Mrcool Olympus 4th Gen Air Handlers O-18-HP-WMAH-230C-O wall-mounted ductless mini-split indoor unit with modern front panel and airflow vents

Mrcool Olympus 4th Gen Air Handlers O-18-HP-WMAH-230C-O angled view of compact air handler showing vent louvers and sleek design

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Mrcool Olympus 4th Gen Air Handlers O-18-HP-WMAH-230C-O

Name: Mrcool Olympus 4th Gen Air Handlers O-18-HP-WMAH-230C-O
Brand: MRCOOL
SKU: Olympus O-18-HP-WMAH-230C-O
Price: 526.00 USD
Availability: InStock

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SKU: Olympus O-18-HP-WMAH-230C-O

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18K BTU indoor air handler, part of MRCOOL's professional-install Olympus line
Runs on 230V power
Wi-Fi app control, Alexa/Google compatible
Pairs with the matching Olympus 18K single-zone condenser
Meant for professional installation, not the DIY line

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*Please Note: This timeline is an estimate. Certain products may require an additional 1 week for manufacturing. Please speak with your sales rep, Matthew, for official details and confirmation before placing your order.

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High Capacity • Smart Wi-Fi Control • Quiet Performance

MRCOOL Olympus 4th Gen Air Handlers O-18-HP-WMAH-230C-O

The MRCOOL Olympus 4th Gen Air Handlers O-18-HP-WMAH-230C-O is a powerful 18,000 BTU (1.5 ton) ductless mini-split indoor unit designed to efficiently heat and cool larger spaces up to 800 square feet. Engineered for performance and efficiency, this system delivers strong output with SEER2 23.5, EER2 12.7, and HSPF2-4 10.8 ratings, helping reduce energy consumption while maintaining consistent indoor comfort. Featuring integrated Wi-Fi, smart app control, and compatibility with Amazon Alexa and Google Assistant, this unit provides advanced, user-friendly climate control with maximum flexibility.

MRCOOL Olympus 4th Gen Air Handlers O-18-HP-WMAH-230C-O Applications

Large residential rooms, living areas, and open-concept spaces up to 800 sq ft
Garages, workshops, and converted living spaces
Home offices and studios requiring powerful yet quiet climate control
Light commercial environments with higher capacity demands
Multi-zone HVAC systems paired with compatible MRCOOL Olympus condensers

Designed for larger zones that require higher BTU output without sacrificing efficiency or quiet operation.

MRCOOL Olympus 4th Gen Air Handlers O-18-HP-WMAH-230C-O Specifications

Brand	MRCOOL
Series	Olympus 4th Gen Air Handlers
Model	O-18-HP-WMAH-230C-O
Unit Type	Mini-Split (Wall Mounted)
Tonnage	1.5 Ton
Cooling Capacity	18,000 BTU
Voltage	208/230V, 1 Phase, 60Hz
Max Fuse Breaker	15 A
Minimum Circuit Ampacity	3 A
Coverage Area	Up to 800 sq ft
Refrigerant	R-454B (Eco-Friendly)
Sound Level Range	19.5 – 49.5 dBA
Fan Speeds	5 Variable Speeds
Liquid Line Size	1/4"
Suction Line Size	1/2"
Dimensions (WxHxD)	40.31" × 12.64" × 9.69"
Net Weight	27.34 lbs

MRCOOL Olympus 4th Gen Air Handlers O-18-HP-WMAH-230C-O Performance & Features

High-capacity performance with 18,000 BTU output for larger areas.
Energy-efficient operation with SEER2 23.5, EER2 12.7, and HSPF2-4 10.8 ratings.
Ultra-quiet operation as low as 19.5 dBA for minimal noise disturbance.
Smart HVAC app control for remote access via iOS and Android devices.
Voice assistant compatibility with Amazon Alexa and Google Assistant.
5-speed variable fan motor provides customizable airflow and comfort levels.
Oscillating louvers ensure even distribution of conditioned air.
Reusable air filter simplifies maintenance and improves indoor air quality.
Multiple operating modes including Auto Cool, Sleep Mode, and Fan Only.
Eco-friendly R-454B refrigerant reduces environmental impact while maintaining performance.

MRCOOL Olympus 4th Gen Air Handlers O-18-HP-WMAH-230C-O System Compatibility

Compatible with MRCOOL Olympus outdoor units:
O-ES-18-HP-C-230C-O1
MULTI4-27HP230C-O
MULTI5-36HP230C-O
MULTI6-48HP230C-O

Designed for seamless integration into multi-zone systems for flexible, room-by-room climate control.

MRCOOL Olympus 4th Gen Air Handlers O-18-HP-WMAH-230C-O Certifications & Warranty

UL Listed, CSA Listed, and ETL Listed for safety compliance
5-Year Parts Warranty
7-Year Compressor Warranty (when paired system)
Limited Lifetime Warranty coverage
Remote control included with 5-year warranty
California Proposition 65 compliant

Why Choose the MRCOOL Olympus 4th Gen Air Handlers O-18-HP-WMAH-230C-O

High-capacity output ideal for larger spaces
Advanced smart control with Wi-Fi and voice integration
Quiet operation suitable for residential and work environments
Energy-efficient performance to reduce operating costs
Reliable comfort backed by strong manufacturer warranties

The MRCOOL Olympus 4th Gen Air Handlers O-18-HP-WMAH-230C-O delivers powerful, efficient, and intelligent climate control for larger spaces, combining performance, convenience, and reliability in one advanced system.

Key Information

Order Cutoff Time: 2:00 PM EST
Order Handling Time: 1–3 business days (Monday–Friday)
Transit Time: 1–7 business days (Monday–Friday)
Total Estimated Delivery Time: 3–11 business days (Monday–Friday)
Shipping Availability: Free Shipping On some Items In The Contiguous United States only

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Frequently Asked Questions

The O-18-HP-WMAH-230C-O indoor air handler is rated for a 15 A maximum fuse/breaker with a 3 A minimum circuit ampacity on 208/230V single-phase power; the paired outdoor condenser has its own electrical rating, so check that unit's specifications as well.

This 18,000 BTU (1.5 ton) air handler is rated for spaces up to 800 sq ft, including open-concept living areas, garages, and workshops.

It pairs with the Olympus O-ES-18-HP-C-230C-O1 single-zone condenser or the MULTI4-27HP230C-O, MULTI5-36HP230C-O, and MULTI6-48HP230C-O multi-zone condensers.

MRCOOL rates this model at SEER2 23.5, EER2 12.7, and HSPF2-4 10.8.

It connects with a 1/4" liquid line and a 1/2" suction line and uses R-454B refrigerant.

The wall-mounted unit measures 40.31" W x 12.64" H x 9.69" D, weighs 27.34 lbs, and runs between 19.5 and 49.5 dBA across its 5 fan speeds.