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MRCOOL DIY® 5th Gen 18K (230V) One-Way Ceiling Cassette – Model DIYCASSETTE18HP-230D25-O
Regular price $1,440.00 -
MRCOOL DIY® 5th Gen 12K (230V) One-Way Ceiling Cassette – DIYCASSETTE12HP-230D25-O
Regular price $1,421.00 -
MRCOOL DIY® 5th Gen 9K (230V) One-Way Ceiling Cassette – DIYCASSETTE09HP-230D25-O
Regular price $1,410.00 -
MRCOOL DIY® 5th Gen 6K (230V) One-Way Ceiling Cassette – DIYCASSETTE06HP-230D25-O
Regular price $1,312.00
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MRCOOL 50 ft. 3/8 x 5/8 Pre-Charged Quick Connect Line Sets (for 24K & 36K Indoor) w/DIY PRO cable - R454B - DIY50-3858C-O
Description MRCOOL R-454B DIY Line Set (3/8 x 5/8) – For 24K & 36K BTU MRCOOL DIY Indoor Units These MRCOOL DIY line sets are engineered for 24K and 36K BTU indoor units in 5th Gen...Regular price $662.00Regular price $662.00 -
MRCOOL 50 ft. 1/4 x 1/2 Pre-Charged Quick Connect Line Sets w/DIY PRO Cable (for 18K Indoor) - R454B - DIY50-1412C-O
Description MRCOOL R-454B DIY 50 ft Line Set 1/4 x 1/2 – For 18K BTU MRCOOL DIY Indoor Units These MRCOOL DIY line sets are built for seamless compatibility with 18K BTU indoor unit in 5th...Regular price $599.00Regular price $599.00 -
MRCOOL 50 ft. 1/4 x 3/8 Pre-Charged Quick Connect Line Sets (for 6K 9K & 12K Indoor) w/ DIY PRO cable - R454B - DIY50-1438C-O
Description MRCOOL R-454B DIY Line Set (1/4" x 3/8") – For 6K, 9K & 12K BTU MRCOOL DIY Indoor Units These MRCOOL DIY pre-charged line sets are designed for 6K, 9K, and 12K BTU indoor units...Regular price $587.00Regular price $587.00 -
MRCOOL 35 ft. 3/8 x 5/8 Pre-Charged Quick Connect Line Sets (for 24K & 36K Indoor) w/DIY PRO cable - R454B - DIY35-3858C-O
Description MRCOOL R-454B DIY Line Set (3/8 x 5/8) – For 24K & 36K BTU MRCOOL DIY Indoor Units These MRCOOL DIY line sets are engineered for 24K and 36K BTU indoor units in 5th Gen...Regular price $565.00Regular price $565.00 -
MRCOOL DIY 5th Gen Multi-Zone 9k BTU Wall Mount Air Handler DIY-09-HP-WMAH-230D25-O
Description MRCOOL DIY 5th Gen Multi-Zone 9k BTU Wall Mounted Air Handlers The 5th Generation MRCOOL® DIY® 9K BTU 22.5 SEER Ductless Mini-Split Heat Pump is a highly efficient and powerful solution for heating and cooling...Regular price $532.00Regular price $532.00 -
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
Description MRCOOL R-454B DIY Line Set 1/4 x 1/2 – For 18K BTU MRCOOL DIY Indoor Units These MRCOOL DIY line sets are built for seamless compatibility with 18K BTU indoor unit in 5th Gen Multi-Zone...Regular price $510.00Regular price $510.00
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.