
Multi-Position Air Handler + Outdoor Unit • R454B • 208–230V
Cooper&Hunter 24,000 BTU High Efficiency Multi Position Air Handler Unit Ducted Heat Pump Split System R454B 230V
Overview
24K multi-position air handler paired with a regular single-zone outdoor condenser for efficient heating and cooling. Flexible indoor installation plus inverter-driven operation support consistent comfort.
Highlights
System Search
Voltage
208–230V (1Ph, 60Hz)
Voltage Range
187–253V
Outdoor MCA / Max Fuse
24A / 25A
Indoor MCA / Max Fuse
4A / 15A
Drain Size
3/4"
- Multi-position indoor install (horizontal or vertical)
- Inverter-driven operation supports steady temperature control
- Refrigerant leak detection and wired controller support
What’s Included
- Indoor unit: CH-RS24MAHU
- Outdoor unit: CH-RES24-230VO
- Remote control and wall thermostat
- Wired controller support
- Smart kit connectivity support
- Optional auxiliary heater support (purchased separately)
Indoor Specs (CH-RS24MAHU)
| Spec | Value |
|---|---|
| Refrigerant Type | R454B |
| System Type | Single Zone |
| BTU Rated | 24,000 |
| Power Source | 208–230V, 1Ph, 60Hz |
| Voltage Range | 187–253V |
| Dehumidification | 4.8 pints/day |
| Filter Dimensions (W×D) | Field supply (unit without filter 16×20) |
| Controller | Wire controller + remote controller available |
| Refrigerant Piping (Liquid/Gas) | 3/8" / 5/8" |
| EER2 | 12 |
| SEER2 | 18.7 |
| Minimum Circuit Ampacity | 4A |
| Max Fuse | 15A |
| Indoor Noise Level (H/M/L) | 43.5 / 40 / 25.5 |
| Indoor Air Flow | 824.0 / 759.3 / 694.5 / 629.8 |
| 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 | 104.28 / 125.88 lb |
Outdoor Specs (CH-RES24-230VO)
| Spec | Value |
|---|---|
| Refrigerant Type | R454B |
| System Type | Single-zone unit |
| BTU Rated | 24,000 |
| Power Source | 208–230V, 1Ph, 60Hz |
| Voltage Range | 187–253V |
| Dehumidification | 4.52 pints/day |
| Max Pipe Length | 164 ft |
| Max Height Difference (Indoor↔Outdoor) | 82 ft |
| Refrigerant Piping (Liquid/Gas) | 3/8" / 5/8" |
| HSPF2-5 / HSPF2-4 | 8.5 / 11 |
| EER2 | 12.5 |
| SEER2 | 19 |
| Cooling Capacity (Min/Max) | 24,000 (8,500–28,300) BTU/h |
| Heating Capacity (Min/Max) | 25,000 (11,800–35,100) BTU/h |
| COP | 3.64 |
| Ambient Temperature – Heating | -13 to 75°F |
| Ambient Temperature – Cooling | -13 to 122°F |
| Refrigerant Precharge | 25 |
| Outdoor Noise Level | 60 |
| Outdoor Air Flow | 2,236.7 |
| Minimum Circuit Ampacity | 24A |
| Max Fuse | 25A |
| Additional Refrigerant Charge (3/8 liquid line) | 0.32 |
| Unit Dimensions (W×H×D) | 37.24 × 16.14 × 31.89 in |
| Packing Dimensions (W×D×H) | 42.91 × 19.68 × 34.84 in |
| Unit Net / Gross Weight | 122.13 / 132.28 lb |
| AHRI | 207742320 |
Documents & Downloads
- Submittal (This Pairing): CH-RES24-230VO + CH-RS24MAHU
- Additional Submittals (Outdoor)
- CH-RES24-230VO + CH-PRO24MASTWM-230VI
- CH-RES24-230VO + CH-RH24MASTWM-230VI
- CH-RES24-230VO + CH-RS24MDT-HS
- CH-RES24-230VO + CH-RSH24MFC
- CH-RES24-230VO + CH-RH24MCT
- CH-RES24-230VO + CH-RSH24MCT
- 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 Manuals
- Installation Manual — R454B Outdoor Units
- SlimDuct Leaflet — R454B
Important
- Line set: 3/8" liquid and 5/8" suction (gas).
- Max piping: 164 ft total length and 82 ft vertical separation.
- Outdoor electrical: MCA 24A, max fuse 25A.
- Indoor electrical: MCA 4A, 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?
Hyper supports heating operation down to -22°F ambient; Regular supports down to -13°F.
What line set size does this system use?
3/8" liquid line and 5/8" suction (gas) line.
What is the maximum piping length and vertical separation?
164 ft maximum piping length and 82 ft maximum height difference.
What are the outdoor capacity ranges?
Regular cooling: 24,000 (8,500–28,300) BTU/h. Regular heating: 25,000 (11,800–35,100) BTU/h.
What electrical does it use?
208–230V, 1Ph, 60Hz. Voltage range: 187–253V. Outdoor MCA 24A (max fuse 25A). Indoor MCA 4A (max fuse 15A).
























































































