MRCOOL | DIY Select | 12K BTU 115V System
MRCOOL DIY Select R454B 12,000 BTU 115V Ductless Mini-Split Heat Pump with Wall Mounted Air Handler, Condenser, Wi-Fi, and 11.5 ft Install Kit
Summary
The MRCOOL® DIY® Select 12K BTU 115V Ductless Mini-Split Heat Pump System delivers efficient heating and cooling for attics, garages, home offices, studios, and similar spaces up to 550 sq. ft. This single-zone system pairs a white wall mounted air handler with a 115V heat pump condenser and includes an 11.5 ft Quick Connect® installation kit.
Built as part of the MRCOOL® DIY® lineup, this system is designed for true do-it-yourself installation. The compatible Quick Connect® line set arrives factory pre-charged with R-454B refrigerant, helping eliminate the need for vacuum pumps or refrigerant handling. The included 13 ft DIYPRO® communication cable also simplifies setup by replacing traditional electrical conduit while helping protect wiring from moisture, pests, and everyday wear.
Comfort control is simple with the included wireless remote or the MRCOOL® Comfort app. Users can adjust temperatures, create schedules, and monitor energy usage from anywhere. Compatibility with Amazon Alexa and Google Assistant adds hands-free convenience, while Dry Mode, Sleep Mode, Auto Mode, fan-only operation, and programmable scheduling help maintain consistent comfort and efficiency.
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12,000 BTU Cooling
12,000 BTU Heating
17.5 SEER2
115V
R-454B Refrigerant
Up to 550 sq. ft.
11.5 ft Install Kit
13 ft Communication Cable
Wi-Fi Compatible
AHRI Certified
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Highlights
- Complete 12K BTU single-zone ductless mini-split heat pump system.
- Designed for spaces up to 550 sq. ft.
- 115V operation for targeted heating and cooling applications.
- 17.5 SEER2 cooling efficiency and 9.0 HSPF2-4 heating efficiency.
- Includes 11.5 ft Quick Connect® line set pre-charged with R-454B refrigerant.
- Includes 13 ft DIYPRO® communication cable.
- Wireless remote included for simple room control.
- MRCOOL® Comfort app compatible with iOS and Android devices.
- Works with Amazon Alexa and Google Assistant for voice control.
- Quiet indoor operation, as low as 17.5 dB(A).
- Gold Fin® condenser coating helps resist corrosion in humid or coastal environments.
Key Specs
SeriesDIY Select
System TypeSingle Zone
Cooling12,000 BTU
Heating12,000 BTU
Voltage115V
CoverageUp to 550 sq. ft.
SEER217.5
Line Set11.5 ft Included
What's Included
- MRCOOL® DIY® Select 12K BTU 115V White Wall Mounted Air Handler, model DIYS-12-HP-WMAH-115A13-O
- MRCOOL® DIY® Select 12K BTU 115V Heat Pump Condenser, model DIYS-12-HP-C-115A11-O
- 11.5 ft Quick Connect® installation kit with factory pre-charged R-454B line set
- 13 ft DIYPRO® communication cable
- Wireless remote control with batteries
- Installation, remote, service, warranty, AHRI, and Energy Guide documentation
Warranty
- 1-year parts warranty
- 2-year compressor warranty
- 1-year remote warranty
Warranty terms, registration requirements, and coverage limitations are controlled by MRCOOL®. Review the warranty document before installation.
Air Handler Technical Information
Model Number: DIYS-12-HP-WMAH-115A13-O
| Brand Name | MRCOOL |
| Series | DIY Select |
| Unit Type | Mini-Split |
| Equipment Type | Air Handler |
| Model | DIYS-12-HP-WMAH-115A13-O |
| GTIN | 00840255595599 |
| UPC | 840255595599 |
| Short Description | DIY Select 1st Gen R454B 12K BTU 115V White Wall Mounted Air Handler with 13 ft Communication Cable |
| Tonnage | 1 Ton |
| Voltage | 115V |
| Phase | 1 |
| Cycle | 60 Hz |
| Max Fuse Breaker | 15A |
| Min Circuit Ampacity | 3A |
| Color | White |
| Max Coverage Area | 550 sq. ft. |
| Zone Capacity | 1 |
| Refrigerant Type | R-454B |
| Decibel Rating Low | 17.5 dB(A) |
| Decibel Rating High | 44.5 dB(A) |
| Liquid Line Size | 1/4" |
| Suction Line Size | 3/8" |
| Blower Motor Type | DC |
| Blower Motor RPM | 850 / 750 / 450 |
| Filter Type | Reusable |
| Adjustable Thermostat | Yes |
| Fan Only Option | Yes |
| Sleep Mode | Yes |
| Auto Cool | Yes |
| Wi-Fi Compatibility | Yes |
| App Compatibility | Yes |
| Works with iOS | Yes |
| Works with Android | Yes |
| Remote Control Included | Yes |
| Base Warranty | 1 Year Parts |
| Base Parts Warranty | 1 Year Parts |
| Base Remote Warranty | 1 Year |
| Has Batteries | Yes |
| Contains Electronics | Yes |
| Contains Chemicals | Yes |
| Contains Compressed Gas | Yes |
| Proposition 65 Warning | Yes |
| Net Dimensions | 31.57"W x 11.61"H x 7.87"D |
| Net Weight | 24.91 lbs |
| Gross Dimensions | 36.02"W x 16.34"H x 13.97"D |
| Gross Weight | 35.71 lbs |
Condenser Technical Information
Model Number: DIYS-12-HP-C-115A11-O
| Brand Name | MRCOOL |
| Series | DIY Select |
| Unit Type | Mini-Split |
| Equipment Type | Condenser |
| Model | DIYS-12-HP-C-115A11-O |
| GTIN | 00840255595674 |
| UPC | 840255595674 |
| Short Description | DIY Select 1st Gen R454B 12K BTU 115V Condenser with 11 ft Install Kit |
| SEER2 | 17.5 |
| EER2 | 8.5 |
| HSPF2-4 | 9.0 |
| HSPF2-5 | 6.8 |
| Tonnage | 1 Ton |
| Cooling Capacity | 12,000 BTU |
| Heating Capacity | 12,000 BTU |
| Voltage | 115V |
| Phase | 1 |
| Cycle | 60 Hz |
| Max Fuse Breaker | 20A |
| Min Circuit Ampacity | 19.5A |
| Color | White |
| Zone Capacity | 1 |
| Refrigerant Type | R-454B |
| Refrigerant Volume | 21.52 oz |
| Decibel Rating | 54 dB(A) |
| Inverter | Yes |
| Line Set Included | Yes |
| Line Set Length | 11.5 ft |
| Max Line Set Length | 75 ft |
| Liquid Line Size | 1/4" |
| Suction Line Size | 3/8" |
| Compressor Motor Type | Rotary |
| Condenser Fan Motor Type | DC |
| Condenser Fan Motor RPM | 800 / 700 / 600 |
| Metering Device | EEV |
| UL Listed | Yes |
| CSA Listed | Yes |
| ETL Listed | Yes |
| Energy Star Certified | No |
| AHRI Certified | Yes |
| Base Warranty | 1 Year Parts, 2 Years Compressor |
| Base Parts Warranty | 1 Year Parts |
| Base Compressor Warranty | 2 Years Compressor |
| Contains Electronics | Yes |
| Contains Chemicals | Yes |
| Contains Compressed Gas | Yes |
| Proposition 65 Warning | Yes |
| Net Dimensions | 28.35"W x 19.49"H x 10.63"D |
| Net Weight | 54.89 lbs |
| Gross Dimensions | 36.22"W x 27.36"H x 16.54"D |
| Gross Weight | 67.24 lbs |
Documents & Downloads
| Brochure | Open Brochure |
| Install Manual | Open Install Manual |
| Remote Manual | Open Remote Manual |
| Service Manual | Open Service Manual |
| Warranty Document | Open Warranty Document |
| French Install Manual | Open French Install Manual |
| French Remote Manual | Open French Remote Manual |
| French Warranty Document | Open French Warranty Document |
| Spanish Install Manual | Open Spanish Install Manual |
| Spanish Remote Manual | Open Spanish Remote Manual |
| Spanish Warranty | Open Spanish Warranty |
| AHRI Certificates | Open AHRI Certificates |
| Energy Guide Certificates | Open Energy Guide Certificates |
Important
- This is a complete single-zone system intended for one indoor air handler and one outdoor condenser.
- The condenser requires 115V, single-phase power, with 19.5A minimum circuit ampacity and a 20A max fuse breaker.
- The air handler lists 115V, single-phase power, with 3A minimum circuit ampacity and a 15A max fuse breaker.
- Electrical work and code compliance may require a licensed electrician depending on local requirements.
- The included line set is 11.5 ft. The condenser supports a maximum line set length of 75 ft.
- This condenser is AHRI certified, but it is not listed as Energy Star certified.
- This product contains electronics, chemicals, compressed gas, and carries a Proposition 65 warning.
FAQs
```What size room is this system designed for?
This 12K BTU system is designed for spaces up to 550 sq. ft., such as attics, garages, home offices, studios, and similar-sized rooms.
Is the installation kit included?
Yes. This bundle includes an 11.5 ft Quick Connect® install kit with a factory pre-charged R-454B line set.
Does this system require refrigerant handling?
The Quick Connect® line set is factory pre-charged with R-454B refrigerant, helping simplify installation and reduce the need for traditional vacuum pump and refrigerant handling steps.
Can I control it from my phone?
Yes. The system is compatible with the MRCOOL® Comfort app for iOS and Android devices. It also works with Amazon Alexa and Google Assistant.
What warranty does it include?
The system includes a 1-year parts warranty and a 2-year compressor warranty. The remote warranty is listed as 1 year.
What electrical service does the condenser require?
The condenser is 115V, single phase, 60 Hz, with a 19.5A minimum circuit ampacity and 20A max fuse breaker.
