BAS ATLAS
Back to BAS Atlas
point
Filter Differential Pressure
Pressure drop measured across an air filter. Rising differential pressure indicates filter loading and the need for replacement.
Brick
Filter_Differential_Pressure_Sensor
Category
pressures
Typical Range
-
Object Type
-
Haystack
Tags
filterMarkerpressureMarkerdifferentialMarkersensorMarkerpointMarker
Kind
Number
Point Function
sensor
Haystack Unit
inH₂O
Source Units
inWC / Pa
States
-
Aliases
Common
Common Misspellings
filter-diferential-pressure
Notes
- Clean filter DP is typically 0.1-0.3 inWC for MERV 8, 0.3-0.6 inWC for MERV 13
- Filter change is typically triggered at 1.0-1.5 inWC depending on filter type
- More reliable than timer-based filter changes
- Should be measured with a differential pressure transducer across the filter bank