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CCB Innovations

by ccbinnovations

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  • Enjoy the beauty and the efficiency of an air flow sensor. It can help keep all the fumes and toxic air out of your house and make you inhale only the best and the freshest of it. So try it and click here for some deals. What is Negative Air Pressure?In recent years, residential homebuilders have greatly increased the energy efficiency of the houses being built by better sealing and insulating  them from outside air.  By encapsulating the home from leaking air in or out, te builders are met with a wholenew set of challenges, one of which isnegative air pressure created by high CFM(cubic feet per minute) kitchen exhaust hoods. How is Negative Air Pressure Created by the Kitchen Exhaust  System?A high CFM kitchen ventilation system can deplete the air supply inside your home rapidly (fig.1) while exhausting your cooking surface.  For example, a 600 CFM (cubic feet per minute) vent hood can deplete the air in a kitchen with a 10ft ceiling that is 10ft wide and 10ft deep (length x width x depth = cubic feet) in less than 2 minutes. (fig.1)A residential single-family home ranging in size from 2,500 to 3,500 square feet can contain approximately 25,000-35,000 cubicfeet of air inside it.  If a kitchen vent hood is exhausting 600 CFM (cubic feet per minute) then it would take less than 1 hour to exhaust the cubic foot air equivalency of your entire home to the outside.  A properly installed HVAC system’s air exchange ratewill be able to maintain a relatively stable air pressure balance in your home, but is not designed or calibrated to compensate for the air lost duringtheintermittentuse of a high CFM kitchen exhaust hood.  This could lead to negative air pressure in your home.

    Air Flow Sensor











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