MRCOOL® Olympus 12,000 BTU (1 Ton) Ceiling Cassette Mini Split Heat Pump — O-ES-12-HP-C-230C-O1 + CASSETTE12HP-230C-P-O
Overview
The MRCOOL® Olympus 12K Ceiling Cassette delivers reliable heating and cooling for smaller spaces while keeping a clean, flush ceiling appearance. It pairs a ceiling cassette (with panel) with an inverter-driven outdoor unit for efficient performance using R-454B refrigerant.
Highlights
- Flush ceiling look: Cassette design blends into the ceiling for a sleek, modern finish.
- Coverage: Designed for areas up to 550 sq ft.
- Quiet comfort: Indoor sound levels down to 26 dB(A) with a high rating of 46 dB(A).
- Downflow delivery: Downflow airflow with oscillation for better room mixing.
- Energy efficiency: High efficiency ratings with inverter-driven outdoor performance.
- Easy maintenance: Reusable filter design.
Up to 550 sq ft*
12,000 / 12,000 BTU
Up to 25.4 SEER2
Indoor 26–46 dB(A)
*Coverage varies by climate, insulation, layout, and load.
What’s Included
- Outdoor Condenser: O-ES-12-HP-C-230C-O1
- Ceiling Cassette (with Panel): CASSETTE12HP-230C-P-O
- Remote Control
- Installation / user documentation (see Documents & Downloads)
Indoor Specs
Model: CASSETTE12HP-230C-P-O (Ceiling Cassette with Panel)
| System Type | Single-Zone Ductless Mini Split (Ceiling Cassette) |
| Tonnage | 1 Ton |
| Max Coverage Area | Up to 550 sq ft |
| Airflow Direction | Downflow |
| Indoor Noise (dB[A]) | 46 / 43.5 / 40.5 / 27.5 / 26 |
| Number of Speeds | 5 (Variable) |
| Oscillation | Yes |
| WiFi / App | No / No |
| Remote Control Included | Yes |
| 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 | 417.9 / 364.9 / 306.1 / 194.2 / 147.2 |
| Blower Motor RPM | 700 / 600 / 400 |
| Filter Type | Reusable |
| Fan Only / Sleep / Auto Cool | Yes / Yes / Yes |
| Color / Mount Type | White / Ceiling |
| Dimensions (W×D×H) | 22.44" × 24.44" × 9.65" |
| Net Weight | 35.27 lb |
| UPC / GTIN | UPC 840255587976 • GTIN 00840255587976 |
| 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
- Olympus Multi-Zone 4th Gen Brochure (EN)
- Ceiling Cassette Installation & User Manual (EN)
- Ceiling Cassette Performance / Spec Sheet (EN)
- Ceiling Cassette Service Manual (EN)
- Warranty (EN)
- Olympus Single-Zone 4th Gen Brochure (EN)
- Single-Zone Installation & User Manual (EN)
- Single-Zone Service Manual (EN)
- AHRI Certificate (PDF)
- EnergyGuide (PDF)
Important
- Professional installation: Installation by a licensed HVAC professional required where applicable.
- Electrical circuit: Size the circuit from the outdoor unit: 15A MCA with a 15A max breaker.
- Refrigerant & line length: Factory charge supports standard runs; longer runs may require additional refrigerant.
- Proposition 65: Warning applies (see product documentation).
FAQs
Does this cassette include WiFi / app control?
No. This cassette model is listed as no WiFi and no app compatibility. Remote control is 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).
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We will prepare your order within 24 hours if it’s received on a weekday (before noon). Orders are shipped in one to two business days. Transit time is between 3 to 6 business days, although exceptions apply. We email tracking information once your purchase is shipped.
Delivery Map
IMPORTANT DELIVERY INFORMATION: Please be kindly informed that this air conditioner, due to its weight and shipping restrictions, is shipped palletized with an arranged freight service and requires an appointment for delivery. To AVOID delays, please check if the provided phone number in the order details is a current number where you can be reached. You can also contact the carrier directly and refer to your tracking number to set up a date and time for your appointment. It is your responsibility to ensure a safe and secure environment for delivery. Please note that we cannot be held liable for any packages that are stolen or lost after delivery has been confirmed. PLEASE verify your shipping address, as changes to the address after freight has shipped can result in an additional 15% or higher fee depending on freight weight and dimensions.
SMALLWARES INFORMATION: Please be informed that for smaller items, such as Installation Kits, Smart Connectivity Dongles, and TTW Sleeves, when these items are ordered individually, they may be shipped via FedEx without a signature requirement. It is your responsibility to ensure a safe and secure environment for delivery. Please note that we cannot be held liable for any packages that are stolen or lost after delivery has been confirmed. Thank you for your understanding and cooperation.
INSPECT YOUR MERCHANDISE BEFORE SIGNING: Please inspect your boxes thoroughly when you receive them. They should arrive shrink-wrapped and on a pallet. If you notice any damages or imperfections (e.g. crushed box or forklift hole), please write comments on the receipt before signing for delivery, no matter how small damages seem. Contact us immediately to assist you.
Shipping & Delivery
We will prepare your order within 24–48 hours if it’s received on a weekday (before noon). Orders are shipped in one to two business days. Transit time is between 3 to 6 business days, although exceptions apply. We email tracking information once your purchase is shipped.
Delivery Map
IMPORTANT DELIVERY INFORMATION
Please be informed that this air conditioner, due to its weight and shipping restrictions, is shipped palletized with an arranged freight service and requires an appointment for delivery.
To AVOID delays, please make sure the phone number in your order details is accurate and one where you can be reached. You may also contact the carrier directly using your tracking number to schedule your delivery.
It is your responsibility to ensure a safe and secure delivery environment. We are not liable for any packages that are stolen or lost after delivery is confirmed.
Please verify your shipping address carefully. Changes to your shipping address after the freight has been shipped may result in additional fees of 15% or more, depending on freight weight and dimensions.
SMALLWARES INFORMATION
Smaller items such as Installation Kits, Smart Connectivity Dongles, and TTW Sleeves may be shipped via FedEx without a signature requirement if ordered individually.
It is your responsibility to ensure a safe delivery location. We are not liable for packages lost or stolen after delivery confirmation. Thank you for your understanding and cooperation.
INSPECT YOUR MERCHANDISE BEFORE SIGNING
Please inspect your boxes carefully upon delivery. Shipments should arrive shrink-wrapped and on a pallet. If you notice any damage or signs of mishandling (such as a crushed box or forklift puncture), write comments on the delivery receipt before signing, even if the damage appears minor.
Contact us immediately if any issues arise so we can assist you promptly.
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