MRCOOL® DIY® Select 1st Gen- 12K BTU 115V Mini Split Complete System – Black Air Handler – 17.5 SEER2 Heat Pump – Easy Install (DIYS-12-HP-B-115A11-O) 11.5ft Pre-charged line set

Product Description 

If you want a mini split that performs great and actually looks good in your space, this is one of the best options available right now.

The MRCOOL DIY Select 12K BTU Mini Split Complete System with Black Air Handler (115V) delivers powerful heating and cooling for spaces up to 550 sq ft — while giving you a modern, upgraded look compared to traditional white units.

Built by MRCOOL, this system is designed for true DIY installation. The included Quick Connect® line set comes pre-charged with R-454B refrigerant, meaning there’s no need for vacuum pumps, gauges, or specialized HVAC tools.

The sleek black indoor unit makes this system perfect for garages, offices, studios, and modern interiors where appearance matters just as much as performance.

With 17.5 SEER2 efficiency, you’ll get consistent comfort while keeping energy costs under control.

Control your system from anywhere using the MRCOOL app, or use voice commands with Alexa and Google Assistant.

If you want power, style, and easy installation — this system delivers all three.

KEY FEATURES

✔ Black Wall-Mounted Air Handler (Modern Design)
✔ Complete System (11.5 ft Line Set Included)
✔ True DIY Installation – No HVAC tools required
✔ 115V Power – Easier install than 230V
✔ Heat Pump (Heating + Cooling)
✔ Covers Up to 550 Sq Ft
✔ 17.5 SEER2 Energy Efficient
✔ Smart App + Voice Control
✔ Gold Fin® Protection

TECHNICAL SPECIFICATIONS 

System Specs

• System Type: Mini Split Heat Pump
• Zone: Single Zone
• Cooling Capacity: 12,000 BTU
• Heating Capacity: 12,000 BTU
• SEER2: 17.5
• EER2: 8.5
• HSPF2-4: 9
• Coverage: Up to 550 sq ft
• Refrigerant: R-454B

Electrical Specs

• Voltage: 115V
• Phase: 1
• Frequency: 60 Hz
• Minimum Circuit Ampacity: 19.5A
• Recommended Breaker: 20 Amp
• Max Fuse/Breaker: 20A

Indoor Air Handler (Black)

• Model: DIYS-12-HP-B-WMAH-115A13-O
• Color: Black
• Noise Level: 17.5 – 44.5 dBA
• Dimensions: 31.57” W x 11.61” H x 7.87” D
• Weight: 24.91 lbs
• Fan Motor: DC
• Filter: Reusable
• Smart Control: App + Voice

Outdoor Condenser

• Model: DIYS-12-HP-C-115A11-O
• Compressor: Rotary
• Noise Level: 54 dBA
• Dimensions: 28.35” W x 19.49” H x 10.63” D
• Weight: 54.89 lbs
• Inverter: Yes
• Max Line Length: 75 ft

Line Set

• Included Length: 11.5 ft
• Liquid Line: 1/4”
• Suction Line: 3/8”

BREAKER SIZE 

• Voltage: 115V
• Minimum Circuit Ampacity: 19.5A
• Recommended Breaker Size: 20 Amp

👉 Always size from condenser specs

Warranty Information

The MRCOOL DIY Select 12K BTU System includes:

• 2-Year Compressor Warranty
• 1-Year Parts Warranty
• 1-Year Remote Warranty

Built for long-term reliability and peace of mind.

Why Purchase from MRCOOL DIRECT?

✔ Buy Direct from a Trusted MRCOOL Dealer
✔ Fast Shipping Nationwide
✔ Expert HVAC Support
✔ No Middleman Markups
✔ Access to Latest MRCOOL Products
✔ Trusted by Homeowners & Contractors

👉 When it comes to value and support — MRCOOL DIRECT stands above competitors.

Frequently Asked Questions about the MRCOOL DIY Select 12K BTU Mini Split System

Q: What’s the difference between black and white units?
Performance is the same — black offers a more modern, premium look.

Q: What breaker size do I need?
20 amp breaker on 115V.

Q: Can I install this myself?
Yes — no HVAC tools required.

Q: What size room does it cover?
Up to 550 sq ft.

This MRCOOL DIY 12K BTU 115V mini split complete system is one of the best solutions for homeowners looking for a powerful, energy-efficient, and easy-to-install HVAC system.”