MRCOOL® DIY 5th Generation Mini-Split Condenser 12,000 BTU 115V - DIY-12-HP-C-115D25-O

MRCOOL® 5th Gen DIY® 12,000 BTU Mini-Split – Simple Comfort, All Year Long

Transform your space with this energy-efficient heating and cooling system designed for rooms between 350–500 sq. ft. The 5th Generation MRCOOL® DIY® Mini-Split offers powerful climate control with features built specifically for easy installation—no special tools, vacuuming, or pro installers required.

The included 25-foot QuickConnect® line set comes pre-charged with environmentally friendly R-454B refrigerant, and the DIYPRO® cable ensures a clean, code-compliant install—even outdoors. Whether you're using the remote, app, or voice commands, controlling your indoor temperature is just a tap or word away.

Why You'll Love It

• DIY Installation, No Guesswork
  America’s top DIY mini split system—built for simple, fast setup without hiring an HVAC technician.

• QuickConnect® Pre-Charged Line Set
  Skip the vacuum pump and refrigerant gauges—just connect and go.

• Greener Refrigerant, Smarter Efficiency
  Runs on low-GWP R-454B refrigerant, reducing environmental impact while delivering energy savings.

• Tough, Flexible DIYPRO® Cable
  Weather-resistant and animal-resistant, this cable replaces traditional conduit for a neater install.

• Hands-Free Comfort
  Control your system with Amazon Alexa, Google Assistant, or the SmartHVAC app on iOS or Android.

• Follow Me Function
  The remote doubles as a mobile thermostat, adjusting airflow based on your actual location for more precise comfort.

• Dry Mode for Dehumidifying
  Helps remove excess humidity from the air without overcooling your space.

• Gold Fin® Protection
  The outdoor condenser is coated for corrosion resistance, ideal for harsh climates or coastal living.

• Warranty You Can Count On
  Includes a lifetime compressor warranty, 7 years on the compressor, and 5 years on parts—all backed by a trusted name in home climate control.

Product Brochure

Installation & Owner's Manual

AHRI Certificate

Efficiency & Energy Rating Guide

Limited Warranty Information

Certified Reliable – Intertek listed (5031495) for tested performance and safety.

Dimensions & Weight

Condenser Dimensions:  30.12" width x 11.93" depth x 21.85" height

Condenser Weight:  65.48 lbs.

Heating & Cooling Performance

• Zones Supported: Single-zone system

• Cooling Output: 12,000 BTU

• Heating Output: 12,000 BTU

• Efficiency Ratings:

  • SEER2: 23.5

  • EER2: 12.5

  • HSPF2 (Region 4): 10.2

  • HSPF2 (Region 5): 7.6

• Recommended Room Size: 350 – 500 sq. ft.

• Outdoor Sound Level: 54 dB(A)

Electrical Specifications

• Voltage: 115V

• Phase: Single-phase

• Frequency: 60 Hz

• Max Breaker Size: 20A

• Minimum Circuit Ampacity: 18A

Refrigerant & Line Set Details

• Type: R-454B (eco-friendly refrigerant)

• Pre-Charged Volume: 30.34 oz

• Liquid Line Diameter: 1/4"

• Suction Line Diameter: 3/8"

• Max Line Set Length: Up to 82 ft.

System Features

• Inverter Technology: DC inverter

• Compressor: High-efficiency rotary

• Fan-Only Mode: Yes

• Quiet Operation Mode: Yes

• Automatic Cooling Function: Yes

• Smart Home Compatibility:  Yes

  • Wi-Fi enabled

  • Works with iOS & Android

  • App control available

• Remote Included: Yes

Warranty & Certifications

• UL Listed, ETL Listed, Energy Star Certified, AHRI Certified
• 7 Years Compressor
• 5 years Parts
• Extended Limited Lifetime Replacement - If the original owner does not register the unit, the warranty defaults to the standard 5 year parts, 7 year compressor warranty
  The original, registered owner must be enrolled in the MrCool Care Program every year in order to qualify for the 7 year full unit replacement for compressor failure and lifetime compressor replacement.

** FREE SHIPPING **

There is a 25% restocking fee on all air units, returns must be requested within 30 days and unused, uninstalled and in original packaging. Accessories are non-returnable.