The efficiency of aeration systems can be measured in different ways. Different aeration system have different efficiency. The exact efficiency of an aeration system is very dependent on the circumstances under which it is measured such as liquid depth, density of diffuser, energy level in the tank, etc. Below is a table of the efficiency of various aeration system adapted to give values in kilowatt-hour per kilogram of oxygen adapted from the table give by Environmental Dynamics In. (Energy Consumption and Typical Performance of Various Types of Aeration Equipment)
| Aeration System | kWh/kg |
| Mechanical Aeration Systems | |
| Brush aerators surface aeration | 0.47-0.66 |
| Slow speed surface | 0.47-0.55 |
| High speed splash surface aeration | 0.51-0.66 |
| Induced surface aeration | 1.10-1.64 |
| Combination Systems | |
| Submerged turbine | 0.66-1.10 |
| Jets (pumps with compressors) | 0.47-0.82 |
| Diffused Aeration, Coarse Bubble | |
| Static tubes | 0.47-0.82 |
| Wide band grid | 0.47-0.66 |
| Misc. coarse bubble | 0.47-0.82 |
| Diffused Aeration, Fine Pore | |
| Ceramic disc or ceramic dome grid | 0.23-0.33 |
| Flexible membrane disc | 0.23-0.41 |
| Advanced Technology membrane | 0.14 |
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