Refrigerant Leaks and the Overworked Compressor
Refrigerant is the lifeblood of your air conditioning system. It’s the substance that absorbs heat from inside your home and releases it outside, and without the right amount of it, your AC cannot function properly. A refrigerant leak doesn’t just reduce cooling — it puts enormous strain on the compressor.
How Refrigerant Works
Refrigerant cycles through your AC in a closed loop. It evaporates in the indoor coil, absorbing heat, then condenses in the outdoor coil, releasing heat. The system is designed to operate at specific pressures. When refrigerant is low, those pressures drop, and the system has to work much harder to move any heat at all.
The Compressor Takes the Hit
The compressor is designed to compress refrigerant vapor at a certain pressure. When refrigerant levels are low, the compressor runs longer at improper pressures, generating excess heat and mechanical stress. Over time, this leads to compressor failure — the single most expensive AC repair.
Signs of a Refrigerant Leak
Warm air blowing from vents despite the system running
Ice forming on the refrigerant lines or evaporator coil
A hissing or bubbling sound near the indoor unit
Increased humidity indoors
Higher energy bills
What To Do
Refrigerant leaks must be repaired by a licensed HVAC technician — it’s not a DIY fix. The leak must be located and sealed before new refrigerant is added. Simply topping off refrigerant without fixing the leak is a temporary and wasteful solution.
Staying ahead of refrigerant issues through annual maintenance inspections can catch small leaks before they spiral into compressor failure.