MRCOOL Olympus 4th Generation 3-Zone Ducted Mini Split AC & Heat Pump 27000 BTU (9K+9K+12K), Slim Duct Units, 230V
Concealed slim-duct comfort with a discreet, flush installation—premium efficiency and smart control for professionally installed zoning.
Overview
The Olympus Duct Air Handler features a ceiling-integrated design for a discreet, flush installation that blends into your space—ideal where aesthetics and space efficiency matter.
MULTI4-27HP230C-O + 2X DUCT-09HP-230B-O + DUCT-12HP-230B-O
MULTI4-27HP230C-O
23.0
25
Install note: This is not a DIY system—installation must be completed by an authorized dealer/specialist.
Why Homeowners Love It
- Discreet look: Ceiling-integrated, flush installation that blends into modern interiors.
- Convenient controls: Includes both a wall-mounted wired controller and a handheld remote for simple daily use.
- Multi-zone flexibility: Combine ducted handlers with other compatible indoor styles as needed (system runs in heat or cool mode across the system).
- High efficiency: Advanced inverter technology supports excellent SEER2/HSPF2 performance (model dependent).
- Eco-conscious refrigerant: R-454B.
What’s Included
- (1) Outdoor condenser: MULTI4-27HP230C-O
- Indoor units (slim-duct / concealed duct air handlers):
- 9,000 BTU (x2) — Model: DUCT-09HP-230B-O
- 12,000 BTU (x1) — Model: DUCT-12HP-230B-O
Refrigerant line sets and install materials may be option-based: if an installation kit is not selected, it will not be included. Select the appropriate line length for each indoor unit based on your layout.
Mrcool Olympus Multi-Zones
Key Features
- Ceiling-integrated slim duct design for a sleek, space-saving installation.
- Controls included: wired wall controller + handheld remote for easy day-to-day adjustments.
- Smart control options: SmartHVAC app and voice assistants (Alexa/Google) plus included controls (varies by configuration).
- Reliability features: sleep mode, auto restart, and refrigerant leak detection designed to keep the system running smoothly.
- Eco-conscious refrigerant: R-454B.
Comfort Modes
- Auto: Automatically selects heating or cooling to maintain setpoint.
- Cool / Heat: Dedicated modes for seasonal comfort.
- Dry: Dehumidifies while maintaining comfort.
- Sleep: Energy-saving overnight profile.
- Timer: Scheduled on/off for efficiency.
Warranty
Common coverage includes a 7-year compressor warranty and a 5-year parts warranty (when professionally installed; registration/terms apply).
Extended limited lifetime replacement coverage may be available when enrolled in the MRCOOL® Care Kit Program (fees/conditions apply).
Indoor Specs
| brand name | MRCOOL |
|---|---|
| series | Olympus Duct |
| model | DUCT-12HP-230B-O |
| unit type | Mini-Split |
| short description | Olympus 12,000 BTU 1 Ton Ducted Mini-Split Air Handler - 230V/60Hz |
| long description | The MRCOOL® OLYMPUS 12K DUCT Air Handler delivers efficient and reliable heating and cooling for spaces up to 550 square feet, making it a great choice for bedrooms, home offices, and similarly sized areas. Designed for a discreet ceiling installation, the unit offers a flush-mount finish that seamlessly integrates with your space, enhancing the room’s aesthetic with a clean, modern look. Its compact and versatile design suits both residential and commercial applications, providing an ideal climate solution without sacrificing valuable square footage. For added convenience, the system includes both a wired wall-mounted controller and a handheld remote. Whether you prefer adjusting settings from the wall or without leaving the comfort of your couch, climate control is always within easy reach. This model features R-454B refrigerant, a high-efficiency, environmentally friendly option that delivers outstanding performance while minimizing environmental impact. With a low global warming potential, R-454B supports sustainability and helps reduce your household’s carbon footprint, all without compromising system effectiveness or energy efficiency. The MRCOOL® OLYMPUS 12K DUCT Air Handler is backed by a limited lifetime warranty, along with 7-year compressor protection and a 5-year parts warranty—ensuring long-lasting performance and peace of mind. For those seeking energy-conscious comfort, modern design, and reliable climate control, this unit offers a high-performance solution tailored to today’s demands. |
| works with | O-ES-12-HP-C-230C-O1 MULTI3-18HP230C-O MULTI4-27HP230C-O MULTI5-36HP230C-O MULTI6-48HP230C-O |
| tonnage | 1.0 |
| voltage (v) | 208/230 |
| phase | 1 |
| cycle (hz) | 60 |
| max fuse breaker (a) | 15 |
| min circuit ampacity (a) | 3.0 |
| mount type | Ducted |
| color | Metal |
| max coverage area | Up to 550 |
| refrigerant type | R-454B |
| decibel rating (dba) | 36/36/34.5/32.5/25.5 |
| decibel rating low (dba) | 25.5 |
| decibel rating high (dba) | 36.0 |
| air flow direction | Ducted |
| number of speeds | 5 (Variable) |
| oscillation | No |
| lineset fitting type | Flare |
| liquid line size | 1/4 |
| suction line size | 3/8 |
| blower motor speeds | 400.2/323.7/264.9/176.6/117.7 |
| blower motor rpm | 780/680/580 |
| auxiliary heater included | No |
| auxiliary heater available | No |
| fan only option | Yes |
| sleep mode | Yes |
| auto cool | Yes |
| wifi compatibility | No |
| app compatibility | No |
| works with ios | No |
| works with android | No |
| remote control included | Yes |
| ul listed | Yes |
| csa listed | Yes |
| etl listed | Yes |
| base warranty | 5-Year Parts |
| base parts warranty | 5-Year |
| base remote warranty | 5 Year |
| registered labor warranty | None |
| base labor warranty | None |
| has batteries | Yes |
| contains electronics | Yes |
| contains chemicals | Yes |
| contains compressed gas | Yes |
| proposition 65 warning | Yes |
| restricted states | GU, PR, VI |
| net depth (in) | 19.92 |
| net height (in) | 7.87 |
| net width (in) | 27.56 |
| net weight | 39.46 |
| gross weight (lbs) | 46.74 |
Outdoor Specs
Helpful Notes
Professional installation required
Installation must be performed by an authorized dealer/specialist. Improper installation can cause water leakage, electrical shock, or fire.
System operation (heat vs cool)
Multi-zone condensers can heat or cool multiple rooms, but they cannot do both at the same time. The system runs entirely in heating or cooling mode.
Refrigerant piping, evacuation, and line set selection
This system requires standard professional refrigerant piping practices, including evacuation with a vacuum pump/manifold gauge per the installation manual. Select the correct line length for each head; if an installation kit is not selected, it will not be included.
Line sizing
Indoor line sizes: 1/4 / 3/8. Confirm final line sizes and allowable lengths for your exact pairing before selecting a line set.
