MRCOOL® Olympus 18,000 BTU (1.5 Ton) Ducted Mini Split Heat Pump — O-ES-18-HP-C-230C-O1 + DUCT-18HP-230B-O
Overview
The MRCOOL® Olympus 18K Ducted system pairs a low-profile, ceiling-concealed ducted air handler with a high-efficiency inverter condenser for reliable year-round comfort in mid-sized spaces. It uses R-454B refrigerant and includes both a wired wall-mounted controller and a handheld remote.
Highlights
- Discreet installation: Ceiling-concealed ducted design delivers comfort without a wall-mounted head.
- Coverage: Designed for spaces up to 800 sq ft.
- Quiet operation: Indoor sound levels as low as 32 dB(A).
- Flexible control: Includes a wired wall controller plus a handheld remote.
- Installer-friendly hookups: Flare fittings with 1/4" liquid and 1/2" suction.
- Energy-conscious refrigerant: Uses R-454B refrigerant.
Up to 800 sq ft*
18,000 / 18,000 BTU
Up to 21.4 SEER2
Indoor 32–40 dB(A)
*Coverage varies by climate, insulation, layout, and load.
What’s Included
- Outdoor Condenser: O-ES-18-HP-C-230C-O1
- Ducted Air Handler: DUCT-18HP-230B-O
- Wired Wall-Mounted Controller
- Handheld Remote Control
- Installation / user documentation (see Documents & Downloads)
Indoor Specs
Model: DUCT-18HP-230B-O (Ducted Air Handler)
| System Type | Single-Zone Ducted Mini Split (Indoor) |
| Tonnage | 1.5 Ton |
| Max Coverage Area | Up to 800 sq ft |
| Airflow Direction | Ducted |
| Indoor Noise (dB[A]) | 40 / 40 / 39 / 38 / 32 |
| Number of Speeds | 5 (Variable) |
| Oscillation | No |
| WiFi / App | No / No |
| Controls Included | Wired wall controller + handheld remote |
| Electrical | 208/230V • 1-Phase • 60 Hz |
| Max Fuse / Breaker | 15A |
| Min Circuit Ampacity | 3A |
| Line Set Fitting Type | Flare |
| Liquid / Suction Line | 1/4" / 1/2" |
| Blower Motor Speeds | 600.4 / 559.2 / 500.3 / 441.4 / 441.4 |
| Blower Motor RPM | 780 / 700 / 550 |
| Aux Heater Included | No |
| Fan Only / Sleep / Auto Cool | Yes / Yes / Yes |
| Color / Mount Type | Metal / Ducted |
| Dimensions (W×D×H) | 34.65" × 26.54" × 8.27" |
| Net Weight | 54.45 lb |
| UPC / GTIN | UPC 840255587686 • GTIN 00840255587686 |
| Restricted States | GU, PR, VI |
| Proposition 65 Warning | Yes |
| Works With | O-ES-18-HP-C-230C-O1 • MULTI4-27HP230C-O • MULTI5-36HP230C-O • MULTI6-48HP230C-O |
Outdoor Specs
Model: O-ES-18-HP-C-230C-O1 (Single-Zone Condenser)
| System Type | Single-Zone Ductless Mini Split Heat Pump |
| Tonnage | 1.5 Ton |
| Cooling / Heating Capacity | 18,000 BTU / 18,000 BTU |
| Max Coverage Area | Up to 800 sq ft |
| SEER2 / EER2 | Up to 21.4 / Up to 12.5 |
| HSPF2-4 / HSPF2-5 | 11 / 8.5 |
| Outdoor Noise | 59 dB(A) |
| Electrical | 208/230V • 1-Phase • 60 Hz |
| MCA / Max Breaker | 19A / 20A |
| Refrigerant | R-454B • 55.38 oz factory charge |
| Inverter | DC |
| Compressor Motor Type | Rotary |
| Metering Device | EXV + Throttle Valve |
| Condenser Fan Motor RPM | 780 / 700 / 550 |
| Line Set | Flared fittings • Liquid 1/4" • Suction 1/2" |
| Max Line Set Length | 98.4 ft |
| Dimensions (W×D×H) | 35.04" × 13.46" × 26.5" |
| Net Weight | 99.87 lb |
| Energy Star Certified | Yes |
| AHRI Certified | Yes |
| UPC / GTIN | UPC 840255587648 • GTIN 00840255587648 |
| Restricted States | GU, PR, VI |
| Proposition 65 Warning | Yes |
| Works With | O-18-HP-WMAH-230C-O • DUCT-18HP-230B-O • CASSETTE18HP-230C-O |
Documents & Downloads
Important
- Professional installation: Installation by a licensed HVAC professional required where applicable.
- Controls: This ducted air handler includes a wired wall controller and a handheld remote.
- Electrical circuit: Size the circuit from the outdoor unit: 19A MCA with a 20A max breaker.
- Proposition 65: Warning applies (see product documentation).
FAQs
Does this system include WiFi / app control?
The ducted air handler is listed as no WiFi and no app compatibility. The outdoor condenser description references WiFi/app capability, but this listing reflects the provided indoor specs.
What controls are included?
A wired wall-mounted controller and a handheld remote are included.
What line set sizes does it use?
Flare connections: 1/4" liquid and 1/2" suction.
What electrical circuit is required?
208/230V, 1-phase, 60 Hz. The outdoor unit specifies 19A MCA and a 20A max breaker.
What warranty comes with it?
Base warranty includes 5-year parts and 7-year compressor coverage (see the warranty document for full terms).
