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Olympus 4th Generation Series
MRCOOL Olympus Duct 9,000 BTU (3/4 Ton) – DUCT-09HP-230B-O
$640.00
In StockShips in 1-2 business days
High efficiency. Quiet performance. Easy installation.
A smart, reliable choice for year-round comfort.
Best for 9K room setups:
- Small bedrooms
- Home offices
- Nurseries
- Small additions
- 9,000 BTU
- Cooling
- 9,000 BTU
- Heating
- See specs
- Quiet Inside
- See specs
- High Efficiency
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Brand Information
MrCool
- Support Number
- (270)366-0457
- Official Site
- MrCool Official Site
Product Overview Full product description Read the longer product copy, features, and application notes. +
MRCOOL — Slim Duct
MRCOOL Olympus Duct 9,000 BTU (3/4 Ton) – DUCT-09HP-230B-O
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MRCOOL Olympus Duct 9,000 BTU (3/4 Ton) – DUCT-09HP-230B-O
Overview
The MRCOOL® OLYMPUS 9K DUCT Air Handler is a reliable solution for heating and cooling spaces up to 400 square feet, making it an excellent fit for bedrooms, home offices, or other compact areas. Its ceiling-integrated design allows for a discreet, flush installation that blends effortlessly into any interior, providing a sleek and contemporary appearance. This space-saving setup is ideal for both residential and light commercial environments where aesthetics and functionality are equally important. For convenient operation, the unit includes both a wall-mounted wired controller and a handheld remote, allowing you to adjust your settings from across the room or right at your fingertips. Whether you're relaxing on the couch or managing temperature throughout the day, controlling your climate is simple and user-friendly. The air handler utilizes R-454B refrigerant, a next-generation, eco-conscious option that combines high performance with environmental responsibility. Its low global warming potential (GWP) significantly reduces the unit’s ecological impact while maintaining energy efficiency and reliable operation. For environmentally mindful homeowners, R-454B is a smart choice that supports sustainability without compromising performance. Backed by a limited warranty, 7-year compressor coverage, and a 5-year parts warranty, the MRCOOL® OLYMPUS 9K DUCT Air Handler is built to deliver dependable, long-term comfort. It’s a perfect solution for those who appreciate energy efficiency, quiet operation, and sleek design all in one dependable system.
Quick Facts
- Capacity:9,000 BTU(3/4 Ton)
- Coverage:Up to 400 sq. ft.
- Refrigerant:R-454B
- Voltage/Phase/Frequency:208/230V, 1-Phase, 60 Hz
- Sound:32.5 / 32.5 / 31 / 29.5 / 23 dBA(5 speeds)
- Airflow:Ducted
- Fan Speeds:5 (Variable)
- Controls: Wired Wall Controller & Handheld Remote
- Smart/Wi-Fi/App:No
- Listings:UL, CSA, ETL
Use our sizing calculator (BTU Calculator) to dial in the right capacity.
Works With (Outdoor Units)
O-ES-09-HP-C-230C-O1, MULTI3-18HP230C-O, MULTI4-27HP230C-O, MULTI5-36HP230C-O, MULTI6-48HP230C-O
Included in Your Order
- MRCOOL Olympus 9K Ducted Air Handler– Model:DUCT-09HP-230B-O
- Wired Wall Controller
- Remote Control
- Installation Manual
- Owner’s & Service Information
Lineset, outdoor unit, and accessories sold separately.
Key Features
- Ceiling-concealed ducted installation
- Ultra-quiet operation down to23 dBA
- R-454Blow-GWP refrigerant
- 5 variable fan speeds
- Reusable filter
- Sleep Mode, Auto Cool, Fan-Only option
- UL, CSA, and ETL listed
Technical Specifications
| Specification | Details |
|---|---|
| Brand / Series | MRCOOL / Olympus Duct |
| Model | DUCT-09HP-230B-O |
| GTIN / UPC | 00840255587662 / 840255587662 |
| Unit Type | Mini-Split |
| Tonnage | 0.75 |
| Voltage / Phase / Cycle | 208/230V / 1-Phase / 60 Hz |
| Max Fuse Breaker | 15 A |
| Min Circuit Ampacity | 3 A |
| Mount Type | Ducted |
| Color | Metal |
| Max Coverage Area | Up to 400 sq. ft. |
| Refrigerant Type | R-454B |
| Sound (dBA) | 32.5 / 32.5 / 31 / 29.5 / 23 |
| Airflow Direction | Ducted |
| Number of Speeds | 5 (Variable) |
| Oscillation | No |
| Lineset Fitting Type | Flare |
| Liquid / Suction Line | 1/4" / 3/8" |
| Blower Motor Speeds (CFM) | 323.7 / 264.9 / 206 / 147.2 / 117.7 |
| Blower Motor RPM | 850 / 680 / 450 |
| Auxiliary Heater (Included / Available) | No / No |
| Fan Only / Sleep Mode / Auto Cool | Yes / Yes / Yes |
| Wi-Fi / App / iOS / Android | No / No / No / No |
| Remote Included | Yes |
| UL / CSA / ETL Listed | Yes / Yes / Yes |
| Prop 65 | Yes |
| Restricted States | GU, PR, VI |
| Net Dimensions (HxWxD) | 7.87" × 27.56" × 19.92" |
| Net / Gross Weight | 39.46 lbs / 46.74 lbs |
Warranty Information
- Limited(see MRCOOL terms)
- 7-YearCompressor Coverage
- 5-YearParts Warranty
- Registered Labor Warranty: None
- Base Labor Warranty: None
Manuals & Downloads
- Olympus Series Brochure
- Olympus Duct Installation Manual
- Olympus Duct Wiring/Terminal Manual
- Olympus Duct 9–18K Service Manual
Please note:Indoor air handler must be matched with a compatible MRCOOL outdoor unit. Lineset, controls, and accessories sold separately.
Specs & Documents Product details Open technical specs, manuals, videos, and product documents. +
Product FAQs
Product FAQs
Helpful answers matched to this product, brand, specs, and configuration.Where should I purchase MRCOOL equipment?
MRCOOL products are sold through authorized retailers and distributors rather than directly by MRCOOL to consumers. Purchasing through an authorized seller helps confirm that the equipment is genuine and that the correct purchase records are available for product and warranty support.
Can MRCOOL components from different series, generations, or refrigerant platforms be mixed?
Do not assume that MRCOOL indoor units, outdoor units, line sets, controls, or accessories are interchangeable. Use only manufacturer-approved combinations for the exact model family; in particular, MRCOOL states that R-410A products are not compatible with R-454B products and the refrigerants must never be mixed.
What makes an eligible MRCOOL DIY system different from a conventional mini-split?
Eligible MRCOOL DIY systems are designed around installation-friendly components such as factory-precharged line sets and compatible connection hardware. The included components vary by generation and package, and electrical work, permits, clearances, and local code requirements still need to be followed.
Does MRCOOL send technicians to a home or jobsite?
MRCOOL does not dispatch field technicians. Its in-house team provides phone and email assistance for diagnosis, troubleshooting, and product guidance, while the owner arranges and pays for any local on-site technician unless a specific written warranty program states otherwise.
Why do I need the exact MRCOOL model and serial number?
The model and serial number identify the exact equipment, generation, capacity, and applicable documentation or warranty. Use the identification labels on the equipment and MRCOOL’s registration guidance rather than relying only on a product title or general series name.
Are all MRCOOL systems designed for do-it-yourself installation?
No. Only product families specifically identified by MRCOOL as DIY-capable should be treated as do-it-yourself systems. Other lines, including the Advantage Series, require professional HVAC installation, so always follow the installation requirements for the exact model.
Where can I find MRCOOL manuals, specifications, certifications, and installation documents?
MRCOOL maintains a documentation library and a product support center with model-specific installation manuals, owner manuals, technical documents, certifications, warranty information, and troubleshooting resources. Search using the exact model number because documents can differ by series, generation, capacity, and refrigerant.
What types of products does MRCOOL offer?
MRCOOL offers a broad range of comfort products, including ductless mini-splits, central ducted split systems, packaged heat pumps, geothermal systems, water heaters, fans, thermostats, line sets, and HVAC accessories. Available capacities, refrigerants, efficiencies, and features depend on the exact product family and model.
When should an MRCOOL system be registered?
Register the system as soon as possible after purchase and installation. Several MRCOOL residential warranty programs require registration within 60 days of installation, or within 60 days of purchase when the installation date cannot be verified, but the exact requirement is controlled by the warranty document for the specific product.
Where can I purchase replacement parts for an MRCOOL system?
MRCOOL recommends starting with the original place of purchase because many dealers can special-order replacement parts. If that is not available, use an authorized MRCOOL parts distributor and confirm compatibility with the exact model and serial number before ordering.
How can I contact MRCOOL customer or technical support?
MRCOOL provides support by phone at (270) 366-0457, by email at support@mrcool.com, and through its online support-request form. Have the exact model and serial number available so the support team can identify the correct product documentation and next steps.
Can MRCOOL support work with my local HVAC technician?
Yes. If a local technician is scheduled, MRCOOL’s in-house support team can help coordinate troubleshooting and product guidance with that technician. The technician should have the model, serial number, system configuration, measurements, error codes, and a clear description of the issue available.
Where can I find MRCOOL troubleshooting and error-code information?
MRCOOL’s support center provides separate technical-support sections for ductless systems, residential ducted systems, product-specific error codes, wiring guidance, installation procedures, and troubleshooting articles. Use the exact series and model because codes and procedures are not universal across all MRCOOL equipment.
How do I register an MRCOOL product for warranty coverage?
Register the product through MRCOOL’s online warranty-registration page. Be prepared to provide the serial number along with purchase, owner, installation-location, and installer information requested by the registration form.
Does every MRCOOL product have the same warranty?
No. MRCOOL publishes separate warranty terms for different product families, generations, and applications. For example, the current DIY 5th Generation warranty lists 5-year parts and 7-year compressor coverage, but that coverage should not be assumed for another MRCOOL series; always check the exact product warranty document.