MRCOOL® DIY 5th Generation Mini-Split Air Handler & Condenser 12,000 BTU 115V - DIY-12-HP-WM-115D25-O
MRCOOL® DIY 5th Gen 12,000 BTU Mini-Split Air Handler – Easy Comfort, All Year Round
Experience powerful, energy-efficient heating and cooling with the MRCOOL® 5th Generation DIY® Mini-Split Air Handler. Perfect for spaces between 350 and 500 sq. ft., this unit is designed for simple, tool-free installation using the 25-ft. pre-charged QuickConnect® line set and DIYPRO® cable—no vacuuming or special tools needed!
No-Hassle DIY Setup
Skip the expensive pro install. This unit is made for homeowners to install with ease—everything you need is included.
QuickConnect® Line Set
Comes pre-charged with R-454B refrigerant, allowing a straightforward, vacuum-free connection that’s clean, fast, and eco-conscious.
Lower Impact, Greater Efficiency
The R-454B refrigerant offers a reduced Global Warming Potential (GWP) compared to traditional R-410A—great for the planet and your power bill.
Tough Outdoor-Ready Design
The included DIYPRO® cable is built to handle harsh weather and prevent damage from critters, replacing the need for rigid conduit.
Smart Comfort at Your Fingertips
Control your system your way—whether it’s with the included remote, the SmartHVAC® app (iOS & Android), or voice commands using Alexa or Google Assistant.
Even, Personalized Cooling
The Follow Me feature tracks the remote’s location to deliver consistent comfort exactly where you are.
Dry Mode for Better Air Quality
Eliminate excess humidity with a built-in dehumidifier function, perfect for muggy climates or allergy relief.
Built to Last
A Gold Fin® corrosion-resistant condenser ensures reliable operation even in salty, coastal air.
Trusted Warranty Protection
Includes:
- Limited Lifetime Warranty
- 7-Year Compressor Coverage
- 5-Year Parts Protection
Safety & Performance Certified
Tested and approved by Intertek (Listing #5031495) for dependable performance and safety.
Efficiency & Energy Rating Guide
What’s Included
- 12,000 BTU Indoor Air Handler
- 12,000 BTU Outdoor Condenser Unit
- 25’ QuickConnect® Line Set
- Remote Control
- User Manual
Certified Reliable – Intertek listed (5031495) for tested performance and safety.
Product Dimensions & Weight
Condenser Dimensions: 30.12" width x 11.93" depth x 21.85" height
Condenser Weight: 65.48 lbs.
Air Handler Dimensions: 31.57" width x 7.44" depth x 11.69" height
Air Handler Weight: 24.91 lbs.
Heating & Cooling Performance
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Zones Supported: Single-zone system
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Cooling Output: 12,000 BTU
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Heating Output: 12,000 BTU
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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.
- Indoor Noise Levels:
- High: 43.0 dB(A)
- Medium: 39.5 / 33.5 dB(A)
- Low / Sleep: 24.0 / 18.0 dB(A)
- 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:
Wi-Fi enabled
- Works with iOS & Android: Yes
- App control: Yes
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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.