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MRCOOL

MRCOOL DIY Select 1st Gen - R454B - 18K BTU 230V White Wall Mounted Air Handler - with 13' Communication Cable

DIYS-18-HP-WMAH-230A13-O

18,000 BTU · 208/230V · R-454B

Part of DIY Select – Air Handlers

Cooling capacity
18,000 BTU1.5 tons
Room size
800 sq ft
Power
208/230V15A breaker
Refrigerant
R-454B
Install
DIYPre-charged, no vacuum

$482.86 each

Not sure about the size? Use the BTU sizing calculator, or call us and we'll size it with you. This is a DIY system: the pre-charged line set connects without a vacuum pump or gauges.

Build a multi-zone system with this air handler →

Distributor pricing and stock: call 678-467-5515 or email sales@discountkings.net.

About this product

The MRCOOL® DIY® Select 18K BTU 230V Ductless Mini-Split Heat Pump Air Handler delivers efficient, reliable heating and cooling for spaces up to 800 square feet. Ideal for garages, attics, basements, and bonus rooms, it provides consistent year-round comfort with simple operation and high efficiency. Designed within the MRCOOL® DIY® lineup, this system supports true do-it-yourself installation. The compatible Quick Connect® line set comes factory pre-charged with environmentally friendly R-454B, eliminating the need for vacuum pumps or refrigerant handling. Additionally, the included 13-foot DIYPRO® cable replaces traditional electrical conduit, streamlining installation while safeguarding wiring from moisture, pests, and everyday wear. Control your comfort easily with the included wireless remote or the MRCOOL® Comfort app, which allows you to adjust temperatures, set schedules, and monitor energy usage from anywhere. Compatibility with Amazon Alexa and Google Assistant enables convenient hands-free voice control. Advanced features like Dry Mode, Sleep Mode, Auto Mode, and programmable scheduling enhance comfort while optimizing efficiency. A Gold Fin® condenser coating adds corrosion resistance, making the system well-suited for humid or coastal environments. The MRCOOL® DIY® Select 18K includes a 2-year compressor warranty and 1-year parts warranty.

Documents & manuals

Specifications

Capacity & efficiency
TypeAir handler (indoor unit) — heat pump (heats & cools)
SeriesDIY Select
Cooling capacity18,000 BTU
Nominal size1.5 tons
ZonesSingle zone
Coverage800 sq. ft.
Airflow470.9 / 400.2 / 329.6 / 270.8 CFM
Sound level18.5–46.5 dBA
Electrical
Voltage208/230V
Phase1-phase
Min. circuit ampacity (MCA)3 A
Max. breaker (MOP)15 A
Wi-Fi / app controlYes
Refrigerant & line set
RefrigerantR-454B
Liquid line1/4"
Suction line1/2"
InstallationDIY — pre-charged quick-connect line set, no vacuum pump needed
Physical
Dimensions (in)38.23 W × 8.98 D × 12.64 H
Weight30.64 lb
Shipping weight44.97 lb
ColorWhite
Certifications, warranty & ordering
Parts warranty1 years
UPC840255595636