PRODUCT DESCRIPTION

MRCOOL® Olympus 18,000 BTU (1.5 Ton) Multi-Zone Mini Split Heat Pump Condenser 230 V/60 Hz MULTI3-18HP230C-O (NON-DIY)

The MRCOOL® Olympus MULTI3-18HP230C-O is a high-performance 18,000 BTU multi-zone heat pump condenser built to power up to three indoor units simultaneously. Ideal for homeowners seeking efficient temperature management across multiple rooms, this ductless system provides individualized climate control for each zone. Its advanced inverter technology delivers excellent energy efficiency and dependable operation even in outdoor temperatures as low as 5°F. Compatible with various MRCOOL indoor unit types—including wall-mounted, ceiling cassette, and concealed duct options—this system offers flexibility, reliability, and comfort for year-round performance.

• Multi-Zone Capability: Supports up to three indoor units for customized temperature control in different rooms.
• High Efficiency: Advanced inverter technology provides SEER2 ratings up to 25.1 and HSPF2-4 up to 9.8 for superior energy savings.
• All-Weather Operation: Performs efficiently in outdoor temperatures as low as 5°F, ensuring reliable comfort year-round.
• Flexible Compatibility: Works with a wide range of MRCOOL indoor units, including wall-mounted, ceiling cassette, and ducted models.
• Smart Control Options: Manage your comfort via the MRCOOL SmartHVAC app, remote control, or voice commands through Amazon Alexa and Google Assistant.
• Enhanced Safety Features: Includes sleep mode, auto restart, and refrigerant leak detection for added convenience and peace of mind.
• Warranty Protection: Covered by a 7-year compressor warranty and 5-year parts warranty with professional installation.

Compatible Indoor Units

• Olympus Wall-Mounted Air Handlers (9K – 24K)
• Olympus Ceiling Cassette Air Handlers (9K – 24K)
• Olympus Ducted Air Handlers (9K – 36K)

Total combined BTU of connected indoor units must not exceed 18,000.

SPECIFICATIONS & DIMENSIONS

DIMENSIONS
Dimensions	35.04" W x 13.46" D x 26.5" H
Weight	100.53 lbs

 

 

CAPACITY & PEFORMANCE

Maximum Zones	3
Cooling Capacity	18,000 BTU
SEER2	25.1
EER2	14
Heating Capacity	19,000 BTU
HSPF2-4	9.8
HSPF2-5	7.8
Coverage Area	501 to 750 sq ft.
Outdoor Noise Level	59.5 dB(A)
Outdoor Operating Temperature	Cooling: -13°F to 122°F

 

ELECTRICAL REQUIREMENTS

Voltage	208-230V
Phase	1
Cycle	60 Hz
Max Fuse Breaker	20A
Min Circuit Ampacity	16A

 

REFRIGERANT & PIPING

Refrigerant Type	R-454B
Refrigerant Volume	61.73 oz
Liquid Line Size	3 x 1/4"
Suction Line Size	3 x 3/8"
Max Line Set Length	196.8 ft.

Important: Olympus condensers are not pre-charged for DIY use. They require professional HVAC installation including nitrogen evacuation, vacuuming, and pressure testing to ensure peak performance and warranty coverage