Cooper & Hunter Olivia Midnight 36,000 BTU 2-Zone 12k+18k Wall Mount, 230V, R454B - Ductless Mini Split Air Conditioner Heat Pump - CH-R36MES-230VO/M12WMB+M18WMB-NO/NO
The Cooper & Hunter Olivia 2-Zone Mini Split System includes two wall-mounted zones with 12,000 BTU and 18,000 BTU capacities, operating efficiently down to -13°F ambient temperatures. It features a built-in Wi-Fi control system, a SEER2 rating of 24, and uses R454B refrigerant for environmentally responsible cooling and heating.
Features
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2-zone system — the CH-R36MES-230VO outdoor unit supports up to 5 indoor units, each individually controlled; port adapters included, no branch boxes required
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36,000 Btu/h rated cooling / 37,000 Btu/h rated heating — inverter range 9,000–42,000 cooling, 10,000–42,500 heating (Btu/h)
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24 SEER2 / 12 EER2 / 9.5 HSPF4 — current R454B-generation efficiency
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Heats down to -13°F outdoor ambient — 26,000 Btu/h rated heating at 5°F; cooling operation -13–122°F
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Wi-Fi Smart Kit built in — Cooper & Hunter app control; remote control included with each indoor unit; compatible with C&H 12V wall thermostat (sold separately)
- ETL listed, AHRI certified, Energy Star Cold Climate & NEEP listed
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Outdoor unit (condenser): CH-R36MES-230VO — 36,000 BTU multi-zone R454B outdoor unit, pre-charged for up to 125 ft of line
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Zone 1 — Wall Mount (Olivia Midnight): CH-RB12MOLVWM-230VI (12,000 Btu/h) with remote control
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Zone 2 — Wall Mount (Olivia Midnight): CH-RB18MOLVWM-230VI (18,000 Btu/h) with remote control
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Wi-Fi Smart Kit (built in) for app control
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Installation kits — choose 16 ft, 25 ft, or 50 ft per zone: copper line set, communication cable, and drain line
Specifications
| Power Supply |
208/230V, 1 Ph, 60 Hz (voltage range 187-253V) |
| Cooling — Rated Capacity (Range) |
60,000 Btu/h (19,000–62,000) |
| Heating at 47°F — Rated Capacity (Range) |
60,000 Btu/h (20,000–60,000) |
| Rated Heating at 5°F |
39,000 Btu/h |
| SEER2 / EER2 |
22 / 10 |
| HSPF4 / HSPF5 / COP (47°F) |
9.5 / 7.4 / 3.7 |
| Outdoor Unit MCA / Max. Fuse |
36 A / 40 A |
| Max. Connectable Indoor Units |
6 |
| Outdoor Noise Level |
65 dB(A) |
| Outdoor Unit Dimensions (W×D×H) |
37.48 × 16.34 × 52.48 in |
| Outdoor Unit Net / Gross Weight |
237.88 / 270.28 lbs |
| Refrigerant Type / Charge |
R454B / 151.68 oz |
| Pre-charged Line Length |
150 ft (add 0.16 oz/ft for 1/4 in liquid pipe / 0.32 oz/ft for 3/8 in liquid pipe) |
| Max. Total Pipe Length / Max. to One Indoor |
262.4 ft / 114.8 ft |
| Max. Height Difference (Indoor–Outdoor / Between Indoors) |
49.2 ft / 33 ft |
| Operating Range — Cooling / Heating |
-13–122°F / -13–75°F outdoor ambient |
What our Experts Think
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Balanced Two-Zone Comfort – This 36,000 BTU system pairs 12K + 18K Olivia Midnight wall-mounted units, delivering independent temperature control for two medium-to-large rooms.
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High-Efficiency Inverter Technology – Variable-speed inverter operation maintains consistent indoor temperatures while helping reduce energy consumption and operating costs.
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Eco-Friendly R454B Refrigerant – Uses next-generation R454B refrigerant for efficient performance with improved environmental characteristics.
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Quiet, Smart Operation – Olivia Midnight indoor units feature whisper-quiet performance, built-in Wi-Fi capability, multiple comfort modes, and advanced air filtration for everyday convenience.
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Year-Round Heat Pump Performance – Provides reliable cooling in summer and efficient heating during colder months, making it a dependable all-season comfort solution.
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Expert Verdict – An excellent choice for homes, apartments, or offices needing efficient dual-zone climate control, stylish Midnight wall units, and dependable energy-saving performance.
Q&A
Q: What rooms is this mini split system designed for?
A: This 36,000 BTU dual-zone system includes one 12,000 BTU and one 18,000 BTU wall-mounted indoor unit, making it ideal for two rooms of different sizes.
Q: Can each zone have its own temperature setting?
A: Yes. Each indoor unit features independent temperature control for personalized comfort in every room.
Q: Does this system provide both heating and cooling?
A: Yes. The heat pump system delivers efficient year-round cooling and heating.
Q: What refrigerant does this system use?
A: It uses R454B refrigerant, designed for improved energy efficiency and a lower environmental impact.
Q: Is this system energy efficient?
A: Yes. Inverter technology automatically adjusts compressor speed to help reduce energy consumption while maintaining consistent indoor comfort.
Maintenance Tips
Damage 
Loss 
Theft 
