Calculate Cooling Capacity of a Chiller in HVAC

When working in HVAC, one of the most confusing things at the beginning is figuring out how much a chiller can actually cool. And honestly, I get it-the formulas look scary, the units feel weird, and everybody on site talks about it like it’s super simple. But once you understand the logic behind it, the calculation of chiller capacity becomes surprisingly easy. Let’s break it down in simple, human language.

What Cooling Capacity Actually Means

Cooling capacity essentially tells you how much heat a chiller can remove from the water passing through it. Since HVAC is all about keeping buildings comfortable, this capacity decides whether a chiller is perfect for a project or not. If your chiller is too small, rooms won’t cool properly. If it’s too big, you waste energy and money.