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MRCOOL DIY mini split heat pump systems and HVAC units for home heating and cooling.

MRCOOL

MRCOOL is one of the most popular names in DIY-friendly HVAC systems, offering innovative mini splits, heat pumps, and central heating and cooling solutions designed for easy installation and long-term efficiency. The MRCOOL DIY series is especially known for its pre-charged line sets, allowing homeowners to install a professional-quality system without the need for special tools or HVAC certification.

The MRCOOL collection includes DIY mini split systems, multi-zone units, heat pumps, condenser and air handler systems, and smart HVAC technology that delivers quiet operation, energy savings, and year-round comfort. Perfect for homes, workshops, additions, or offices, MRCOOL provides affordable climate control, simple installation, and reliable performance backed by modern engineering.

Showing 145-162 of 162 results
MRCOOL 35 ft. 1/4 x 1/2 Pre-Charged Quick Connect Line Sets w/DIY PRO Cable (for 18K Indoor) - R454B - DIY35-1412C-O
MRCOOL 35 ft. 1/4 x 1/2 Pre-Charged Quick Connect Line Sets w/DIY PRO Cable (for 18K Indoor) -...
$510.00
MRCOOL 35 ft. 1/4 x 3/8 Pre-Charged Quick Connect Line Sets (for 6K 9K & 12K Indoor) w/ DIY PRO cable - R454B - DIY35-1438C-O
MRCOOL 35 ft. 1/4 x 3/8 Pre-Charged Quick Connect Line Sets (for 6K 9K & 12K Indoor) w/...
$502.00
MRCOOL 25 ft. 3/8 x 5/8 Pre-Charged Quick Connect Line Sets (for 24K & 36K Indoor) - R454B - DIY25-3858-O
MRCOOL 25 ft. 3/8 x 5/8 Pre-Charged Quick Connect Line Sets (for 24K & 36K Indoor) - R454B...
$457.00
MRCOOL DIY 5th Gen Multi-Zone 6k BTU Wall Mount Air Handler DIY-06-HP-WMAH-230D25-O
MRCOOL DIY 5th Gen Multi-Zone 6k BTU Wall Mount Air Handler DIY-06-HP-WMAH-230D25-O
$457.00
MRCOOL 75ft Coupler Kit for DIY Line Sets on Single Zone and Multizone 9K, 12K & 18K Air Handlers - 1/4
MRCOOL 75ft Coupler Kit for DIY Line Sets on Single Zone and Multizone 9K, 12K & 18K Air...
$393.00
MRCOOL 75ft Line Set Coupler Kit for DIY Single Zone and Multizone 9K, 12K & 18K Air Handlers - 1/4
MRCOOL 75ft Line Set Coupler Kit for DIY Single Zone and Multizone 9K, 12K & 18K Air Handlers...
$378.00
MRCOOL 75ft Line Set Coupler Kit for DIY Single Zone and Multizone 24K, 36K & 48K Air Handlers - 3/8
MRCOOL 75ft Line Set Coupler Kit for DIY Single Zone and Multizone 24K, 36K & 48K Air Handlers...
$378.00
MRCOOL 50ft Line Set Coupler Kit for DIY Single Zone and Multizone 24K, 36K & 48K Air Handlers - 3/8
MRCOOL 50ft Line Set Coupler Kit for DIY Single Zone and Multizone 24K, 36K & 48K Air Handlers...
$369.00
MRCOOL 25 ft. 1/4 x 1/2 Pre-Charged Quick Connect Line Sets (for 18K Indoor) - R454B - DIY25-1412-O
MRCOOL 25 ft. 1/4 x 1/2 Pre-Charged Quick Connect Line Sets (for 18K Indoor) - R454B - DIY25-1412-O
$272.00
MRCOOL 16 ft. 3/8 x 5/8 Pre-Charged Quick Connect Line Sets (for 24K & 36K Indoor) - R454B - DIY16-3858-O
MRCOOL 16 ft. 3/8 x 5/8 Pre-Charged Quick Connect Line Sets (for 24K & 36K Indoor) - R454B...
$271.00
MRCOOL 25 ft. 1/4 x 3/8 Pre-Charged Quick Connect Line Sets (for 6K 9K & 12K Indoor) - R454B - DIY25-1438-O
MRCOOL 25 ft. 1/4 x 3/8 Pre-Charged Quick Connect Line Sets (for 6K 9K & 12K Indoor) -...
$264.00
MRCOOL 16 ft. 1/4 x 1/2 Pre-Charged Quick Connect Line Sets (for 18K Indoor) - R454B - DIY16-1412-O
MRCOOL 16 ft. 1/4 x 1/2 Pre-Charged Quick Connect Line Sets (for 18K Indoor) - R454B - DIY16-1412-O
$239.00
MRCOOL 16 ft. 1/4 x 3/8 Pre-Charged Quick Connect Line Sets (for 6K 9K & 12K Indoor) - R454B - DIY16-1438-O
MRCOOL 16 ft. 1/4 x 3/8 Pre-Charged Quick Connect Line Sets (for 6K 9K & 12K Indoor) -...
$227.00
MRCOOL LineGuard 4.5
MRCOOL LineGuard 4.5" Complete Line Set Cover Kit - 12 ft
$132.00
MRCOOL Wall Mounting Bracket for 24K, 27K & 36K Mini Split Condensers
MRCOOL Wall Mounting Bracket for 24K, 27K & 36K Mini Split Condensers
$121.00
MRCOOL Flare Line Set Kit designed for Advantage and Olympus Mini Split systems, featuring durable copper tubing for secure connections and optimal performance
MRCOOL Flare Line Set Kit for Advantage and Olympus Mini Split
$120.00
MRCOOL Bluetooth Mini-Stat Thermostat for Ductless Mini Split (Battery, Smartphone App) MTSK02
MRCOOL Bluetooth Mini-Stat Thermostat for Ductless Mini Split (Battery, Smartphone App) MTSK02
$79.84
MRCOOL Wall Mounting Bracket for 9K, 12K & 18K Mini Split Condensers
MRCOOL Wall Mounting Bracket for 9K, 12K & 18K Mini Split Condensers
$77.00