MRCOOL Olympus 18,000 BTU 4th Gen Multi-Zone Heat Pump Condenser | MULTI3-18HP230C-O
Summary
The MRCOOL® Olympus MULTI3-18HP230C-O is a high-performance 18,000 BTU multi-zone heat pump condenser designed to power up to three indoor units simultaneously. Perfect for homeowners looking to efficiently manage temperatures in multiple spaces, this ductless system offers individualized climate control for each connected zone, making it a flexible solution for modern living environments. Built with advanced inverter technology, the unit delivers impressive efficiency, with SEER2 ratings up to 25.1 and HSPF2-4 up to 10. It performs reliably in diverse conditions, operating in outdoor temperatures as low as 5°F, ensuring comfort in both summer and winter months. This model is compatible with various MRCOOL indoor units, including wall-mounted, ceiling cassette, and concealed duct options, giving users the freedom to tailor the system to their home’s layout and aesthetics. Smart features elevate user convenience, with control options that include the MRCOOL SmartHVAC app, traditional remotes, or even voice commands via Amazon Alexa and Google Assistant. Additional functions such as sleep mode, auto restart, and refrigerant leak detection contribute to enhanced safety and comfort. Backed by a 7-year warranty on the compressor and 5 years on parts (with professional installation), the MRCOOL® Olympus MULTI3-18HP230C-O is a reliable and energy-efficient choice for those seeking customized, zone-specific heating and cooling.
Important
Installation by a licensed professional required where applicable. Register your product to activate warranty coverage. This condenser contains R-454B refrigerant, which is classified as an A2L refrigerant. Installation must comply with all applicable safety standards and local codes. Failure to comply with these requirements may result in safety hazards and could void the warranty.
Key Features
- 18,000 BTU cooling capacity (1.5 Ton)
- Up to 25.1 SEER2 efficiency rating
- Up to 14 EER2 efficiency rating
- Multi-zone capacity (supports up to 3 indoor units)
- Advanced DC inverter technology
- Quiet operation (59.5 dBA)
- Pre-charged with R-454B refrigerant
- Smart control compatible (MRCOOL App, Alexa, Google Assistant)
- Energy Star Certified
- Operates in heating mode down to 5°F outdoor temperature
- Extended 196.8 ft maximum total line set length
Complete Technical Specifications
| Brand | MRCOOL |
| Series | Olympus 4th Gen Multi-Zone Condensers |
| Model | MULTI3-18HP230C-O |
| UPC | 840255587785 |
| GTIN | 00840255587785 |
| Unit Type | Mini-Split Heat Pump Condenser |
| Certifications | UL Listed, CSA Listed, ETL Listed, AHRI Certified, Energy Star Certified |
| Cooling Capacity | 18,000 BTU (1.5 Ton) |
| Heating Capacity | 19,000 BTU |
| Efficiency Ratings | Up to 25.1 SEER2, Up to 14 EER2 |
| Heating Efficiency | Up to 9.8 HSPF2-4, Up to 7.8 HSPF2-5 |
| Refrigerant | R-454B (61.73 oz) |
| Electrical | 208/230V 1 Phase 60 Hz |
| Min Circuit Ampacity | 16A |
| Max Fuse Breaker | 20A |
| Compressor Type | Twin-Rotary |
| Condenser Fan Motor | DC, 750/600/500 RPM |
| Sound Rating | 59.5 dBA |
| Min Ambient Heating | 5°F |
| Max Total Lineset Length | 196.8 ft |
| Liquid Line Size | 3 x 1/4" |
| Suction Line Size | 3 x 3/8" |
| Line Set Connection | Flare |
| Net Dimensions (HxWxD) | 26.5" x 35.04" x 13.46" |
| Net Weight | 100.53 lbs |
| Shipping Dimensions | 29.53" x 40.55" x 17.24" |
| Shipping Weight | 109.35 lbs |
Performance Features
| Compatible Equipment | Various MRCOOL Olympus indoor units (Wall-mounted, Ceiling Cassette, Concealed Duct) |
| Compressor Technology | Advanced DC Inverter with Twin-Rotary compressor |
| Refrigerant | Eco-friendly R-454B with lower global warming potential |
| Noise Reduction | Quiet operation (59.5 dBA) |
| Smart Features | MRCOOL SmartHVAC App, Amazon Alexa, Google Assistant compatibility |
| Zone Capacity | Supports up to 3 individual indoor zones |
| Extended Installation | Supports up to 196.8 ft total line set length for flexible placement |
| Max Coverage Area | Up to 750 sq ft |
Warranty Information
- Registered Warranty (with professional installation): 5 years parts, 7 years compressor
- Base Warranty: 5 years parts, 7 years compressor
- Professional installation and registration required for full warranty coverage
Manuals & Certifications
Safety Information
PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Advanced Technology
The MRCOOL Olympus 4th Gen Multi-Zone Condenser features advanced DC inverter technology with a twin-rotary compressor designed for maximum efficiency and reliable operation. The system delivers exceptional energy performance with SEER2 ratings up to 25.1 and HSPF2 ratings up to 9.8, providing both efficient cooling and heating capabilities. Smart control options including the MRCOOL SmartHVAC app and voice command compatibility with Amazon Alexa and Google Assistant offer modern convenience and precise temperature management. With its multi-zone capability supporting up to three indoor units, this system provides customized comfort solutions for different areas of your home.
Installation Advantages
This multi-zone heat pump condenser simplifies installation with its pre-charged R-454B refrigerant system and flare connection fittings. The unit supports extended total line set lengths up to 196.8 feet, providing maximum flexibility for various installation scenarios. The compact cabinet design allows for efficient placement while maintaining the sophisticated technology within. The system is designed to work with various MRCOOL Olympus indoor units including wall-mounted, ceiling cassette, and concealed duct options for complete system compatibility. With its high efficiency ratings, quiet operation at 59.5 dBA, and ability to heat in temperatures as low as 5°F, this multi-zone condenser is an ideal solution for homeowners seeking zoned comfort with modern smart features.
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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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