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Line Sets


MRCOOL Line Sets

MRCOOL line sets contain a pair of copper tubes used to connect the outdoor condenser unit with the indoor air handler in a mini split or split heat pump system. There are three types of MRCOOL line sets, each of which are designed to work with specific MRCOOL systems.

DIY Line Sets

The MRCOOL DIY Line Sets are the brand's most popular line set type and are used for the EZPRO and DIY 4th Generation Mini Splits. These MRCOOL DIY Line Sets come pre-charged with R-410a refrigerant and feature MRCOOL's patented Quick Connect Technology. This patented technology remove the soldering and vacuuming process used in conventional line sets, enabling MRCOOL to offer the only true Do-It-Yourself (DIY) mini splits on the market.

Although designed for Do-It-Yourself installation, the MRCOOL DIY Line Sets maintain uncompromising product quality. These line sets are both rip proof and kink resistant, and feature a diamond patterned outer cover made to withstand harsh environments. MRCOOL is so confident in their build quality, in fact, that they had two NFL linebackers play tug-o-war with a line set. The company also used a line set to tow a truck. In both tests, the line sets came out unscathed.

No-Vac Quick Connect Line Sets

The MRCOOL No-Vac Quick Connect Line Sets, also known as theUniversal Line Sets, are pre-charged line sets used to connect ducted split systems from the Hyper Heat, Universal, and VersaPro collections. 

Like the DIY Line Sets, these line sets feature a strong outer cover and come equipped with MRCOOL's Quick Connect Technology, but do use different liquid and suction line sizes.

Flared Line Sets

MRCOOL Flared Line Sets offer a more conventional approach to connecting mini split systems. Unlike the DIY Line Sets and No-Vac Quick Connect Line Sets, the MRCOOL Flared Line Sets do not come pre-charged with R-410a refrigerant and do not feature the Quick Connect technology.

Instead, these line sets use a flared fitting and require the lines to be charged and vacuumed. The MRCOOL Flared Line Sets are compatible with the Advantage Series Mini Split Systems and must be installed by a licensed HVAC technician. 

Line Set Add-Ons

To make your installations more seamless, MRCOOL offers a couple line set accessories. In the event you need to extend your line set, for example, you can purchase a  MRCOOL Line Set Coupler. These small connectors allow you to connect two line sets together to make one longer line set.

The MRCOOL LineGuard is another great line set accessory that offers both aesthetic and functional benefits. These line set covers can be easily installed over your line sets to not only give them a sleek look, but to also protect them from ultra-violet (UV) damage and extreme weather conditions. 

Why Shop at MRCOOL HVAC Supply

At MRCOOL HVAC Supply, our goal is to offer MRCOOL products at the lowest price, with the best customer service, and with the most streamlined shopping experience. If you are not sure what line set to get, reach out to our team of experts and get a recommendation from us. 

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