We recommend DG-700 and DG-500 pressure gauges be recalibrated once every two years. Blower Door and Duct Blaster fans do not need recalibration unless testing requirements mandate a calibrated fan.
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We recommend DG-700 and DG-500 pressure gauges be recalibrated once every two years. Blower Door and Duct Blaster fans do not need recalibration unless testing requirements mandate a calibrated fan.