MRCOOL Olympus 4th Gen Mini Split - 3-Zone 36,000 BTU Air Conditioner and Heat Pump Condenser with 12K + 12K + 9K Ceiling Mount Air Handlers

MRCOOL Olympus 4th Gen Mini Split - 3-Zone 36,000 BTU Air Conditioner and Heat Pump Condenser with 12K + 12K + 9K Ceiling Mount Air Handlers

SKU: OY4-3ZC-36HP-9K12K12K

Sale price$4,328.00 Regular price$5,350.00
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In Stock Estimated delivery: Nov 2nd-11th
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Package Overview

The MRCOOL® Olympus 36K Multi-Zone Ducted System provides efficient, high-performance comfort for homes up to 1500 sq. ft. Featuring one  BTU multi-zone inverter condenser paired with one 9K and two 12K ceiling cassette air handlers , this system delivers personalized heating and cooling across multiple rooms. Compact, quiet, and eco-friendly with R-454B refrigerant, it combines advanced technology with smart control for a seamless, whole-home comfort experience.

Features

  • Total coverage: up to 1500 sq. ft. across 3 indoor zones
  • 36,000 BTU multi-zone inverter condenser supports up to 6 zones
  • Up to 24 SEER2 / 9.5 HSPF2-4 efficiency ratings
  • Eco-friendly R-454B refrigerant with low global warming potential
  • Smart control via MRCOOL® SmartHVAC app, Alexa, or Google Assistant
  • Quiet operation and long-lasting, reliable performance
  • Warranty: Limited lifetime, 7-year compressor, 5-year parts

Package Includes:

Description
Product Specs
Manuals & Guides

The MRCOOL® Olympus 36,000 BTU multi-zone heat pump condenser is a high-capacity, heat pump condenser built to power up to five indoor units simultaneously. Designed for homeowners who want efficient and individualized temperature control across multiple rooms, this ductless system delivers tailored comfort to every zone—making it an excellent fit for modern, multi-room living spaces.

Featuring cutting-edge inverter technology, the system provides exceptional energy performance, with SEER2 ratings up to 24 and HSPF2-4 up to 9.5. It operates reliably even in extreme outdoor conditions, functioning in temperatures as low as 5°F to keep your home comfortable year-round. Compatibility with a variety of MRCOOL indoor units—including wall-mounted, ceiling cassette, and concealed duct options—means it’s easy to customize the setup to suit your home’s layout and aesthetic. Smart control options enhance everyday convenience, offering seamless operation through the MRCOOL SmartHVAC app, included remote control, or voice commands via Amazon Alexa and Google Assistant. 

Additional features like sleep mode, auto restart, and built-in refrigerant leak detection further improve safety, energy efficiency, and peace of mind. Backed by a 7-year limited warranty on the compressor and a 5-year parts warranty (when installed by a professional), the MRCOOL® Olympus MULTI5-36HP230C-O is a reliable, energy-efficient choice for those looking to achieve flexible, zone-specific heating and cooling throughout their home.

Features

Installation by a licensed professional required where applicable 7-Year Compresser, 5-Year Parts warranty when registered and installed by a licensed professional R-454B environmentally friendly friendly refrigerant Energy Star Certified

Works With

  • O-09-HP-WMAH-230C-O
  • DUCT-09HP-230B-O
  • CASSETTE09HP-230C-O
  • O-12-HP-WMAH-230C-O
  • DUCT-12HP-230B-O
  • CASSETTE12HP-230C-O
  • O-18-HP-WMAH-230C-O
  • DUCT-18-HP-230B-O
  • CASSETTE18HP-230C-O
  • O-24-HP-WMAH-230C-O
  • DUCT-24HP-230B-O
  • CASSETTE24HP-230C-O
Net Dimensions (In) 16.14 D x 31.89 H x 37.24 W
Net Weight (Lbs) 168.87
SEER2 Up to 24
EER2 Up to 12
HSPF2-4 9.5
HSPF2-5 7
Tonnage 3
Cooling Capacity (Btu) 36000
Heating Capacity (Btu) 37000
Voltage (V) 208/230
Phase 1
Cycle 60
Max Fuse Breaker (A) 35
Min Circuit Ampacity (A) 30.5
Color White
Max Coverage Area Up to 1500
Zone Capacity 5
Refrigerant Type R-454B
Refrigerant Volume (Oz) 120.63
Decibel Rating (Dba) 64.5
Inverter DC
Max Lineset Length (Ft) 262.4 total
Lineset Fitting Type Flare
Liquid Line Size 5 x 1/4
Suction Line Size 4 x 3/8 + 1 x 1/2
Compressor Motor Type Rotary
Condenser Fan Motor Rpm 900/750/600
Metering Device EXV
UL Listed Yes
CSA Listed Yes
ETL Listed Yes
Energy Star Certified Yes
AHRI Certified Yes
Base Warranty 5-Year Parts/7-Year Compressor
Base Parts Warranty 5-Year
Base Compressor Warranty 7-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
Gross Depth (In) 19.68
Gross Height (In) 34.84
Gross Width (In) 42.91
Gross Weight (Lbs) 180.12
Description
Product Specs
Manuals & Guides

The MRCOOL® OLYMPUS 9K CASSETTE provides dependable heating and cooling for spaces up to 400 square feet, making it perfect for bedrooms, home offices, and smaller areas. Designed to fit seamlessly into the ceiling for a flush look, it almost disappears, creating a clean, modern aesthetic that complements any room style. Its versatile design is perfect for homes or businesses looking to maximize space while maintaining an elegant, high-performance climate solution. The indoor fan operates at a quiet 42 dB, ensuring a peaceful environment without compromising performance. This ultra-low noise level means you can enjoy consistent, efficient heating or cooling without disruptive fan sounds, ideal for spaces where silence is crucial, like bedrooms, offices, or nurseries. The quiet operation helps enhance the overall comfort of your space, providing a relaxing atmosphere free from distractions.

The unit uses R-454B refrigerant, an eco-friendly solution that provides top-tier performance while being environmentally responsible. With low global warming potential, R-454B helps reduce the environmental impact of your system, contributing to a greener, more sustainable home, without sacrificing performance or efficiency. This refrigerant is an important choice for homeowners seeking to lower their carbon footprint while still enjoying reliable performance.

The MRCOOL® OLYMPUS 9K CASSETTE comes with a limited lifetime warranty, 7-year compressor coverage, and a 5-year parts warranty, ensuring reliability, cutting-edge technology, and peace of mind. This unit is the ideal solution for homeowners who value efficiency, comfort, and modern design.

Works With

  • O-ES-09-HP-C-230C-O1
  • MULTI3-18HP230C-O
  • MULTI4-27HP230C-O
  • MULTI5-36HP230C-O
  • MULTI6-48HP230C-O
Net Dimensions (In) 22.44 D x 9.65 H x 22.44 W
Net Weight (Lbs) 35.27
Tonnage 0.75
Voltage (V) 208/230
Phase 1
Cycle 60
Max Fuse Breaker (A) 15
Min Circuit Ampacity (A) 3
Mount Type Ceiling
Color White
Max Coverage Area Up to 400
Refrigerant Type R-454B
Decibel Rating (Dba) 42.5/40/37.5/26/24
Decibel Rating Low (Dba) 24
Decibel Rating High (Dba) 42.5
Air Flow Direction Downflow
Number Of Speeds 5 (Variable)
Oscillation Yes
Lineset Fitting Type Flare
Liquid Line Size 4-Jan
Suction Line Size 8-Mar
Blower Motor Speeds 353.2/312/264.9/182.5/147.2
Blower Motor Rpm 600/530/380
Filter Type Reusable
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
Gross Weight (Lbs) 41.89
Description
Product Specs
Manuals & Guides

The MRCOOL® OLYMPUS 12K CASSETTE delivers reliable heating and cooling for areas up to 550 square feet, making it an excellent option for bedrooms, home offices, or other smaller spaces. Designed to be installed flush within the ceiling, it blends seamlessly into your room, offering a sleek, modern look that enhances any décor.

This versatile system is perfect for both residential and commercial spaces, maximizing room usage while providing an efficient and stylish climate control solution. Operating at a quiet 46 dB, the indoor fan ensures that your space remains calm and undisturbed while still delivering consistent performance. Its low noise level allows for optimal heating or cooling without distracting sounds, making it ideal for environments that require peace, such as bedrooms, home offices, or nurseries. The quiet operation creates a comfortable atmosphere that enhances relaxation and productivity. The system uses R-454B refrigerant, a sustainable choice that balances high performance with environmental responsibility. With its low global warming potential, R-454B minimizes the environmental impact of your unit while offering exceptional efficiency. This makes it a great option for homeowners looking to reduce their carbon footprint while still enjoying reliable, top-quality performance.

The MRCOOL® OLYMPUS 12K CASSETTE is backed by a limited lifetime warranty, 7 years of compressor coverage, and a 5-year parts warranty, ensuring lasting reliability and cutting-edge technology. This system is the perfect fit for those who prioritize energy efficiency, modern style, and optimal comfort.

Works With

  • O-ES-12-HP-C-230C-O1
  • MULTI3-18HP230C-O
  • MULTI4-27HP230C-O
  • MULTI5-36HP230C-O
  • MULTI6-48HP230C-O
Net Dimensions (In) 24.44 D x 9.65 H x 22.44 W
Net Weight (Lbs) 35.27
Tonnage 1
Voltage (V) 208/230
Phase 1
Cycle 60
Max Fuse Breaker (A) 15
Min Circuit Ampacity (A) 3
Mount Type Ceiling
Color White
Max Coverage Area Up to 550
Refrigerant Type R-454B
Decibel Rating (Dba) 46/43.5/40.5/27.5/26
Decibel Rating Low (Dba) 26
Decibel Rating High (Dba) 46
Air Flow Direction Downflow
Number Of Speeds 5 (Variable)
Oscillation Yes
Lineset Fitting Type Flare
Liquid Line Size 1/4
Suction Line Size 3/8
Blower Motor Speeds 417.9/364.9/306.1/194.2/147.2
Blower Motor Rpm 700/600/400
Filter Type Reusable
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
Gross Weight (Lbs) 41.89

Mini Split FAQ

 

What BTU rating should I choose for my air handler?

  • This depends on the coverage area/room size you are trying to heat/cool
  • An Air Handler's BTU is how powerful the fan is. A higher BTU rating will be able to heat/cool a larger area
Air Handler BTU Coverage Area/Room Size (Sq. Ft.)*
6K
Up to 200 Sq. Ft.
9K
Up to 375 Sq. Ft.
12K Up to 500 Sq. Ft.
18K Up to 750 Sq. Ft.
24k Up to 1,000 Sq. Ft.
36k Up to 1,500 Sq. Ft.

 

*Ceiling height, insulation, and local climate may impact the coverage area. For example, an uninsulated room will require more power than a well insulated room.

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