Air Receiver Tank Size Calculator
How big should the air receiver be? Enter your peak demand and see the litres needed.
How to size an air receiver
A receiver stores air so short peaks do not drag line pressure down. Volume = shortfall air flow × time × atmospheric pressure ÷ allowed pressure drop. Shortfall is peak demand minus what the compressor makes.
Example: a 60-second peak of 80 CFM on a 47 CFM compressor, allowing a 15 psi drop, needs about 916 L of storage, so choose the next size up.
Frequently asked questions
What size air receiver tank do I need?
Work out the shortfall between peak demand and compressor output, how long the peak lasts and how much pressure drop you can accept. Use the calculator above.
Does a bigger receiver tank give more air?
No. It stores air to cover short peaks. It does not increase the compressor output, so continuous demand still needs the right compressor.
How many litres per CFM should a receiver have?
A common rule of thumb for general use is about 5 to 10 litres per CFM of compressor output, though the calculation above is more accurate for a specific peak.
Do air receivers need to be inspected in Australia?
Pressure vessels are regulated. Registration and inspection requirements depend on size, pressure and your state or territory regulator, so check with them.
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