Air conditioning performance is something most drivers only notice when it fails

On a hot day, a weak or uneven airflow can quickly turn into frustration, and diagnosing the root cause is not always straightforward.
Topdon says this is where thermal imaging proves its value.
It states that with the Topdon TC002C Duo, any iOS or Android device can be transformed into a powerful thermal camera, giving technicians a clear view of what is happening inside an AC system.
Equipped with a 256×192 thermal resolution, a wide 50°×37.2° field of view, a 25Hz refresh rate, and a temperature range from 4°F to 1022°F, Topdon says the TC002C Duo delivers the clarity and accuracy needed for real-world diagnostics.
In automotive AC systems, thermal imaging allows technicians to quickly confirm expected temperature patterns across critical components:
• Condenser: it should show a smooth hot-to-cool transition; irregularities may indicate blocked fins or internal restrictions.
• Receiver/drier or accumulator: abnormal cold spots can reveal blockages or freezing.
• Expansion valve: temperature drop can be checked in real time, helping identify valves that are stuck or restricted.
• Evaporator and ducts: scans highlight uneven cooling or partial freezing that may not be visible otherwise.
• High- and low-pressure lines: a clear hot-to-cold gradient is expected; sudden jumps point to restrictions.
• Compressor: it should operate warm but not excessively hot; comparing suction and discharge ports provides insights into efficiency and lubrication.
By visualising these patterns, workshops can reduce unnecessary disassembly and speed up fault identification.
Topdon says the result is greater diagnostic accuracy, improved workshop efficiency, and more transparent communication with customers.
Beyond air conditioning, Topdon says the TC002C Duo is also effective for electrical inspections, checking heated seats or rear defrosters, and general engine assessments, making it a versatile addition to any workshop toolkit.
As AC systems become increasingly sophisticated, thermal imaging is moving from a “nice-to-have” to an essential diagnostic tool.
By revealing issues invisible to the naked eye, it enables faster, more reliable service and helps technicians deliver real value to their customers, says Topdon.

For more information, visit www.topdon.com