MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
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MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)
MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)

MRCOOL DIY Select 12K BTU Ductless Mini Split System with Black Wall Mount Air Handler, 115V, 11.5 Ft DIY Lineset, R454B (DIYS-12-HP-B-115A11-O)

SKU: DIYS-12-HP-B-115A11-O
$1,399.00 $1,819.00

Finish: Black
BTUs
Out of Stock Estimated Ship Date: Late August
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Description

The MRCOOL® DIY® Select 12,000 BTU 115V Ductless Mini-Split Heat Pump System in a sleek matte black finish delivers powerful, energy-efficient heating and cooling for spaces up to 550 square feet, with a 17.5 SEER2 cooling rating and 9.0 HSPF2-4 heating efficiency. Built for true do-it-yourself installation, this complete system pairs the DIYS-12-HP-C-115A11-O outdoor condenser with the DIYS-12-HP-B-WMAH-115A13-O indoor air handler and includes a factory pre-charged 11.5-foot Quick Connect® line set with environmentally friendly R-454B refrigerant — no vacuum pumps, gauges, or HVAC experience required. Smart Wi-Fi control via the MRCOOL® Comfort app, Amazon Alexa and Google Assistant compatibility, Gold Fin® corrosion-resistant coating, and a 2-year compressor / 1-year parts warranty round out a reliable, year-round comfort solution.

Key Features

  • Complete DIY® Mini-Split System: Includes the DIYS-12-HP-C-115A11-O outdoor condenser and DIYS-12-HP-B-WMAH-115A13-O indoor wall-mounted air handler — everything needed for single-zone comfort
  • Powerful Heating & Cooling: 12,000 BTU capacity efficiently conditions spaces up to 550 square feet
  • High-Efficiency Performance: 17.5 SEER2 cooling and 9.0 HSPF2-4 heating ratings for year-round energy savings
  • True DIY® Installation: No specialized tools, HVAC certifications, or prior experience required
  • Pre-Charged Quick Connect® Line Set: 11.5-foot line set factory pre-charged with R-454B refrigerant — no vacuum pump or refrigerant handling needed
  • Eco-Friendly R-454B Refrigerant: Lower global warming potential for environmentally responsible operation
  • 13-Foot DIYPRO® Cable: Replaces traditional electrical conduit while protecting wiring from moisture, pests, and outdoor exposure
  • 115V Power Supply: 1-ton system designed for 115V/60Hz single-phase operation
  • Smart Wi-Fi Control: MRCOOL® Comfort app enables remote temperature control, scheduling, and energy monitoring from anywhere
  • Voice Assistant Compatible: Works with Amazon Alexa and Google Assistant for hands-free control
  • Wireless Remote Included: Convenient on-the-spot adjustments without reaching for your phone
  • Advanced Comfort Modes: Sleep Mode, Dry Mode, Auto Mode, and Fan-Only Mode for tailored indoor comfort
  • Programmable Scheduling: Set custom on/off and temperature schedules to maximize efficiency
  • Gold Fin® Condenser Coating: Enhanced corrosion resistance for durability in humid or coastal environments
  • Inverter Technology: Variable-speed compressor for stable temperatures and reduced energy consumption
  • Reusable Air Filter: Washable filter design reduces ongoing maintenance costs
  • Matte Black Finish: Sleek, modern design that blends seamlessly into a wide range of interior styles
  • Backed by Warranty: 2-year compressor warranty and 1-year parts warranty for added peace of mind
Dimensions & Weight
Condenser Dimensions 28.35 W" x 10.63 D" x 19.49 H"
Air Handler Dimensions 31.57 W" x 7.87 D" x 11.61 H"
Condenser Weight 54.89 lbs
Air Handler Weight 24.91 lbs
Capacity & Performance
Zone Capacity 1
Cooling Capacity 12,000 BTU
SEER2 17.5
EER2 8.5
Outdoor Operating Temperature (Cooling) -13 to 122°F
Heating Capacity 12,000 BTU
HSPF2-4 9
HSPF2-5 6.8
Outdoor Operating Temperature (Heating) -13 to 75°F
Coverage Area Up to 550 sq ft.
Outdoor Noise Level 54 dB(A)
Indoor Noise Level (High / Low) 44.5 / 17.5 dB(A)
Electrical Requirements
Voltage 115V
Phase 1
Cycle 60Hz
Min Circuit Ampacity 19.5A
Max Fuse Breaker 20A
Refrigerant & Piping
Line Set Length 11.5 ft.
Refrigerant Type R-454B
Refrigerant Volume 21.52 oz
Liquid Line Size 1/4"
Suction Line Size 3/8"
Max Line Set Length 75 ft.
Features
Inverter Technology Yes
Wifi Compatibility Yes
App Compatibility Yes
Works with IOS Yes
Works with Android Yes
Remote Control Included Yes
Certifications & Warranty
Warranty 2 Years Compressor / 1 Year Parts

Mini Split FAQ

 

What BTU rating should I choose for my air handler?

  • This depends on the coverage area/room size you are trying to heat/cool
  • An Air Handler's BTU is how powerful the fan is. A higher BTU rating will be able to heat/cool a larger area
Air Handler BTU Coverage Area/Room Size (Sq. Ft.)*
6K
Up to 200 Sq. Ft.
9K
Up to 375 Sq. Ft.
12K Up to 500 Sq. Ft.
18K Up to 750 Sq. Ft.
24k Up to 1,000 Sq. Ft.
36k Up to 1,500 Sq. Ft.

 

*Ceiling height, insulation, and local climate may impact the coverage area. For example, an uninsulated room will require more power than a well insulated room.

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