COOPER & HUNTER — Multi-Zone Slim Duct
Cooper&Hunter 2-Zone Ducted Mini Split AC & Heat Pump 28000 BTU (9K+9K), Slim Duct Units, 230V - R410A
This Cooper & Hunter multi-zone system pairs a 28000 BTU outdoor unit with CH-28MES-230VO + 2X CH-M09DTUI slim duct indoor units (one per zone). Light Commercial Slim Ducts provide an inconspicuous solution hidden in attics and ceiling spaces—delivering comfort without the energy loss associated with traditional central ducted systems. Duct runs can be directed into separate areas and are collectively controlled by a wall thermostat.
2 Zone(s)
28000 BTU Outdoor
SEER2 24.6
Heats to -13 F
Refrigerant: R410A
Outdoor SKU CH-28MES-230VO
Wall Thermostat Included
SmartPort Ready
Key features
Slim duct comfort
- Slim duct indoor heads (one per zone) for concealed installation
- Flexible installation for attics and ceiling crawl spaces
- Multi-channel air distribution to serve multiple areas
- Lower noise operation
- Higher pipe limits (model dependent)
- Fresh air function (if equipped)
Performance & compatibility
- Available slim duct capacities: 24K, 36K, 48K, and 60K (varies by model)
- Efficiency up to 20.5 SEER (model dependent)
- Compatible with Regular or Hyper Heat outdoor units (as applicable)
- Built-in water pump (if equipped)
- Golden fin (outdoor and indoor) for corrosion resistance
Controls
- Wall thermostat included
- Wired control support (if equipped)
- Remote control included
- SmartPort Ready for smart control integration
At-a-glance
Zoning
2 zones
2 zones
Indoor type
Slim duct
Slim duct
Outdoor BTU
28000
28000
SEER2
24.6
24.6
Low ambient
-13 F
-13 F
Refrigerant
R410A
R410A
Outdoor SKU
CH-28MES-230VO
CH-28MES-230VO
Primary control
Wall thermostat
Wall thermostat
Smart
SmartPort Ready
SmartPort Ready
Warranty requires licensed HVAC installation and registration within 60 days (if required).
Control options
- Wall thermostat included (collective control)
- Remote control included
- SmartPort Ready for smart control add-ons/integration
- Wired control (if equipped)
Outdoor technology
- High-Frequency Racer Technology: enables the compressor to reach maximum speed within ~6 seconds on startup
- Intelligent dusting switch: reverses the fan to help clear dust, sand, and other debris from the coil
- Golden fin (outdoor coil) for corrosion resistance (if equipped)
Refrigerant information
- Refrigerant type: R410A
- R410A note: R410A is a high-pressure refrigerant used in many ductless systems. Service tools, gauges, and recovery equipment must be rated for R410A pressures.
- Charging: Follow the installation manual for the required charge method and any additional charge per foot beyond the factory pre-charge.
- Installation best practice: Keep the refrigeration circuit sealed and dry to reduce moisture exposure during installation/service.
{REFRIGERANT_NOTE}
Installation & electrical
- Indoor line sizes (varies by duct unit): 1/4" - 3/8''
- Refrigerant: R410A
- Factory pre-charge: up to 75
- Additional refrigerant charge (1/4 liquid line): 0.16
- Additional refrigerant charge (3/8 liquid line): 0.32
- Minimum circuit ampacity: 24.5
- Max fuse / breaker: 30
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 Multi-Zone Slim Duct System
Outdoor Unit: 28000 BTU (1 pc) — Model: CH-28MES-230VO
Indoor Units (Slim Duct):
- 9,000 BTU (x2) — Model: CH-M09DTUI
- Installation Kits options (No Installation / 16 ft / 25 ft / 50 ft)
- (INSTALLATION KIT SIZE MUST BE SELECTED, TO INCLUDE)
- Wall thermostat
- Remote control(s)
- Installation Manual
- User's Manual
- Manufacturer Warranty
Complete technical specifications — Indoor
Indoor Unit Specifications — CH-M09DTUI
| System type | Single/Multi-zone unit |
|---|---|
| BTU Rated | 9,000 |
| Power source | 208-230V, 1Ph, 60Hz |
| Dehumidification value (pnt/day) | 2.11 |
| Voltage range (V) | 187-253 |
| Packing dimensions (WxDxH) | 33.86x21.26x11.22 |
| Controller | RG10K-exclusive remote&120X or 120N wire controller |
| Refrigerant piping Liquid/Gas side (inch) | 1/4" - 3/8'' |
| EER2 | 13.2 |
| SEER2 | 20.2 |
| Unit Net/Gross weight | 39.02/48.28 |
| Unit dimensions (W*H*D) | 27.56x19.92x7.87 |
| Operation Range - Heating | 32~86 |
| Operation Range - Cooling | 62～90 |
| Minimum circuit ampacity | 1.3 |
| Max.fuse | 15 |
| Indoor Noise Level H/M/L | 33.5/28.5/27 |
| Indoor Air Flow | 352.94/282.35/176.47 |
| ESP Range | 0-0.32 |
| Drainage water pipe diameter | 1" |
Manuals
- https://media.cooperandhunter.us/3778/Cassette-installation-users_-manual.pdf
- https://media.cooperandhunter.us/1170/SUBMITTAL-DATA-SHEET-SOPHIA-DUCT-CH-M09DTUI.pdf
- https://media.cooperandhunter.us/1171/SUBMITTAL-DATA-SHEET-SOPHIA-DUCT-CH-M09DTUI%2BCH-09SHP-230VO.pdf
- https://media.cooperandhunter.us/1172/SUBMITTAL-DATA-SHEET-SOPHIA-DUCT-CH-M09DTUI%2BCH-HYP09SHP230VO.pdf
- https://media.cooperandhunter.us/1145/WIRED-CONTROL-FOR-AIR-CONDITIONER-INSTALLATION-MANUAL.pdf
- https://media.cooperandhunter.us/1127/SOPHIAMULTI-BOOKLET.pdf
- https://media.cooperandhunter.us/1254/Sophia_Single_Booklet.pdf
- https://media.cooperandhunter.us/3848/SlimDuct-Leaflet-2024.pdf
- https://media.cooperandhunter.us/1126/QUICK-START-GUIDE.pdf
- https://media.cooperandhunter.us/2272/Duct-9KHyper-Submittal%C2%A0sheet.pdf
- https://media.cooperandhunter.us/2273/Duct-9KSubmittal%C2%A0.pdf
- https://media.cooperandhunter.us/3014/Installation-manual-Duct-09-24.pdf
- https://media.cooperandhunter.us/3015/Users-manual-Duct-09-24.pdf
Submittals
- https://media.cooperandhunter.us/3200/CH-M09DTUI.pdf
- https://media.cooperandhunter.us/3236/CH-ES09-230VO-%2B-CH-M09DTUI.pdf
- https://media.cooperandhunter.us/3240/CH-HPR09-230VO-%2B-CH-M09DTUI.pdf
Documents
Complete technical specifications — Outdoor
Outdoor Unit Specifications — CH-28MES-230VO
| Refrigerant type | R410A |
|---|---|
| System type | Multi-zone unit |
| BTU Rated | 28,000 |
| Power source | 208-230V, 1Ph, 60Hz |
| Dehumidification value (pnt/day) | 4.14 |
| Max. pipe length (ft) | 197 |
| Voltage range (V) | 187-253 |
| Packing dimensions (WxDxH) | 42.91x19.69x34.84 |
| Refrigerant piping Liquid/Gas side (inch) | 3x1/4" - 3x3/8" |
| HSPF2-5 | 7.1 |
| HSPF2-4 | 9.3 |
| EER2 | 12.7 |
| Cooling capacity (Min/Max) (BTU/h) | 28,000(9,838~30,438) |
| SEER2 | 24.6 |
| Unit Net/Gross weight | 139.77/150.57 |
| Unit dimensions (W*H*D) | 37.24x16.14x31.89 |
| Refrigerant precharge | up to 75 |
| Outdoor Noise Level | 61 |
| Outdoor Air Flow | 2,129.41 |
| Minimum circuit ampacity | 24.5 |
| Max.fuse | 30 |
| Max height difference between Indoor and Outdoor unit | 49.21 |
| Heating capacity (Min/Max) (Btu/h) | 28,000(8,218~31,000) |
| COP | 3.73 |
| Ambient temperature - Heating (F) | -13~75 |
| Ambient temperature - Cooling (F) | 5~122 |
| Additional Refrigerant Charge 3/8 liquid line | 0.32 |
| Additional Refrigerant Charge 1/4 liquid line | 0.16 |
Manuals
- https://media.cooperandhunter.us/3755/Multi-Zone-Leaflet-2024.pdf
- https://media.cooperandhunter.us/4433/Installation-manual.pdf
Submittals
- https://media.cooperandhunter.us/3162/CH-28MES-230VO-%28Ducted%29.pdf
- https://media.cooperandhunter.us/3163/CH-28MES-230VO-%28Non-ducted%29.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
This Cooper & Hunter multi-zone system uses slim duct indoor units for concealed installation and flexible air distribution. It pairs a 28000 BTU outdoor unit with CH-28MES-230VO + 2X CH-M09DTUI indoor units for collective thermostat control across 2 zones, with SmartPort-ready options and R410A refrigerant.
