Check Refrigerant Charge Before Jumping to Conclusions

Low refrigerant charge is one of the best mimics in HVAC. It can look like a bad compressor, a failed TXV, or a frozen coil. Before you start swapping parts, hook up your gauges and check the charge. A two-minute pressure reading can save you from a misdiagnosis that costs your customer money and costs you credibility.

PrecisionOps diagnostics can calculate superheat and subcooling from your readings and flag when values are outside expected ranges. Log those numbers in the job record every time. Over multiple visits, pattern recognition can help you spot slow leaks or declining system performance before it becomes an emergency callback.

The rule is simple: verify the charge first, diagnose second. Experienced techs know that the boring basics catch more problems than the exotic theories.