An efficient air compressor can pay for itself through lower energy, maintenance and downtime, but the case must be built on numbers. An ROI calculation compares the higher purchase price of an efficient machine against the savings it generates each year.
Cost components
- Energy cost per year
- Maintenance and spares
- Downtime and lost production
- Capital and installation
Savings sources
Variable speed control, a higher efficiency motor and heat recovery all cut the energy bill. Fewer service visits and longer service intervals reduce maintenance, while better reliability protects production from unplanned stops.
Calculation
Estimate annual savings for each source, subtract any financing cost, and divide the price premium by the annual saving to get the simple payback period. Most industrial machines recover an efficiency premium within two to five years, after which the savings continue for the remaining life.