Multi-Position Air Handler + Outdoor Unit • R454B • 208–230V
Cooper&Hunter 18,000 BTU High Efficiency Multi Position Air Handler Unit Ducted Heat Pump Split System R454B 230V
Overview
18K multi-position air handler paired with a regular single-zone outdoor condenser for efficient heating and cooling. Horizontal/vertical indoor installation, inverter-driven operation, and smart control support flexible, comfortable performance.
Highlights
Capacity: 18,000 BTU Refrigerant: R454B System SEER2: 18.5 Outdoor EER2: 12.5 ESP Range: 0–0.8 Line Set: 1/4" × 1/2" Heating Ambient: -13°F to 75°F Cooling Ambient: -13°F to 122°F AHRI: 207742320
System Search
Voltage
208–230V (1Ph, 60Hz)
Voltage Range
187–253V
Max Line / Lift
98.4 ft / 65.6 ft
Outdoor MCA / Max Fuse
18A / 20A
Drain Size
3/4"
- Multi-position indoor install (horizontal or vertical)
- Intelligent air flow with three-speed fan motor (auto/manual static adjustment)
- Anti-cold air function supports more comfortable heating startups
- Fast cool/heat mode support
- Refrigerant leak detection and wired controller support
What’s Included
- Indoor unit: CH-RS18MAHU
- Outdoor unit: CH-RES18-230VO
- Remote control and wall thermostat
- Wired controller support
- Smart kit connectivity support
- Optional auxiliary heater support (purchased separately)
Indoor Specs (CH-RS18MAHU)
| Spec | Value |
|---|---|
| Refrigerant Type | R454B |
| System Type | Single Zone |
| BTU Rated | 18,000 |
| Power Source | 208–230V, 1Ph, 60Hz |
| Voltage Range | 187–253V |
| Dehumidification | 3.57 pints/day |
| Filter Dimensions (W×D) | Field supply (unit without filter 16×20) |
| Controller | Wire controller + remote controller available |
| Refrigerant Piping (Liquid/Gas) | 1/4" / 1/2" |
| EER2 | 12 |
| SEER2 | 18 |
| Minimum Circuit Ampacity | 3.5A |
| Max Fuse | 15A |
| Indoor Noise Level (H/M/L) | 42.5 / 37.5 / 30 |
| Indoor Air Flow | 618.0 / 576.8 / 529.7 / 488.5 |
| ESP Range | 0–0.8 |
| Drainage Water Pipe Diameter | 3/4" |
| Operation Range – Heating | 32–86°F |
| Operation Range – Cooling | 60–90°F |
| Unit Dimensions (W×H×D) | 17.52 × 21.02 × 45 in |
| Packing Dimensions (W×D×H) | 20.87 × 26.57 × 48.62 in |
| Unit Net / Gross Weight | 104.72 / 125.66 lb |
Outdoor Specs (CH-RES18-230VO)
| Spec | Value |
|---|---|
| Refrigerant Type | R454B |
| System Type | Single-zone unit |
| BTU Rated | 18,000 |
| Power Source | 208–230V, 1Ph, 60Hz |
| Voltage Range | 187–253V |
| Dehumidification | 3.09 pints/day |
| Max Pipe Length | 98.4 ft |
| Max Height Difference (Indoor↔Outdoor) | 65.6 ft |
| Refrigerant Piping (Liquid/Gas) | 1/4" / 1/2" |
| HSPF2-5 / HSPF2-4 | 8.2 / 10.5 |
| EER2 | 12.5 |
| SEER2 | 20 |
| Cooling Capacity (Min/Max) | 17,000 (7,000–19,000) BTU/h |
| Heating Capacity (Min/Max) | 20,000 (5,500–22,000) BTU/h |
| COP | 3.47 |
| Ambient Temperature – Heating | -13 to 75°F |
| Ambient Temperature – Cooling | -13 to 122°F |
| Refrigerant Precharge | 25 |
| Outdoor Noise Level | 59 |
| Outdoor Air Flow | 1,765.8 |
| Minimum Circuit Ampacity | 18A |
| Max Fuse | 20A |
| Additional Refrigerant Charge (1/4 liquid line) | 0.16 |
| Unit Dimensions (W×H×D) | 35.04 × 13.46 × 26.50 in |
| Packing Dimensions (W×D×H) | 39.17 × 15.67 × 29.13 in |
| Unit Net / Gross Weight | 92.59 / 100.31 lb |
| AHRI | 207742320 |
Documents & Downloads
- Submittal (Hyper Pairing): CH-RHP18-230VO + CH-RS18MAHU
- Submittal (Regular Pairing): CH-RES18-230VO + CH-RS18MAHU
- Indoor Manuals
- 120N Wire Controller — Owner’s Manual
- NR Heater — Installation Manual
- RS AHU — Installation Manual
- RS AHU — Owner Manual
- AHU Leaflet — R454B (2025)
- Outdoor Manual
- Installation Manual — R454B Outdoor Units
- SlimDuct Leaflet — R454B
- Video: Cooper&Hunter Multi-Position Air Handler with R454B Refrigerant
Important
- Line set: 1/4" liquid and 1/2" suction (gas).
- Max piping: 98.4 ft total length and 65.6 ft vertical separation.
- Outdoor electrical: MCA 18A, max fuse 20A.
- Indoor electrical: MCA 3.5A, max fuse 15A.
- Field-supplied filter: unit without filter is sized for 16×20.
- Support: hvacsupplies.com/pages/contact • (800) 543-8933
FAQs
What’s the difference between Hyper and Regular outdoor units?
The Hyper model supports heating operation down to -22°F ambient, while the Regular model supports down to -13°F.
What line set size does this system use?
1/4" liquid line and 1/2" suction (gas) line.
Can the indoor air handler be installed horizontally or vertically?
Yes. It supports horizontal and vertical installation.
Does the air handler require a filter?
Filter is field-supplied. Unit without filter is sized for a 16×20 filter.
What is the indoor drain connection size?
3/4" drainage water pipe diameter.
What is the maximum piping length and vertical separation?
98.4 ft maximum piping length and 65.6 ft maximum height difference.
What electrical does it use?
208–230V, 1Ph, 60Hz. Voltage range: 187–253V. Outdoor MCA 18A (max fuse 20A). Indoor MCA 3.5A (max fuse 15A).
What are the outdoor capacity ranges?
Hyper cooling: 17,000 (6,500–18,800) BTU/h; Hyper heating: 19,000 (8,900–22,000) BTU/h. Regular cooling: 17,000 (7,000–19,000) BTU/h; Regular heating: 20,000 (5,500–22,000) BTU/h.
