The Cooper & Hunter Olivia 3-Zone Mini Split System features three wall-mounted zones with capacities of 6,000 BTU, 9,000 BTU, and 9,000 BTU, delivering efficient heating and cooling with a SEER2 rating of 25.1. It includes an outdoor unit with a nominal 18,000 BTU capacity, uses R454B refrigerant, and offers built-in Wi-Fi control for remote management, operating effectively down to -13°F ambient temperatures.
Key Features
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3-zone system — the CH-R18MES-230VO outdoor unit supports up to 3 indoor units, each individually controlled; port adapters included, no branch boxes required
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18,000 Btu/h rated cooling / 19,000 Btu/h rated heating — inverter range 5,400–21,600 cooling, 5,700–21,600 heating (Btu/h)
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25.1 SEER2 / 14 EER2 / 9.8 HSPF4 — current R454B-generation efficiency
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Heats down to -13°F outdoor ambient — 13,500 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
Your System Includes
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Outdoor unit (condenser): CH-R18MES-230VO — 18,000 BTU multi-zone R454B outdoor unit, pre-charged for up to 75 ft of line
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Zone 1 — Wall Mount (Olivia): CH-R06MOLVWM-230VI (6,000 Btu/h) with remote control
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Zone 2 — Wall Mount (Olivia): CH-R09MOLVWM-230VI (9,000 Btu/h) with remote control
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Zone 3 — Wall Mount (Olivia): CH-R09MOLVWM-230VI (9,000 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 — CH-R18MES-230VO Outdoor Unit (18,000 BTU, 208/230V)
| Power Supply |
208/230V, 1 Ph, 60 Hz (voltage range 187-253V) |
| Cooling — Rated Capacity (Range) |
18,000 Btu/h (5,400–21,600) |
| Heating at 47°F — Rated Capacity (Range) |
19,000 Btu/h (5,700–21,600) |
| Rated Heating at 5°F |
13,500 Btu/h |
| SEER2 / EER2 |
25.1 / 14 |
| HSPF4 / HSPF5 / COP (47°F) |
9.8 / 7.8 / 3.8 |
| Outdoor Unit MCA / Max. Fuse |
16 A / 20 A |
| Max. Connectable Indoor Units |
3 |
| Outdoor Noise Level |
59.5 dB(A) |
| Outdoor Unit Dimensions (W×D×H) |
35.04 × 13.46 × 26.50 in |
| Outdoor Unit Net / Gross Weight |
100.53 / 109.35 lbs |
| Refrigerant Type / Charge |
R454B / 61.73 oz |
| Pre-charged Line Length |
75 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 |
196.8 ft / 98.4 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 |
Outdoor-unit ratings as printed in the 2026 Cooper & Hunter catalog; combined-system values vary with the indoor unit mix. Minimum line length per zone is 10 ft.
Warranty & Support
Backed by Cooper & Hunter’s 7-year compressor / 5-year parts warranty. Installation by a licensed HVAC professional and product registration within 60 days are required to keep the warranty valid — registration takes minutes online. Cooper & Hunter maintains wide U.S. parts availability and English-speaking technical support.
Frequently Asked Questions
How many rooms can this system heat and cool?
This is a 3-zone system: one CH-R18MES-230VO outdoor unit powers one 6,000 Btu/h wall mount zone, two 9,000 Btu/h wall mount zones, each with its own remote so every room sets its own temperature. The outdoor unit connects up to 3 indoor units total.
Will it keep my home warm in winter?
Yes — it's an inverter heat pump that keeps heating in outdoor temperatures as low as -13°F, still producing 13,500 Btu/h of heat at 5°F.
What's included in the box?
The CH-R18MES-230VO outdoor condenser (18,000 BTU), one× 6,000 Btu/h indoor unit (CH-R06MOLVWM-230VI), two× 9,000 Btu/h indoor unit (CH-R09MOLVWM-230VI), and the built-in Wi-Fi Smart Kit. At checkout you add a line-set installation kit (copper line set, communication cable, drain line) for each zone.
What electrical service does it need?
208/230V single-phase power on a dedicated circuit for the outdoor unit — minimum circuit ampacity 16 A, maximum breaker/fuse 20 A. Have a licensed electrician confirm your panel.
How far can the indoor units be from the outdoor unit?
Up to 196.8 ft of line total across all zones, and up to 98.4 ft to any single indoor unit. It ships pre-charged for 75 ft.
What's the warranty?
A 7-year compressor / 5-year parts limited warranty from Cooper & Hunter. Register within 60 days of installation by a licensed HVAC professional to keep it valid.
Damage 
Loss 
Theft 
