In this troubleshooting situation, a restaurant manger is calling for service on a reach-in freezer, and the complaint is that the unit “isn’t freezing things hard.”

Before you can fix a leak, you need to find it. That’s where leak detectors come in.

This article will compare subcooling amounts in a refrigeration system for three scenarios: an overcharge of refrigerant, a dirty condenser, and air in the system.

Your customers just want their problems fixed. Do you offer excuses or results?

A defective tool can lead you in the wrong direction as you try to determine the root cause of a problem.

In this troubleshooting situation, the customer’s complaint is that their office air conditioner is “not cooling at all.”

In the end, it's about airflow control. Unless your solution involves airflow and pressure measurement, you're guessing whether the repair worked.

Systematic troubleshooting using the symptom/cause method is a quick and efficient way a service technician can solve even the toughest of service calls.

When electrically inspecting or troubleshooting a compressor, you should always protect yourself against the possibility of terminal venting.

Failed ventilation itself has many more risks that owners and operators are less practiced at accounting for, but should no longer be left off the list.