MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set

The MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set with DIY Pro Cable is designed for extended installations where more distance is needed between your 24K or 36K indoor mini split air handler and the outdoor condenser. Pre-charged with R-454B refrigerant and equipped with Quick Connect fittings, this line set eliminates the need for vacuuming, gauges, or professional HVAC tools. The included weatherproof DIY Pro Cable ensures consistent communication and power between units, making this the ideal accessory for MRCOOL DIY installers looking for a longer, more durable connection option.

MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set Features

Pre-Charged with R-454B – Factory-sealed with R-454B refrigerant, allowing for a seamless, no-hassle installation.

Quick Connect Fittings – Patented tool-free fittings ensure a leak-proof, fast connection with no need for refrigerant handling.

Built for Larger Units – Engineered specifically for MRCOOL DIY 24K and 36K indoor air handlers, with the correct line sizing for optimal performance.

Extended 35 Ft. Length – Offers increased flexibility for installations across longer distances, second stories, or detached structures.

DIY Pro Cable Included – Comes with a weather-resistant communication and power cable, streamlining the entire installation process.

Protective Insulation Jacket – Durable exterior jacket resists UV exposure and weather damage, ensuring longevity and reliable performance.

MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set Applications

• Second-story installs – Ideal for vertically-separated indoor and outdoor units

• Garage or ADU applications – Great for detached spaces like shops or guest houses

• Wider wall spans – Useful when air handler and condenser must be placed far apart

• DIY replacements – Perfect for replacing or extending worn line sets in MRCOOL DIY systems

• Medium-range residential setups – Supports efficient mid-distance installations with larger-capacity units

What’s Included?

• 35 Ft. Line Set (3/8" x 5/8")

• DIY Pro Communication and Power Cable

• Pre-installed Quick Connect fittings
  

MRCOOL DIY 5th Gen 35 Ft. Pre-Charged Quick Connect Line Set Specifications

Frequently-Asked Questions

Is this line set compatible with smaller MRCOOL units?
No. This model is only compatible with MRCOOL DIY 24K and 36K air handlers and will not fit smaller systems due to its line size.

Does this line set include refrigerant?
Yes. It comes factory pre-charged with R-454B refrigerant and is sealed for ready-to-connect installation.

Can I shorten the line if needed?
No. The line set must be used at its full 35-foot length. Modifying it will void the sealed charge and compromise system performance.

Do I need to hire a professional to install it?
No. This is a DIY-friendly line set designed to be installed without HVAC tools. However, if you are unfamiliar with MRCOOL systems, a licensed HVAC technician may still be helpful.