When a Compressor Runs Hot: How Thermal Imaging Finds the Fault

Why a Compressor Can Run Hot

There are several reasons why a compressor may run hotter than normal. The system can still be cooling even when the compressor is under extra stress.

Low refrigerant: A low charge can make the compressor work harder.
Dirty condenser: Dirt can stop the system from removing heat properly.
Worn parts or system faults: Worn compressor parts or incorrect system operation can create extra heat.

Hot surroundings can also affect the system, especially when refrigeration equipment is working in a warm area.

The cause cannot be confirmed just by touching the compressor. Proper testing is needed.

How Thermal Imaging Helps Find the Fault

A compressor that feels hot tells us there may be a problem, but it does not show exactly how hot it is or where the heat is coming from.

A thermal camera gives us a clear view of the heat across the compressor and nearby components.

It shows the surface temperature of the compressor and discharge line.
It shows where the heat is strongest.
It allows us to compare nearby components and electrical connections.

This gives us a better way to understand what is happening. It also gives us an image that can be kept with the service record.

What We Found on This Job

The thermal camera confirmed that the compressor was running hotter than expected. The heat pattern helped guide the next stage of the inspection.

Instead of simply saying the compressor felt hot, we had a clear image and measurable information to work with.

The compressor temperature was higher than expected.
The heat pattern helped point towards the likely cause.
The thermal image provided a record of the finding.

This is where thermal imaging adds value to commercial refrigeration service.

Why Thermal Imaging Matters for Commercial Refrigeration

Thermal imaging is useful when a refrigeration system appears to be working but something does not seem right. It can help find changes that may otherwise be missed during a basic inspection.

It is useful for equipment such as commercial fridges, coldrooms and freezer rooms.

It can help identify unusual heat before a major fault develops.
It provides useful images for the service record.
Future images can be compared to check for changes over time.

For Sydney CBD businesses, this can be a useful part of regular commercial refrigeration servicing and fault finding.

Sydney CBD Commercial Refrigeration Service

If your commercial refrigeration equipment in Sydney CBD is running hotter, louder or differently than usual, it is worth having it checked.

BM Refrigeration services commercial refrigeration equipment, including coldrooms and freezer rooms. Where needed, thermal imaging can help us find heat problems and guide further testing.

Frequently Asked Questions —

Some heat is normal when a compressor is running. If it is much hotter than usual, there may be a fault that needs to be checked.

Thermal imaging can show unusual heat patterns and help identify areas that need further testing.

Yes. It can help when a coldroom has an unusual compressor, electrical issue or temperature problem.

Yes. Thermal imaging can help check compressors and other components in freezer rooms when there are signs of unusual heat.