MRCOOL® Olympus 12,000 BTU (1 Ton) Ducted Mini Split Heat Pump — O-ES-12-HP-C-230C-O1 + DUCT-12HP-230B-O
Overview
The MRCOOL® Olympus 12K Ducted system pairs a discreet, ceiling-installed ducted air handler with a high-efficiency inverter condenser for reliable year-round comfort in smaller-to-mid sized spaces. It uses R-454B refrigerant and includes both a wired wall-mounted controller and a handheld remote for flexible control.
Highlights
- Discreet installation: Ceiling-mounted ducted design delivers comfort without a wall-mounted head.
- Coverage: Designed for spaces up to 550 sq ft.
- Quiet performance: Indoor sound levels as low as 25.5 dB(A).
- Flexible control: Includes a wired wall controller plus a handheld remote.
- Efficient comfort: High efficiency ratings with inverter-driven outdoor performance.
- Installer-friendly hookups: Flare fittings with 1/4" liquid and 3/8" suction.
Up to 550 sq ft*
12,000 / 12,000 BTU
Up to 25.4 SEER2
Indoor 25.5–36 dB(A)
*Coverage varies by climate, insulation, layout, and load.
What’s Included
- Outdoor Condenser: O-ES-12-HP-C-230C-O1
- Ducted Air Handler: DUCT-12HP-230B-O
- Wired Wall-Mounted Controller
- Handheld Remote Control
- Installation / user documentation (see Documents & Downloads)
Indoor Specs
Model: DUCT-12HP-230B-O (Ducted Air Handler)
| System Type | Single-Zone Ducted Mini Split (Indoor) |
| Tonnage | 1 Ton |
| Max Coverage Area | Up to 550 sq ft |
| Airflow Direction | Ducted |
| Indoor Noise (dB[A]) | 36 / 36 / 34.5 / 32.5 / 25.5 |
| 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" / 3/8" |
| Blower Motor Speeds | 400.2 / 323.7 / 264.9 / 176.6 / 117.7 |
| Blower Motor RPM | 780 / 680 / 580 |
| Aux Heater Included | No |
| Fan Only / Sleep / Auto Cool | Yes / Yes / Yes |
| Color / Mount Type | Metal / Ducted |
| Dimensions (W×D×H) | 27.56" × 19.92" × 7.87" |
| Net Weight | 39.46 lb |
| UPC / GTIN | UPC 840255587679 • GTIN 00840255587679 |
| Restricted States | GU, PR, VI |
| Proposition 65 Warning | Yes |
| Works With | O-ES-12-HP-C-230C-O1 • MULTI3-18HP230C-O • MULTI4-27HP230C-O • MULTI5-36HP230C-O • MULTI6-48HP230C-O |
Outdoor Specs
Model: O-ES-12-HP-C-230C-O1 (Single-Zone Condenser)
| System Type | Single-Zone Ductless Mini Split Heat Pump |
| Tonnage | 1 Ton |
| Cooling / Heating Capacity | 12,000 BTU / 12,000 BTU |
| Max Coverage Area | Up to 550 sq ft |
| SEER2 / EER2 | Up to 25.4 / Up to 13.4 |
| HSPF2-4 / HSPF2-5 | 10.5 / 8 |
| Outdoor Noise | 56 dB(A) |
| Electrical | 208/230V • 1-Phase • 60 Hz |
| MCA / Max Breaker | 15A / 15A |
| Refrigerant | R-454B • 35.27 oz factory charge |
| Inverter | DC |
| Compressor Motor Type | Rotary |
| Metering Device | EXV |
| Line Set | Flared fittings • Liquid 1/4" • Suction 3/8" |
| Max Line Set Length | 82 ft |
| Dimensions (W×D×H) | 31.69" × 12.99" × 21.81" |
| Net Weight | 72.75 lb |
| Energy Star Certified | Yes |
| AHRI Certified | Yes |
| UPC / GTIN | UPC 840255587631 • GTIN 00840255587631 |
| Restricted States | GU, PR, VI |
| Proposition 65 Warning | Yes |
| Works With | O-12-HP-WMAH-230C-O • DUCT-12HP-230B-O • CASSETTE12HP-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: 15A MCA with a 15A 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 3/8" suction.
What electrical circuit is required?
208/230V, 1-phase, 60 Hz. The outdoor unit specifies 15A MCA and a 15A 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).
