Cooling is required for a genset engine to:
| Reason | Consequence of No Cooling |
| 1. Prevent Mechanical Failure | Seizure, melted components, catastrophic engine destruction. |
| 2. Protect Engine Oil | Oil breakdown, sludge, acid formation, loss of lubrication. |
| 3. Maintain Efficiency & Power | Pre-ignition, knocking, reduced power output. |
| 4. Control Emissions | Dramatic increase in harmful NOx emissions. |
| 5. Ensure Structural Integrity | Cracked cylinder heads, blown gaskets, warped components. |