•

MRCOOL’s 4th Generation DIY 12K Mini Split Heat Pump is the most advanced version of the only ductless system on the market specifically engineered for easy do-it-yourself installation. It's a perfect climate control solution for garages, workshops, sunrooms, RVs, trailers, or any space that lacks ductwork.

This upgraded 12,000 BTU model delivers enhanced efficiency, increased versatility, and improved ease of installation. No special tools or professional training are required. It offers better heating performance, a flexible conduit for communication wires, and even includes an optional lifetime compressor warranty for peace of mind. The design ensures nearly anyone can install the system in just a few hours—saving you both time and money. Plus, ENERGY STAR® certification means potential rebates and ongoing energy savings.

Available MRCOOL DIY Single Zone Mini Split Sizes:

  • 12,000 BTU – Covers up to 550 sq. ft.

  • 18,000 BTU – Covers up to 800 sq. ft.

  • 24,000 BTU – Covers up to 1,100 sq. ft.

  • 36,000 BTU – Covers up to 1,500 sq. ft.

When properly sized, the MRCOOL DIY 12K system is ideal for spaces between 500–600 square feet, offering unmatched value and efficiency. It comes equipped with the latest SmartHVAC Wi-Fi module, providing seamless setup and compatibility with Amazon Alexa, Google Assistant, and smart devices running iOS or Android.

What’s Included with the MRCOOL DIY 12K 22 SEER 115V System:

  • 25 ft. pre-charged line set with control wire for DIY-friendly installation

  • Remote control for effortless temperature management

  • SmartHVAC Wi-Fi control module (compatible with Apple, Android, Alexa, and Google Assistant)

  • ENERGY STAR® certified for energy-efficient operation

  • 7-year compressor warranty (with optional lifetime warranty) and 5-year parts warranty

  • DC inverter and variable-speed compressor to reduce energy costs

  • Refrigerant leak detection for long-term reliability

  • Gold Fin condenser coating for corrosion resistance—ideal for coastal environments

If you're looking for efficient, affordable comfort without the need to hire an installer, the MRCOOL DIY Series offers one of the best solutions available today.

BRAND NAME MRCOOL
SERIES DIY 4th Gen E STAR
MODEL DIY-12-HP-WM-115C25
GTIN 00810035935150
UPC 810035935150
UNIT TYPE Mini Split
SHORT DESCRIPTION MrCool E Star DIY 4th Gen 12k BTU Ductless Mini-Split Heat Pump Complete System 115V/60Hz
LONG DESCRIPTION Introducing the latest in home comfort technology, with the 4th Generation MrCool DIY 12K BTU, 22 SEER Ductless Heat Pump System. This powerful single-zone system has the capability of heating and cooling an area up to 500 sq. ft. It comes complete with a 12K condenser, 12K air handler, and a 25 ft. line set pre-charged with R-410A refrigerant. The line set also has quick connectors which require no special tools, equipment, or training to install. The MrCool DIY system also includes many features that make it stand out among its competitors.The first of which is its ability to achieve an outstanding 22 SEER efficiency rating allowing it to be Energy Star certified. This system has many operating modes to select from to suit the needs of the user, including HEAT, COOL, DRY (dehumidification), and SLEEP. It also has the Follow Me function that adjusts the temperature of the room based on the temperature being read by the hand-held remote control. The DIY features the convenience of being able to operate its modes and functions with your smartphone by using the Smart HVAC app. The MrCool mini split is the only system on the market to offer a limited lifetime compressor warranty.
BULLET 1 Up to 22 SEER
BULLET 2 Gold Fin® condenser: corrosion-resistant coastal living - don't worry, our condenser is built to resist long term corrosion
BULLET 3 Variable-speed DC inverter compressor technology cuts operating costs
BULLET 4 R-410A environmentally friendly refrigerant
BULLET 5 Standard 7-year compressor/5-year parts warranty; register for limited lifetime compressor warranty
SEER 22
EER 12.5
HSPF hspf4/hspf5 : 11.5/9
CFM 305.88/211.76/147.06
TONNAGE 1
COOLING CAPACITY 12000 BTU
HEATING CAPACITY 12000 BTU
VOLTAGE 115 V
PHASE 1
CYCLE 60 Hz
MAX FUSE BREAKER 25 A
MIN CIRCUIT AMPACITY 19 A
COLOR White
COLOR FAMILY White
RATED LOAD 0.53 A
MAX COVERAGE AREA Up to 500 sqft
ZONE CAPACITY 1
REFRIGERANT TYPE R-410A
REFRIGERANT VOLUME 38.10 oz
DECIBEL RATING 37/31/23.5
DECIBEL RATING LOW 23.5 dBA
DECIBEL RATING HIGH 37 dBA
OSCILLATION 4-W
INVERTER Yes
MIN AMBIENT COOL -13F - 122F
MIN AMBIENT HEAT -13F - 75F
LINE SET LENGTH 25ft
MAX LINESET LENGTH 82.02 ft
LIQUID LINE SIZE 1/4 in
SUCTION LINE SIZE 1/2 in
COMPRESSOR MOTOR TYPE Rotary
CONDENSER FAN MOTOR RPM 850/600
BLOWER MOTOR RPM 1100/850/700
AUXILIARY HEATER INCLUDED No
AUXILIARY HEATER AVAILABLE No
FAN ONLY OPTION Yes
QUIET MODE Yes
AUTO COOL Yes
WIFI COMPATIBILITY Yes
APP COMPATIBILITY Yes
WORKS WITH IOS Yes
WORKS WITH ANDROID Yes
REMOTE CONTROL INCLUDED Yes
UL LISTED Yes
ENERGY STAR CERTIFIED Yes
AHRI CERTIFIED Yes
REGISTERED WARRANTY Limited Lifetime Compressor
BASE WARRANTY 5-year Parts/7-year Compressor
BASE PARTS WARRANTY 5-year Parts
REGISTERED COMPRESSOR WARRANTY Limited Lifetime Compressor
BASE COMPRESSOR WARRANTY 7-year Compressor
HAS BATTERIES Yes
CONTAINS ELECTRONICS Yes
CONTAINS CHEMICALS Yes
CONTAINS AEROSOL Yes
CONTAINS COMPRESSED GAS Yes
PROPOSITION 65 WARNING Yes
RESTRICTED STATES GU;PR;VI
CONDENSER DEPTH 11.93 in
CONDENSER HEIGHT 21.85 in
CONDENSER WIDTH 30.12 in
CONDENSER WEIGHT 65.70 lbs
AIR HANDLER DEPTH 7.44 in
AIR HANDLER HEIGHT 11.69 in
AIR HANDLER WIDTH 31.57 in
AIR HANDLER WEIGHT 24.03 lbs

 

Brochure for the DIY 4th Gen 12K Single Zone Mini Split

Install Manual for the DIY 4th Gen 12K Single Zone Mini Split

MRCOOL

MRCOOL | DIY 12K 12,000 BTU 22 SEER 4th Gen Ductless Mini Split Air Conditioner and Heat Pump 115V | DIY-12-HP-WM-115C25

SKU DIY-12-HP-WM-115C25
$2,498.00
$1,738.00

MRCOOL’s 4th Generation DIY 12K Mini Split Heat Pump is the most advanced version of the only ductless system on the market specifically engineered for easy do-it-yourself installation. It's a perfect climate control solution for garages, workshops, sunrooms, RVs, trailers, or any space that lacks ductwork.

This upgraded 12,000 BTU model delivers enhanced efficiency, increased versatility, and improved ease of installation. No special tools or professional training are required. It offers better heating performance, a flexible conduit for communication wires, and even includes an optional lifetime compressor warranty for peace of mind. The design ensures nearly anyone can install the system in just a few hours—saving you both time and money. Plus, ENERGY STAR® certification means potential rebates and ongoing energy savings.

Available MRCOOL DIY Single Zone Mini Split Sizes:

  • 12,000 BTU – Covers up to 550 sq. ft.

  • 18,000 BTU – Covers up to 800 sq. ft.

  • 24,000 BTU – Covers up to 1,100 sq. ft.

  • 36,000 BTU – Covers up to 1,500 sq. ft.

When properly sized, the MRCOOL DIY 12K system is ideal for spaces between 500–600 square feet, offering unmatched value and efficiency. It comes equipped with the latest SmartHVAC Wi-Fi module, providing seamless setup and compatibility with Amazon Alexa, Google Assistant, and smart devices running iOS or Android.

What’s Included with the MRCOOL DIY 12K 22 SEER 115V System:

  • 25 ft. pre-charged line set with control wire for DIY-friendly installation

  • Remote control for effortless temperature management

  • SmartHVAC Wi-Fi control module (compatible with Apple, Android, Alexa, and Google Assistant)

  • ENERGY STAR® certified for energy-efficient operation

  • 7-year compressor warranty (with optional lifetime warranty) and 5-year parts warranty

  • DC inverter and variable-speed compressor to reduce energy costs

  • Refrigerant leak detection for long-term reliability

  • Gold Fin condenser coating for corrosion resistance—ideal for coastal environments

If you're looking for efficient, affordable comfort without the need to hire an installer, the MRCOOL DIY Series offers one of the best solutions available today.

BRAND NAME MRCOOL
SERIES DIY 4th Gen E STAR
MODEL DIY-12-HP-WM-115C25
GTIN 00810035935150
UPC 810035935150
UNIT TYPE Mini Split
SHORT DESCRIPTION MrCool E Star DIY 4th Gen 12k BTU Ductless Mini-Split Heat Pump Complete System 115V/60Hz
LONG DESCRIPTION Introducing the latest in home comfort technology, with the 4th Generation MrCool DIY 12K BTU, 22 SEER Ductless Heat Pump System. This powerful single-zone system has the capability of heating and cooling an area up to 500 sq. ft. It comes complete with a 12K condenser, 12K air handler, and a 25 ft. line set pre-charged with R-410A refrigerant. The line set also has quick connectors which require no special tools, equipment, or training to install. The MrCool DIY system also includes many features that make it stand out among its competitors.The first of which is its ability to achieve an outstanding 22 SEER efficiency rating allowing it to be Energy Star certified. This system has many operating modes to select from to suit the needs of the user, including HEAT, COOL, DRY (dehumidification), and SLEEP. It also has the Follow Me function that adjusts the temperature of the room based on the temperature being read by the hand-held remote control. The DIY features the convenience of being able to operate its modes and functions with your smartphone by using the Smart HVAC app. The MrCool mini split is the only system on the market to offer a limited lifetime compressor warranty.
BULLET 1 Up to 22 SEER
BULLET 2 Gold Fin® condenser: corrosion-resistant coastal living - don't worry, our condenser is built to resist long term corrosion
BULLET 3 Variable-speed DC inverter compressor technology cuts operating costs
BULLET 4 R-410A environmentally friendly refrigerant
BULLET 5 Standard 7-year compressor/5-year parts warranty; register for limited lifetime compressor warranty
SEER 22
EER 12.5
HSPF hspf4/hspf5 : 11.5/9
CFM 305.88/211.76/147.06
TONNAGE 1
COOLING CAPACITY 12000 BTU
HEATING CAPACITY 12000 BTU
VOLTAGE 115 V
PHASE 1
CYCLE 60 Hz
MAX FUSE BREAKER 25 A
MIN CIRCUIT AMPACITY 19 A
COLOR White
COLOR FAMILY White
RATED LOAD 0.53 A
MAX COVERAGE AREA Up to 500 sqft
ZONE CAPACITY 1
REFRIGERANT TYPE R-410A
REFRIGERANT VOLUME 38.10 oz
DECIBEL RATING 37/31/23.5
DECIBEL RATING LOW 23.5 dBA
DECIBEL RATING HIGH 37 dBA
OSCILLATION 4-W
INVERTER Yes
MIN AMBIENT COOL -13F - 122F
MIN AMBIENT HEAT -13F - 75F
LINE SET LENGTH 25ft
MAX LINESET LENGTH 82.02 ft
LIQUID LINE SIZE 1/4 in
SUCTION LINE SIZE 1/2 in
COMPRESSOR MOTOR TYPE Rotary
CONDENSER FAN MOTOR RPM 850/600
BLOWER MOTOR RPM 1100/850/700
AUXILIARY HEATER INCLUDED No
AUXILIARY HEATER AVAILABLE No
FAN ONLY OPTION Yes
QUIET MODE Yes
AUTO COOL Yes
WIFI COMPATIBILITY Yes
APP COMPATIBILITY Yes
WORKS WITH IOS Yes
WORKS WITH ANDROID Yes
REMOTE CONTROL INCLUDED Yes
UL LISTED Yes
ENERGY STAR CERTIFIED Yes
AHRI CERTIFIED Yes
REGISTERED WARRANTY Limited Lifetime Compressor
BASE WARRANTY 5-year Parts/7-year Compressor
BASE PARTS WARRANTY 5-year Parts
REGISTERED COMPRESSOR WARRANTY Limited Lifetime Compressor
BASE COMPRESSOR WARRANTY 7-year Compressor
HAS BATTERIES Yes
CONTAINS ELECTRONICS Yes
CONTAINS CHEMICALS Yes
CONTAINS AEROSOL Yes
CONTAINS COMPRESSED GAS Yes
PROPOSITION 65 WARNING Yes
RESTRICTED STATES GU;PR;VI
CONDENSER DEPTH 11.93 in
CONDENSER HEIGHT 21.85 in
CONDENSER WIDTH 30.12 in
CONDENSER WEIGHT 65.70 lbs
AIR HANDLER DEPTH 7.44 in
AIR HANDLER HEIGHT 11.69 in
AIR HANDLER WIDTH 31.57 in
AIR HANDLER WEIGHT 24.03 lbs

 

Brochure for the DIY 4th Gen 12K Single Zone Mini Split

Install Manual for the DIY 4th Gen 12K Single Zone Mini Split
$2,498.00
$1,738.00

Similar Products

Frequently Bought Together

Total price$9,359.24

Customers also bought

    Complementary products