Purge Time Calculator
Pipe Diameter (inches)
Pipe Length (feet)
Flow Rate (CFM)
-- Select Flow Rate --
80 CFM – 1" Mini Air Mover
145 CFM – 2" Air Mover
Additional Purge Time (Safety Factor)
ⓘ
None
50%
100%
200%
The AGA recommends purging an additional 50% to 200% of the volume of gas as a safety margin.
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