MRCOOL DIY Mini Split - 21,000 BTU 2 Zone Ductless Air Conditioner and Heat Pump with 16 ft. and 35 ft. Install Kit, DIYM218HPW01C02

MRCOOL DIY Mini Split 21,000 BTU 2-Zone Ductless Air Conditioner & Heat Pump with 16 ft. & 35 ft. Install Kit

Model: DIYM218HPW01C02

The 4th Generation MRCOOL DIY Multi-Zone Mini Split System provides an efficient and flexible solution for heating and cooling two separate rooms with different capacity needs. This complete system includes an 18,000 BTU multi-zone condenser, one 9,000 BTU wall-mounted air handler, one 12,000 BTU wall-mounted air handler, and pre-charged Quick Connect® line sets, allowing homeowners to complete installation without specialized tools or professional labor.

With built-in Wi-Fi connectivity, inverter-driven performance, and true DIY convenience, this system is ideal for homes, additions, offices, and multi-room applications where rooms require different BTU capacities.

What’s Included

• MRCOOL DIY Multi-Zone 2-Zone 18K BTU Condenser (4th Gen)
Model: DIY-MULTI2-18HP230C

• MRCOOL DIY 9K BTU Wall-Mounted Air Handler with Enhanced Wi-Fi
Model: DIY-09-HP-WMAH-230C25

• MRCOOL DIY 12K BTU Wall-Mounted Air Handler with Enhanced Wi-Fi
Model: DIY-12-HP-WMAH-230C25

• MRCOOL DIY 16 ft. Pre-Charged Line Set (1/4” x 1/2”)
Model: DIY16-1412

• MRCOOL DIY 35 ft. Pre-Charged Line Set (1/4” x 1/2”)
Model: DIY35-1412C

Remote controls, mounting hardware, smart controller kit, and full installation accessories

Important Capacity Note

When multiple air handlers operate simultaneously, total output will automatically adjust to remain within the 18,000 BTU capacity of the condenser, ensuring safe and efficient system operation at all times.

Condenser Features

• High Efficiency: Achieves up to 21 SEER when paired with compatible MRCOOL DIY air handlers

• Cold-Climate Performance: Delivers reliable heating in outdoor temperatures as low as 5°F

• DIY Installation: Pre-charged Quick Connect® line sets eliminate vacuuming and specialized HVAC tools

• Lifetime Compressor Warranty: Eligible for a limited lifetime compressor warranty with registration through the MRCOOL Care Program

Air Handler Features

9,000 BTU Wall-Mounted Air Handler

• Covers up to 375 sq. ft.

• Operating modes: COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP

• Smart control via Smart HVAC app (iOS & Android)

• Lightweight design with included mounting plate

12,000 BTU Wall-Mounted Air Handler

• Covers up to 500 sq. ft.

• Same versatile operating modes and smart controls

• Compact, wall-mounted design for easy installation

Line Set Details

16 ft. & 35 ft. Pre-Charged Copper Line Sets

• Designed specifically for MRCOOL DIY systems

• Pre-charged with the exact amount of R-410A refrigerant

• One line set required per indoor unit

• Enables true DIY installation without hiring a certified technician

Why Choose MRCOOL DIY?

• Install it yourself and save on labor costs

• Built-in Wi-Fi smart control

• Flexible multi-zone comfort with mixed BTU air handlers

• Reliable performance with industry-leading warranty options

• Ideal for residential and light commercial applications