FrosthubUSA is now Cool Mini Splits. Same company, old name.

Install accessories

Which line set fits?

Each indoor air handler needs its own line set, sized by BTU.

Indoor unit	16 ft	25 ft	35 ft	50 ft
6K, 9K, 12K1/4 × 3/8	$227	$264	$502	$587
18K1/4 × 1/2	$239	$272	$510	$599
24K, 36K3/8 × 5/8	$271	$457	$565	$662

View all accessories Need more than 50 ft? Join a 50 ft line set with a 16 ft or 25 ft one using a coupler kit, for 66 ft or up to 75 ft max.

Build Your Own Multi-Zone System

Mix wall units and ceiling cassettes on one MRCOOL DIY 5th Gen outdoor unit. Pick the outdoor unit, then set up each room.

Pick the outdoor unit

sets how many rooms you can add

wall unit or ceiling cassette, size, line set

not in the box, most installs need them

Adjust text colors

Adjust heading colors

Adjust background colors