Cooper&Hunter Hyper Multi-Zone Outdoor — 18,000 BTU, R454B — CH-R18MES-230VO
Overview
Cooper&Hunter’s 18K BTU Hyper Multi-Zone outdoor unit is built for efficient, flexible comfort in residential spaces. It supports up to three zones for independent room-by-room control and uses advanced inverter technology to modulate compressor speed for steady performance and lower energy use. With up to 25.1 SEER2 efficiency and R454B refrigerant (lower GWP vs. many conventional options), it’s a strong fit for modern, eco-conscious multi-zone installations.
Highlights
- Multi-zone flexibility: supports up to 3 independent zones with compatible indoor units.
- High efficiency: up to 25.1 SEER2 for strong seasonal energy savings.
- Inverter performance: precise compressor modulation for stable comfort and reduced operating cost.
- Eco-forward refrigerant: uses R454B to reduce environmental impact.
- Compact & practical: designed for easier placement where space is limited.
What's Included
- Outdoor unit CH-R18MES-230VO
- Owner / installation documentation
Pair only with compatible Cooper&Hunter Hyper Multi-Zone indoor units. Match zone combinations and piping requirements before installation.
Indoor Specs
| Spec | Details |
|---|---|
| System type | Multi-zone unit (outdoor) |
| Zones supported | Up to 3 independent zones (depends on indoor unit selection) |
| Compatible indoor units | Cooper&Hunter Hyper Multi-Zone indoor units (zone mix varies by combination) |
| Refrigerant piping (per zone) | 1/4″ liquid · 3/8″ gas (3 circuits) |
| Max height difference (IDU↔ODU) | 49.2 ft |
| Combination guidance | Use the provided Multi-Zone Combination PDFs to confirm valid indoor mixes |
Indoor-unit capacities, features, and controls depend on the specific indoor models selected for each zone.
Outdoor Specs
| Spec | Details |
|---|---|
| Model | CH-R18MES-230VO |
| Refrigerant type | R454B |
| Power source | 208–230V, 1Ph, 60Hz |
| Voltage range | 187–253 V |
| Cooling capacity (Min/Max) | 18,000 BTU/h (5,400–21,600) |
| Heating capacity (Min/Max) | 19,000 BTU/h (5,700–21,600) |
| SEER2 / EER2 | 25.1 / 14 |
| HSPF2-4 / HSPF2-5 | 9.8 / 7.8 |
| COP | 3.8 |
| Minimum circuit ampacity (MCA) | 16 A |
| Max fuse | 20 A |
| Outdoor Air Flow | 1,765.8 CFM |
| Outdoor Noise Level | 59.5 dB(A) |
| Dehumidification | 0.42 pints/day |
| Unit dimensions (W×H×D) | 35.04 × 13.46 × 26.50 in |
| Packing dimensions (W×D×H) | 40.55 × 17.24 × 29.53 in |
| Net / Gross weight | 100.53 / 109.35 lb |
| Refrigerant precharge | 75 (factory charge) |
| Refrigerant piping (Liquid/Gas) | 3× 1/4″ · 3× 3/8″ |
| Ambient temperature — Heating | −13 to 75 °F |
| Ambient temperature — Cooling | −13 to 122 °F |
| Additional refrigerant charge — 3/8″ liquid line | 0.32 |
| Additional refrigerant charge — 1/4″ liquid line | 0.16 |
Documents & Downloads
- CH-R18MES-230VO Submittal (PDF)
- CH-R18MES-230VO Submittal — Non-Ducted (PDF)
- Installation Manual — Multi-R (PDF)
- Multi-Zone Combination — HYPER (PDF)
- Multi-Zone Combination — Regular (PDF)
AHRI certification numbers (reference): Ducted 215864254 · Non-Ducted 215864255 · Mixed 215864256.
Important
Install by a licensed HVAC professional. Confirm indoor unit combinations, voltage range (187–253 V), MCA/max-fuse, refrigerant piping per zone, height limits, and ambient operating ranges before commissioning.
FAQs
How many zones can this support?
What line sizes are required?
What are the power requirements?
What refrigerant does it use?
What are the operating temperature ranges?
How efficient is this outdoor unit?
