MRCOOL Olympus 4th Gen 18,000 BTU 208-230V Ductless Mini-Split Wall Mount Air Handler, R-454B O-18-HP-WMAH-230C-O
Quick Ship, ships in 1 business day
MRCOOL
MRCOOL Olympus 4th Gen 18,000 BTU 208-230V Ductless Mini-Split Wall Mount Air Handler, R-454B O-18-HP-WMAH-230C-O
In stock
$52600
Web Price
This is the manufacturer’s Minimum Advertised Price (MAP). Want a better price? Request a custom quote. Our team can unlock exclusive pricing, volume discounts, and project rates reserved for direct requests. Free and no obligation.
Buying for a build-out?Talk to an equipment specialist →
Ships LTL freight on a pallet
Typically 5-7 business days · Freight cost calculated at checkout
- Voltage: 208/230V, 1-phase, 60 Hz
- R-454B refrigerant
- Flare line set connections
- Wi-Fi compatible, iOS and Android app control
- Manufacturer part number O-18-HP-WMAH-230C-O
?
Need a hand?
Bilingual support from real techs · Mon-Fri 8:30-5 CT
Request a quote
Need a custom build, freight order, or just want pricing in writing before you order? Quotes back within 24 hours.
Overview
The MRCOOL O-18-HP-WMAH-230C-O is a ductless mini-split air handler from the MRCOOL Olympus 4th Gen Air Handlers line. It uses R-454B refrigerant and runs on 208/230V single-phase power. Compatible MRCOOL models: O-ES-18-HP-C-230C-O1, MULTI4-27HP230C-O, MULTI5-36HP230C-O, MULTI6-48HP230C-O.
This is the indoor unit of a mini-split system. Pair it with a compatible MRCOOL condenser and line set to complete the system.
Highlights
- Voice control through Amazon Alexa and Google Assistant
- Control from the MRCOOL SmartHVAC app on iOS and Android
Specifications
| Model | O-18-HP-WMAH-230C-O |
| Series | Olympus 4th Gen Air Handlers |
| Nominal Tonnage | 1.5 |
| Voltage (V) | 208/230 |
| Phase | 1 |
| Frequency (Hz) | 60 |
| Minimum Circuit Ampacity (A) | 3 |
| Max Fuse / Breaker (A) | 15 |
| Refrigerant | R-454B |
| Blower Speeds | 635.7/500.3/359/294.3/294.3 |
| Sound Level (dBA) | 49.5/45/38/31.5/19.5 |
| Sound Level, Low (dBA) | 19.5 |
| Sound Level, High (dBA) | 49.5 |
| Line Set Connection | Flare |
| Liquid Line Size (in) | 1/4 |
| Suction Line Size (in) | 1/2 |
| Remote Control Included | Yes |
| Wi-Fi Compatible | Yes |
| App Control | Yes |
| Mount Type | Wall |
| Color | White |
| Compatible With | O-ES-18-HP-C-230C-O1, MULTI4-27HP230C-O, MULTI5-36HP230C-O, MULTI6-48HP230C-O |
| Dimensions, W × H × D (in) | 40.31 × 12.64 × 9.69 |
| Net Weight (lb) | 27.34 |
| Shipping Dimensions, W × H × D (in) | 43.11 × 15.75 × 12.8 |
| Shipping Weight (lb) | 36.6 |
| Certifications | UL Listed, ETL Listed, CSA Listed |
| Parts Warranty | 5-Year |
| Remote Warranty | 5 Year |
Key features
- Voltage: 208/230V, 1-phase, 60 Hz
- R-454B refrigerant
- Flare line set connections
- Wi-Fi compatible, iOS and Android app control
- Manufacturer part number O-18-HP-WMAH-230C-O
Documents & downloads
Certifications
UL Listed
ETL Listed
CSA Listed
Warranty
Parts Warranty: 5-Year Remote Warranty: 5 Year Coverage terms, registration and installation requirements are set by MRCOOL; see the MRCOOL warranty document for this model.
$526.00

