Compressor Energy Savings Calculator

What Is a Compressor Energy Savings Calculator?

A compressor energy savings calculator estimates what your compressed air system costs to run each year, then shows the two biggest savings most sites are missing: switching a fixed speed compressor to a variable speed drive (VSD), and fixing air leaks. It works from four numbers you already have: compressor kW, running hours, operating days, and your electricity tariff.

Fixed Speed vs Variable Speed Drive

A fixed speed compressor has two modes: flat out or idling offload, and offload running still consumes 20 to 30% of full load power while producing no air. A VSD compressor matches motor speed to actual demand, so if your demand varies through the day, the saving is typically 15 to 35% of the energy bill. Over a 10-year life, energy is around 75% of a compressor's total cost of ownership, which is why the right control type matters more than the purchase price.

The Other Two Savings Worth Checking

Leaks waste 20 to 40% of the air most sites generate. An air leak detection survey tags and costs every leak so repairs pay for themselves. And because up to 94% of a compressor's electrical input becomes heat, heat recovery can turn that waste into space heating or hot water with payback in 1 to 3 years. Not sure your compressor is the right size in the first place? Start with the air usage calculator.