAC system is one of the most critical parts of the system. The filter increases the life and efficiency of HVAC systems by protecting them from dust, dirt and other contaminants. Many different filters are on the market, and each type of HVAC system will use a different filter.