DIY16-1412 MrCool DIY Accessories HVAC Lineset 16Ft 1/4 x 1/2, For DIY 9K, 12K & 18K Indoor

Regular price $205.00 USD
Regular price Sale price $205.00 USD
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Shipping calculated at checkout.

Benefits & Features

✅Easy to install: Seamless installation process with MRCOOL DIY Coupler.
✅Kink resistant: Guarantees hassle-free use for HVAC professionals.
✅Leak proof: Reliable performance in demanding HVAC installations.
✅No vacuum needed: Ready for use with R-410A refrigerant.
✅Connect line sets together: Efficient connections with the MRCOOL DIY Coupler.


Item Dimensions: 16ft in Length
Item Weight: 15.00 lbs
Item Color: White

Line-set Fitting Type: Quick-Connection
Liquid Line Size: 1/4"
Suction Line Size: 1/2"
Insulation: 3/4"

Batteries: No
Electronics: No
Chemicals: Yes
Aerosol: Yes
Compressed Gas: Yes

Proposition 65 Warning: Yes
Restricted States: GU;PR;VI

Expertly crafted for HVAC professionals, the MrCool DIY Accessories Lineset in a 16ft. length is the essential choice for modern installations. Its kink-resistant, leak-proof design ensures hassle-free installations, while the pre-charged R-410A refrigerant guarantees compatibility with today's HVAC standards. With a bronze-copper metallic finish, this line set not only offers longevity but also an aesthetically pleasing look. Compatible with 9K, 12K & 18K DIY series air handlers, it warns about chemical exposure, emphasizing safety and quality.


  • Quick Connect Line Set — 9K12K & 18K Mini Split Systems
  • Refrigerant — R-410A
  • Will not work with other MRCOOL products or third-party mini split products.

Warning: This product can expose you to chemicals including Lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm:


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Frequently Asked Questions about the DIY16-1412 MrCool DIY Accessories HVAC Lineset 16Ft 1/4 x 1/2, For DIY 9K, 12K & 18K Indoor

What is an HVAC Lineset?

An HVAC Lineset is a pair of copper tubes that connect the indoor and outdoor components of a split system air conditioner or heat pump.

Why is it called a Lineset?

It's named Lineset because it consists of two lines – a liquid line that carries refrigerant from the outdoor unit to the indoor unit and a suction line that returns refrigerant from the indoor unit to the outdoor unit.

What is Quick-Connect, and why is it beneficial?

Quick-Connect is a feature that simplifies the connection process during installation, ensuring a secure and efficient fit.

What precautions should I take during installation?

Always follow safety guidelines and adhere to chemical warnings. Wear appropriate protective gear, and ensure proper ventilation when working with refrigerants.

How does the Lineset contribute to energy efficiency?

The kink-resistant and leak-proof design of the HVAC Lineset ensures optimal refrigerant flow, contributing to the overall energy efficiency of the HVAC system.