Cooper&Hunter 2-Zone Ductless Mini Split AC & Heat Pump 28000 BTU (18K+18K), Ceiling Cassettes Units, 230V
The Cooper & Hunter system features a 28000 BTU outdoor unit paired with CH-R28MES-230VO + 2X CH-RH18MCT wall-mounted indoor units. This high-efficiency model with auto-swing louvers will heat & cool down to -13 F. The DC inverter heat pump provides independent control in 2 zones.
Key features
Comfort & airflow
- 2-zone independent temperature control
- Auto-swing louvers (horizontal + vertical)
- Follow Me mode (remote-based temperature sensing)
- Turbo mode for rapid cooling/heating
- Sleep mode + Timer On/Off scheduling
- New user-friendly remote controller design
Efficiency & protection
- High efficiency operation (25 SEER2)
- Low-ambient performance down to -13 F
- 46°F Freeze Protection
- Self-Clean function (single-zone only, if equipped)
- Eco mode (single-zone only, if equipped)
Build & materials
- TU1 copper tubes
- Quiet operation (Outdoor as low as 61 dB(A); Indoor as low as 27.5 dB(A))
At-a-glance
2 zones
28000
25
-13 F
61 dB(A)
27.5 dB(A)
CH-R28MES-230VO
Smart Kit Included
Warranty requires licensed HVAC installation and registration within 60 days (if required).
Control options
- Smart Kit included with downloadable C&H app
- Remote control included
- Wall thermostat compatible (purchased separately, if supported by the model)
Outdoor technology
- High-Frequency Racer Technology: helps the compressor reach maximum speed within ~6 seconds on startup
- Electronic expansion valve: manages refrigerant flow for stable performance
- Intelligent dusting switch: reverses the fan to help clear dust/sand/debris from the coil
- Genius Core ultra-low compressor speed of 12Hz
Installation & electrical
- Indoor line sizes (varies by head): 1/4"/1/2"
- Refrigerant precharge: 100
- Additional refrigerant charge (1/4 liquid line): 0.16
- Additional refrigerant charge (3/8 liquid line): 0.32
- Minimum circuit ampacity: 23
- Max fuse / breaker: 25
Use the installation manual to confirm charge units and when additional charge is required (based on line length and piping configuration).
Product video
What’s included
Cooper & Hunter Four Way Ceiling Cassette Ductless Mini Split System
Outdoor Unit: 28000 BTU (1 pc) — Model: CH-R28MES-230VO
Indoor Units:
- 18,000 BTU (x2) — Model: CH-RH18MCT
- Installation Kits options (No Installation / 16 ft / 25 ft / 50 ft)
- (INSTALLATION KIT SIZE MUST BE SELECTED, TO INCLUDE)
- Wireless Remote Controls (2 remotes)
- Wi-Fi Adapter (17310900A05963)
- Installation Manual
- User's Manual
- Manufacturer Warranty
Complete technical specifications — Indoor
Indoor Unit Specifications — CH-RH18MCT
| Refrigerant type | R454B |
|---|---|
| System type | Single Zone |
| Filter dimensions (WxD) (inch) | / |
| BTU Rated | 18,000 |
| Power source | 208-230V, 1Ph, 60Hz |
| Dehumidification value (pnt/day) | 4.23 |
| Voltage range (V) | 187-253 |
| Packing dimensions (WxDxH) | 28.15 x 25.20 x 11.61 |
| Controller | wire controller + remote controller available |
| Refrigerant piping Liquid/Gas side (inch) | 1/4"/1/2" |
| EER2 | 12.5 |
| SEER2 | 20 |
| Unit Net/Gross weight | 35.27/41.89 |
| Unit dimensions (W*H*D) | 22.44 x 22.44 x 9.65 |
| Operation Range - Heating | 32~86 |
| Operation Range - Cooling | 60~90 |
| Minimum circuit ampacity | 3 |
| Max.fuse | 15 |
| Indoor Noise Level H/M/L | 44.5/41/27.5 |
| Indoor Air Flow | 447.3 / 388.5 / 317.8 / 194.2 |
| ESP Range | / |
| Drainage water pipe diameter | 1" |
Manuals
- https://media.cooperandhunter.us/3309/120N--uses-and-installation-manual.pdf
- https://media.cooperandhunter.us/4654/Installation-manual-R454B-Ceiling-cassette_compressed.pdf
- https://media.cooperandhunter.us/4655/Owners_-manual-R454B-Ceiling-cassette_compressed.pdf
Submittals
- https://media.cooperandhunter.us/4678/CH-RES18-230VO_CH-RH18MCT.pdf
- https://media.cooperandhunter.us/4686/CH-RHP18-230VO_CH-RH18MCT.pdf
Documents
Complete technical specifications — Outdoor
Outdoor Unit Specifications — CH-R28MES-230VO
| Refrigerant type | R454B |
|---|---|
| System type | Multi-zone unit |
| Power source | 208-230V, 1Ph, 60Hz |
| Dehumidification value (pnt/day) | 1.69 |
| Voltage range (V) | 187-253 |
| Packing dimensions (WxDxH) | 42.91 x 19.68 x 34.84 |
| Refrigerant piping Liquid/Gas side (inch) | 4x1/4" - 3x3/8"+1x1/2" |
| HSPF2-5 | 7.4 |
| HSPF2-4 | 9.5 |
| EER2 | 13 |
| Cooling capacity (Min/Max) (BTU/h) | 27,000(7,200~32,000) |
| SEER2 | 25 |
| Unit Net/Gross weight | 138.89/149.69 |
| Unit dimensions (W*H*D) | 37.24 x 16.14 x 31.89 |
| Refrigerant precharge | 100 |
| Outdoor Noise Level | 61 |
| Outdoor Air Flow | 2,130.7 |
| Minimum circuit ampacity | 23 |
| Max.fuse | 25 |
| Max height difference between Indoor and Outdoor unit | 49.2 |
| Heating capacity (Min/Max) (Btu/h) | 27,000(8,400~29,000) |
| COP | 3.8 |
| Ambient temperature - Heating (F) | -13~75 |
| Ambient temperature - Cooling (F) | -13~122 |
| Additional Refrigerant Charge 3/8 liquid line | 0.32 |
| Additional Refrigerant Charge 1/4 liquid line | 0.16 |
Manuals
Submittals
- https://media.cooperandhunter.us/4445/CH-R28MES-230VO.pdf
- https://media.cooperandhunter.us/4446/CH-R28MES-230VO-non.pdf
Documents
Warranty information
- 7-Year Compressor Warranty
- 5-Year Parts Warranty
- 1-Year Remote Control Warranty
Note: Warranty valid only when installed by a licensed HVAC technician and registered within 60 days of installation.
Summary
Expand
The Cooper & Hunter system features a 28000 BTU outdoor unit paired with CH-R28MES-230VO + 2X CH-RH18MCT wall-mounted indoor units. This high-efficiency model with auto-swing louvers will heat & cool down to -13 F. The DC inverter heat pump provides independent control in 2 zones.
