How to tell if your AC just needs Freon?

Determining whether your air conditioning system simply needs more refrigerant involves observing specific cooling performance drops and physical symptoms throughout your home. One of the most common indicators is that the AC runs continuously but fails to lower indoor temperatures, producing supply air that feels lukewarm or barely cool. You may also notice ice or frost forming on the indoor evaporator coil or copper refrigerant lines, which happens because low pressure causes temperatures to drop below freezing. Additionally, you might hear a faint hissing or bubbling sound near the refrigerant tubing, indicating that gas is escaping through a leak. You can verify whether the system is low on refrigerant by having a licensed HVAC technician measure operating pressures and check for leaks using specialized gauges.