CHILLER CONCEPTS

A Clean Number Is Not Always Believable: How to Know If Chiller Data Can Be Trusted
Chiller data quality A number can look precise, come straight from the machine, and still be weak evidence. The panel can look precise. The BAS can trend smoothly. The log sheet can be complete. None of that proves the number is trustworthy. Precision tells you how the number is displayed. Believability tells you how much weight it deserves. What makes a reading stronger? A strong reading is not just a number that looks reasonable. It has enough context to show what it represents and how much confidence it deserves. Known... Read more...
Carnot Equation for Chillers: Why kW/Ton Can Mislead You
Sadi Carnot’s 200-year-old equation gives chiller mechanics a better way to judge performance. By accounting for lift and comparing a machine to its own history and identical peers, it helps separate harder operating conditions from a real change in efficiency. Read more...
Condenser Approach: What It Tells You — And Why Dirty Tubes Get Blamed Too Fast
High condenser approach can point to poor heat transfer, but dirty tubes are only one possible cause. Learn how flow, bad readings, air, and other conditions can produce the same symptom. Read more...
The Chiller Wasn’t Failing. It Was Overloaded.
A Saturday night no-cooling call looked like a chiller problem. The machine was running but not making setpoint. The calculated load showed the real issue: the plant was pushing the chiller to 115% of design.   Read more...
One Extra Reading Exposed a BAS Error Costing Chiller Efficiency
A BAS value can look believable and still be wrong. This real-world example shows how one field-verified reading exposed a tower-control issue that was quietly increasing chiller lift, kW, and operating cost. Read more...
The Gap Between a Chiller Log and a Finding
A chiller log can be completely filled out and still not tell the team what matters. The log records the reading. A finding explains what deserves attention. Read more...
Why Chiller Diagnostics Still Depend on Senior Mechanics
Most chiller logs already have the readings, and the formulas have been around for years. The real gap is that the industry never built a repeatable workflow to turn those readings into trusted diagnostic judgment. Read more...
Evaporator Approach: A Measure of Inefficiency — and Why People Blame It Too Fast
Evaporator approach is a measure of inefficiency, but people blame dirty tubes too fast. This guide explains what the number means, what can move it, and how good techs use it without fooling themselves. Read more...
What Is a Good kW per Ton for a Chiller?
kW per ton is one of the fastest ways to judge chiller efficiency, but it is easy to misuse. This guide explains what the number means, what can distort it, and how to compare it the right way. Read more...
How to Estimate Chiller GPM Using Pressure Drop
Estimate chiller GPM from pressure drop using design flow, design pressure drop, and field readings. Learn where this method helps, where it can mislead, and why flow must be verified before judging tons, approach, or kW/ton. Read more...