Procurement teams scrutinize big-ticket capital purchases closely. Utility costs tied to existing equipment get far less attention, largely because they’re treated as fixed operating expenses rather than line items open to negotiation or redesign.

Compressed air is a prime example. It’s everywhere in industrial facilities, used for everything from pneumatic tools to drying and blow-off applications on production lines. Because it’s already part of the infrastructure, it rarely gets re-evaluated once installed, even when better-suited alternatives exist for specific applications.

An Overlooked Line Item

For manufacturers running continuous production, drying and surface cleaning processes, removing rinse water, blowing off debris, drying coatings before the next process stage, are typically powered by compressed air by default. It’s the path of least resistance during initial system design. The compressor is already there, the infrastructure is already piped, and adding a blow-off nozzle is a simple mechanical addition.

The problem is that compressed air is one of the most expensive forms of energy in a facility. Converting electrical energy into compressed air involves substantial losses, and using that compressed air for high-volume, continuous drying applications, rather than the intermittent pneumatic tool use it was originally designed for, multiplies the inefficiency. Facilities running drying operations 24 hours a day on compressed air are often paying a meaningful utility premium without realizing there’s a more efficient path.

Where the Inefficiency Compounds

The physics of compressed air blow-off work against continuous, wide-format drying applications specifically. High-pressure nozzles lose effective force quickly with distance, which means achieving consistent drying across a wide conveyor product, sheet metal, packaging, textiles, requires either tight nozzle spacing, high pressure, or both. Either approach drives horsepower demand up.

One documented case in steel strip processing illustrates the scale of the inefficiency. A facility running three compressed air headers with 93 total nozzles at 80 PSI required 468 horsepower to dry a 72-inch wide product line, and the system still experienced rust issues whenever pressure dropped below operational thresholds. The energy cost of maintaining that pressure level around the clock represented a substantial recurring expense that had simply become accepted as the cost of doing business.

A More Efficient Procurement Path

The alternative manufacturers are increasingly evaluating is low-pressure, high-velocity air knives, engineered specifically for continuous drying and blow-off applications rather than adapted from general-purpose compressed air infrastructure. These systems use centrifugal blowers to generate large air volumes at controlled velocities, delivering the impact force needed for effective drying without the pressure-drop limitations of compressed air nozzles.

In the steel strip example referenced above, switching to a blower-based nozzle manifold system was projected to reduce total line horsepower by 336, translating to more than $130,000 in annual energy savings on a single production line. For procurement and operations teams evaluating capital equipment requests, that kind of return reframes drying and blow-off equipment from a maintenance line item into a cost reduction opportunity worth prioritizing.

Reassessing What’s “Already Working”

The hardest capital expenditures to justify are often the ones replacing equipment that technically still functions. Compressed air systems aren’t failing, they’re just inefficient relative to purpose-built alternatives. That makes the business case less about fixing something broken and more about capturing savings that have been sitting unaddressed in the utility budget.

For supply chain and operations leaders looking for efficiency gains that don’t require a full line redesign, drying and blow-off equipment is one of the more straightforward places to start. The infrastructure change is contained, the ROI is measurable, and the savings compound every shift the line runs.