Straightforward help choosing a mini split

Pre-Charged Line-Set Extensions

Need to place the outdoor unit farther from the indoor unit? These pre-charged R-454B extensions come in 16, 25, 35, and 50 ft lengths for.

Know what you're looking at

We show the models, what comes in the package, the line-set length, price, and current availability together.

1 product

A quick buying guide

What should you look at before choosing?

Need to place the outdoor unit farther from the indoor unit? These pre-charged R-454B extensions come in 16, 25, 35, and 50 ft lengths for compatible 9,000 and 12,000 BTU MRCOOL DIY systems. The extension joins the line included with the complete system; it is not one continuous replacement line. Match the indoor and outdoor model numbers, couplers, control wire, and total length allowed by the installation manual before ordering.

Choose the size

What does the space actually need?

Square footage is a useful clue, but it misses your windows, insulation, air leaks, climate, and ceiling height. A heating and cooling load calculation considers those details and helps you choose the right size.

See how 9k and 12k differ

Make sure the power works

Can your power source support this system?

The 115V label is only a starting point. Make sure your circuit and full power setup can handle the system, including the inverter, batteries, generator, solar charging, and other loads.

Build a battery and solar estimate