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Refrigerant Lines

Refrigerant lines are insulated copper lines that transport refrigerant between your outdoor and indoor HVAC units.

What are refrigerant lines?

Refrigerant lines allow refrigerant to flow between the outdoor and indoor units, which makes it possible for the condenser and coils to transport and displace heat from your home. These insulated copper lines are an essential part of any cooling system. There are two types of refrigerant lines: liquid and gas. The liquid refrigerant line transports coolant between the condenser and coils, while the gas refrigerant line carries refrigerant gas.

Watch this video on how HVAC systems work to learn more details on heating and cooling systems and what refrigerant lines do in the overall process.

Do refrigerant lines need to be replaced?

Refrigerant lines are designed for efficiency and durability, so they should last for many years with minimal maintenance. However, it’s important to have your refrigerant lines checked regularly. If you notice any problems with your refrigerant lines, be sure to contact a professional HVAC technician for assistance. 

Occasionally, refrigerant lines may need to be replaced due to corrosion or damage. Depending on the type of refrigerant line you have and the amount of damage it has sustained, a professional HVAC technician can help evaluate your refrigerant lines and determine an appropriate solution. 

Refrigerant lines also need to be replaced when you upgrade or replace your air conditioner or heat pump. It is not advisable to reuse old refrigerant lines as the sealant on the lines can wear down over time. If this happens, moisture will get in and mix with the coolant, which can damage the inside of your system.

How long do refrigerant lines last?

Refrigerant lines typically last 20-25 years. Any damage or contamination can shorten the lifespan of your lines, but typically that’s how long they should last. To ensure that you get the full life expectancy out of your lines, make sure you get a high-quality install from a trusted technician.

If properly installed and cared for, your refrigerant lines will last as long if not longer than the rest of your AC unit. Unless they suffer specific damage, you shouldn’t have to replace them until you replace your system entirely.

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