This case study shows the psychometric analysis of two RTUs on the same roof of a pharmaceutical production facility.

What “psychrometric analysis” means here

At its core, psychrometrics is the study of air properties:

• Temperature

• Humidity

• Enthalpy (total heat energy)

• Dew point

In HVAC coil restoration, it’s used to measure how much heat this coil is actually removing from the air.

Why this matters (and why it’s better than “just temperature”)

Most contractors only look at:

• “Air in vs air out temperature”

That misses half the story.

Psychrometrics captures:

• Hidden moisture load

• True system capacity

• Coil efficiency

A dirty coil might still show a temperature drop—but not be removing much total energy.

What changes after coil restoration

When a coil is cleaned properly:

• Airflow increases (less restriction)

• Heat transfer improves

• Moisture removal improves

So you’ll see:

• Larger Δh (enthalpy difference)

• Higher BTU output

• Better comfort (less humidity)

[ + ] Click image to enlarge