When can HFC 134A become combustible any mobile air conditioning system?

HFC-134a (tetrafluoroethane) is generally considered non-flammable under normal conditions. However, it can become combustible if subjected to extremely high temperatures or pressures, leading to thermal decomposition and the potential release of flammable byproducts. This risk is heightened in situations where there is an ignition source present. Therefore, while HFC-134a is safe under standard operating conditions, care should be taken to avoid extreme conditions that could lead to combustion.