G99AirGage - Nordic Pure

G99AirGage

  • $ 15.25
  • Save $ 11


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  • No more guessing! An easy-to-use, easy-to-read gage to monitor filter media loading so that filter media may be changed when needed. The gage is installed between the blower and the filter, where a slight vacuum exists due to the air-flow resistance of the air filter. Air flowing into the gage, around the calibration screw, lifts a vane in proportion to the negative pressure in the blower compartment. As the air filter loads, the vacuum increases, raising the vane to indicate a filter change is necessary. ·Dial design is easy to read and interpret when filter needs to be changed. ·Easy to calibrate for new, clean media. ·Easy installation. ·Built-in filter screen removes dust from sampled ambient air to keep gage clean. ·May be mounted remotely up to 10 feet from monitoring location (with extension kit). ·Easy to disassemble/assemble for service. ·Low cost. APPLICATION The GeneralAire G-99 Air Filter Gage provides a visual indication of the need to replace the air filters in forced air heating and cooling systems. The gauge is installed between the blower and the filter where a slight vacuum exists due to the air flow resistance of the air filter. Air flowing into the gage, around the calibration screw, lifts a vane in proportion to the negative pressure in the blower compartment. As the air filter loads, the vacuum increases, raising the vane to indicate a filter change is necessary. The gage may be calibrated in a negative pressure range from 0.1 to 0.4 inch w.c. When properly calibrated in this range a vacuum increase of 0.10 to 0.15 inch w.c. will indicate a filter change is necessary.