A/C Not Cooling - Identifying R12 vs R134a Conversion and Recharging

Body/Interiorbeginner✓ OP Confirmed

Problem

A/C system was not producing cold air. Owner needed to determine whether the system had been converted from R12 to R134a before recharging, as using the wrong refrigerant can damage the system.

A/C blowing hot air or not coolingUnknown refrigerant type in system after previous owner workLow refrigerant charge

Root Cause

Low refrigerant charge in an R134a-converted A/C system. The system had been previously retrofitted from R12 to R134a but was low on refrigerant.

Confidence

Moderate confidence — Original poster confirmed this resolved the issue

View Original Thread →Posted July 2022 on SupraForums.com