MRCOOL® DIY® Select 1st Gen- 18K BTU 230V Mini Split Complete System – 17.3 SEER2 Heat Pump – Easy Install – R454B (DIYS-18-HP-230A11-O) 11.5ft Pre-Charged line set

Product Description 

If you need serious heating and cooling power without the cost of professional installation, this is where things step up.

The MRCOOL DIY Select 18K BTU Mini Split Complete System (230V) is built for homeowners who need reliable performance for larger spaces — without dealing with complicated installs or expensive labor.

Designed by MRCOOL, this system is ideal for areas up to 800 sq ft, making it perfect for garages, basements, workshops, larger living spaces, and bonus rooms.

This complete system includes an 11.5 ft pre-charged Quick Connect® line set, eliminating the need for vacuum pumps, gauges, or HVAC tools. Combined with the DIYPRO® cable, installation is faster, cleaner, and designed for real homeowners.

With 17.3 SEER2 efficiency, you get powerful performance while keeping energy usage under control.

Control everything from your phone with the MRCOOL app or use Alexa and Google Assistant for hands-free operation.

If you want more capacity, stronger airflow, and still an easy install — this is the move.

KEY FEATURES

✔ Complete System (11.5 ft Line Set Included)
✔ True DIY Installation – No HVAC tools required
✔ 230V Power – Ideal for higher capacity systems
✔ Heat Pump (Heating + Cooling)
✔ Covers Up to 800 Sq Ft
✔ 17.3 SEER2 Energy Efficient
✔ Smart App + Voice Control
✔ Gold Fin® Corrosion Protection
✔ Built for Larger Spaces

TECHNICAL SPECIFICATIONS

System Specs

• System Type: Mini Split Heat Pump
• Zone: Single Zone
• Cooling Capacity: 17,000 BTU
• Heating Capacity: 18,000 BTU
• SEER2: 17.3
• EER2: 9
• HSPF2-4: 8.5
• HSPF2-5: 6.5
• Coverage Area: Up to 800 sq ft
• Refrigerant: R-454B

Electrical Specs

• Voltage: 208/230V
• Phase: 1
• Frequency: 60 Hz
• Minimum Circuit Ampacity: 15A
• Recommended Breaker: 20 Amp
• Max Fuse/Breaker: 20A

Indoor Air Handler

• Model: DIYS-18-HP-WMAH-230A13-O
• Noise Level: 18.5 – 46.5 dBA
• Dimensions: 38.23” W x 12.64” H x 8.98” D
• Weight: 30.64 lbs
• Fan Motor: DC
• Filter: Reusable
• Smart Features: App + Voice Control

Outdoor Condenser

• Model: DIYS-18-HP-C-230A11-O
• Compressor: Rotary
• Noise Level: 55 dBA
• Dimensions: 30.12” W x 21.85” H x 11.93” D
• Weight: 62.61 lbs
• Inverter: Yes
• Max Line Length: 75 ft

Line Set

• Included Length: 11.5 ft
• Liquid Line: 1/4”
• Suction Line: 1/2”

BREAKER SIZE 

• Voltage: 230V
• Minimum Circuit Ampacity: 15A
• Recommended Breaker Size: 20 Amp

👉 Always size from condenser specs

Warranty Information

The MRCOOL DIY Select 18K BTU System includes:

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

Why Purchase from MRCOOL DIRECT?

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

👉 MRCOOL DIRECT gives you more than just a product — you get reliability and support.

Frequently Asked Questions about the MRCOOL DIY Select 18k BTU Mini Split System

Q: What size space does an 18K mini split cover?
Up to 800 sq ft depending on layout and insulation.

Q: What breaker size is required?
20 amp breaker on a 230V circuit.

Q: Can I install this myself?
Yes — designed for DIY installation.

Q: Is this better than a 12K system?
Yes — this system is built for larger spaces and higher demand.

This MRCOOL DIY 18k 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.”