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MRCOOL

MRCOOL Olympus 18,000 BTU 1.5 Ton Ductless Mini-Split Wall Mounted Air Handler - 230V/60Hz

O-18-HP-WMAH-230C-O

18,000 BTU · 208/230V · R-454B

Part of Olympus 4th Gen – Air Handlers

Cooling capacity
18,000 BTU1.5 tons
Power
208/230V15A breaker
Refrigerant
R-454B

$526.00 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

Enjoy peace of mind and reliable comfort with the MRCOOL® OLYMPUS ESTAR® 18k Series air handler, designed to efficiently heat and cool areas up to 800 square feet—making it an ideal choice for large rooms, offices, garages, and more. Thanks to its compact design, installation is fast and straightforward. Control your comfort from anywhere with the MRCOOL® Smart HVAC app, which allows Wi-Fi connectivity for remote access via your smartphone or tablet. For added convenience, the unit also includes a wireless remote control, giving you flexible options to manage your indoor climate with ease. Engineered for energy efficiency, this system features a SEER2 rating of 23.5, EER2 of 12.7, and HSPF2-4 of 10.8, helping you lower your utility costs while staying comfortable year-round. With multiple fan speed settings and whisper-quiet operation at just 49 dB, it delivers powerful performance with minimal noise. Now using R-454B refrigerant, a more eco-friendly choice, this unit supports environmentally conscious living without sacrificing performance. Enjoy seamless control options, including the smartHVAC app, wireless remote, and voice control compatibility with Amazon Alexa and Google Assistant, giving you personalized comfort at your fingertips. Backed by an industry-leading warranty—including a 7-year compressor warranty and 5-year parts warranty—the MRCOOL® OLYMPUS ESTAR® 18k Series air handler offers dependable performance, smart technology, and lasting comfort throughout the seasons.

Documents & manuals

Specifications

Capacity & efficiency
TypeAir handler (indoor unit) — heat pump (heats & cools)
SeriesOlympus 4th Gen
Cooling capacity18,000 BTU
Nominal size1.5 tons
Sound level49.5/45/38/31.5/19.5 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 line1/2"
Physical
Indoor unit / mountingWall
Dimensions (in)40.31 W × 9.69 D × 12.64 H
Weight27.34 lb
Shipping weight36.6 lb
ColorWhite
Certifications, warranty & ordering
Safety listingUL, ETL
Parts warranty5 years
UPC840255587723