The liquid line is the copper refrigerant line that carries high-pressure liquid refrigerant from the condenser to the evaporator coil. It is critical for heat transfer in air conditioners, heat pumps, and split heat pump water heaters that rely on refrigerant lines.
/ˈlɪk.wɪd laɪn/
The liquid line is the copper refrigerant line that carries high-pressure liquid refrigerant from the condenser to the evaporator coil. It is critical for heat transfer in air conditioners, heat pumps, and split heat pump water heaters that rely on refrigerant lines.
What does the liquid line do?
It carries high-pressure liquid refrigerant from the condenser to the evaporator coil.
Source: The Cooling Company
Liquid refrigerant flows from the condenser to the evaporator.
During a maintenance visit, a technician inspects the liquid line for insulation damage or leaks to keep cooling performance stable.
Keep the liquid line insulated and have a certified technician check for leaks during routine HVAC service.
“Keep the liquid line insulated and have a certified technician check for leaks during routine HVAC service.”
An incorrectly sized liquid line can reduce capacity and stress the compressor over time.
Should the liquid line be insulated?
Yes. Insulation limits heat gain and helps keep the system efficient.
Can a liquid line leak?
Yes. Leaks reduce refrigerant charge and lower system performance.
Do heat pump water heaters use liquid lines?
Split heat pump water heaters can use refrigerant lines similar to HVAC systems.
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