The 9k 12k & 18k BTU MrCool DIY Ductless Split System Line Set is designed exclusively for use with MrCool DIY ductless mini splits that have a 9k, 12k, or 18k air handler. This line set will not function with any other MrCool products or any existing third-party ductless mini split products. Attempting to use this product with a non-approved system will void warranty protection for both this line set and the non-approved product.
Since it is meant for a do-it-yourself product, the 9k 12k & 18k BTU MrCool DIY Ductless Split System Line Set is user-friendly and easy to install. It comes pre-charged and sealed from the factory with the correct amount of R-410A refrigerant. It features Quick Connect fittings, so that it can plug in easily to both the air handler and the condenser without losing charge or being exposed to environmental contaminants. To make the seal complete, all you need are a few wrenches and a hex key.
The 9k 12k & 18k BTU MrCool DIY Ductless Split System Line Set features a 1/4 inch liquid line and a 1/2 inch suction line. It weighs approximately 10 lbs. It is currently available in 16 and 25 foot increments. Should you need less length for your installation, simply bundle the excess into a loose coil and store it near the condenser.
Final Sale: MRCOOL Accessories are non-returnable.
Contact a representative if you need assistance with finding the right HVAC Accessory.
|Line Set Connection Type||Quick Connect|
|Liquid Line Size||1/4 inch|
|Suction Line Size||1/2 inch|
|System Application Type||Ductless Split Systems|
|California Residents||See Prop 65 WARNING|
What BTU rating should I choose for my air handler?
|Air Handler BTU||Coverage Area/Room Size (Sq Ft.)*|
Up to 375 Sq. ft
|12K BTU||Up to 500 Sq. ft|
|18K BTU||Up to 750 Sq. ft|
|24k BTU||Up to 1000 Sq. ft|
|36k BTU||Up to 1500 Sq. ft|
*Ceiling height, insulation, and local climate may impact the coverage area. For example, an uninsulated room will require more power than a well insulated room.
Installed my own central HP system. It was a bit of work but nothing beyond a person with basic mechanical and electrical skills. It took me a while because I had to remove the existing electric forced air furnace from a pretty tight place. Some custom sheet metal work and a bit of custom electrical too. Worked perfectly when powered up and I actually like the thermostat provided, although I wish it was clearer how to set up a temperature set-back schedule. Pre-charged refrigerant piping was something new and I liked that too. The best thing is that my electric utility forked out $4,000 and that paid for the unit!
Very good delivery service installed and works like a Should
Product came packaged well, undamaged. Installation was difficult, followed instructions for suction line above coil on bilevel installation with coil above condenser. 108 inside house on startup, 103 ambient. First start, high pressure 500, low pressure 170, supply air temp 66 degrees. Very worried at first, but after house cooed down, everything within parameters. Researched 410a refrigerant, found out it looses efficiency exponentially during temperature extremes. My old r22 unit would supply 54 degree supply air in comparable operating conditions. EPA, government, a/c manufactures all lying to American public
First time ever installing Mr cool unit was built very good it has a dc converted fan motor,came with a salt shelf type coating om inside of unit over all very impressed 5star system
- We are an authorized MRCOOL dealer
- Industry leading sales and customer service
- Thousands of happy customers