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MRCOOL

MRCOOL Olympus 12,000 BTU 1 Ton Ductless Mini-Split Wall Mounted Air Handler - 230V/60Hz

O-12-HP-WMAH-230C-O

12,000 BTU · 208/230V · R-454B

Part of Olympus 4th Gen – Air Handlers

Cooling capacity
12,000 BTU1 ton
Room size
Up to 550
Power
208/230V15A breaker
Refrigerant
R-454B

$401.00 each

Not sure about the size? Use the BTU sizing calculator, or call us and we'll size it with you. Professional installation by a licensed HVAC contractor is required for the manufacturer warranty.

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

Experience dependable heating and cooling with the MRCOOL® OLYMPUS ESTAR® 12k Series air handler, designed for spaces up to 550 square feet—perfect for bedrooms, home offices, garages, and more. Its compact design makes installation quick and hassle-free for your technician. Stay in control from anywhere with the MRCOOL® Smart HVAC app, which connects via Wi-Fi to your smartphone or tablet. Prefer a more hands-on approach? Use the included remote control for simple and convenient operation. Engineered for energy efficiency, this unit delivers strong performance with a SEER2 rating of 25.5, EER2 of 13, and HSPF2-4 of 10.6—helping you reduce energy consumption and save on utility costs. A variety of indoor fan speeds ensures optimal comfort, while its whisper-quiet operation at just 46 dB keeps noise to a minimum. Now using R-454B refrigerant, an environmentally friendly option, this system supports a greener future without compromising performance. Enjoy multiple control options, including wireless remote access, the smartHVAC app, and voice control compatibility with Amazon Alexa and Google Assistant—giving you the flexibility to adjust your comfort your way. Backed by an industry-leading warranty, including a 7-year compressor coverage and a 5-year parts warranty, the MRCOOL® OLYMPUS ESTAR® 12k Series offers advanced features, quiet operation, and year-round comfort you can count on.

Documents & manuals

Specifications

Capacity & efficiency
TypeAir handler (indoor unit) — heat pump (heats & cools)
SeriesOlympus 4th Gen
Cooling capacity12,000 BTU
Nominal size1 ton
CoverageUp to 550
Sound level47/36.5/32.5/22/19.5 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 line3/8"
Physical
Indoor unit / mountingWall
Dimensions (in)33.74 W × 9.09 D × 11.81 H
Weight22.93 lb
Shipping weight29.32 lb
ColorWhite
Certifications, warranty & ordering
Safety listingUL, ETL
Parts warranty5 years
UPC840255587716