COOPER & HUNTER — One-Way Ceiling Cassette
Cooper&Hunter 2-Zone Ductless Mini Split AC & Heat Pump 18000 BTU (12K+12K), One-Way Ceiling Cassettes Units, 230V
Enjoy targeted, low-profile comfort with the Cooper & Hunter One-Way Ceiling Cassette system. A 18000 BTU outdoor condenser powers cassette heads designed to fit neatly between ceiling joists for a clean, built-in look and focused, directional airflow. This inverter heat pump provides independent control in 2 zones and delivers low-ambient heating performance down to -13 F.
One-Way cassettes use TU1 copper heat exchangers, an integrated condensate pump, and built-in Smart Kit app control. The R454B refrigerant supports efficient operation up to 25.1 SEER2. On supported 6K–12K models, the ENC1 dip-switch allows on-site capacity selection for added flexibility.
One-Way Cassette
2 Zone(s)
18000 BTU Outdoor
SEER2 25.1
Heats to -13 F
Outdoor SKU CH-R18MES-230VO
Outdoor noise: 59.5 dB(A)
Indoor noise (min): 33 dB(A)
Built-in Smart Kit
Built-in drain pump
Key features
Designed for tight spaces
- Low-profile cassette design fits cleanly between structural ceiling beams
- Installation flexibility: requires only a ~3-inch wall penetration for conduits (typical install)
- Double-row tack holes help adapt mounting to different joist sizes
- Industry-exclusive 2-way installation (where supported) for easier placement and service access
Comfort & control
- 2-zone independent temperature control
- Precisely cool & heat only the areas you need
- Customized settings for different spaces with different comfort demands
- Turbo operation + multiple fan speeds
- Quiet operation (Outdoor as low as 59.5 dB(A); Indoor as low as 33 dB(A))
Built-in components
- Built-in water / condensate pump for reliable drainage
- Built-in circuit breaker (model dependent) for simpler, safer servicing
- TU1 copper heat exchangers for durability
- Sensors for comfort optimization (humidity/refrigerant detection where equipped)
Panel dimension note: One-Way cassette panel size may be consistent across indoor units (example: 53.25 × 18.5 × 1 in; panel included), but confirm exact dimensions in the indoor unit spec table for your model.
At-a-glance
Zones
2
2
Outdoor BTU
18000
18000
SEER2
25.1
25.1
Low ambient
-13 F
-13 F
Outdoor noise
59.5 dB(A)
59.5 dB(A)
Indoor noise (min)
33 dB(A)
33 dB(A)
Outdoor SKU
CH-R18MES-230VO
CH-R18MES-230VO
Smart control
Built-in Smart Kit
Built-in Smart Kit
Warranty requires licensed HVAC installation and registration within 60 days (if required).
Control options
- Smart Kit built in with downloadable C&H app
- Remote control included
- Wall thermostat (purchased separately)
Product video
What’s included
Cooper & Hunter One-Way Cassette Mini Split System
Outdoor Unit: 18000 BTU (1 pc) — Model: CH-R18MES-230VO
Indoor Units (One-Way Cassette):
- 6,000-12,000 BTU (x2) — Model: CH-RSH06-12MCT1W
Capacity Selection (Dip-Switch ENC1)
- Set ENC1 from “0” to "1" → 6,000 BTU
- Set ENC1 from “0” to "2" → 9,000 BTU
- Set ENC1 from “0” to "3" → 12,000 BTU
- Installation-Kit options (No Kit / 16 ft / 25 ft / 50 ft)
- (INSTALLATION KIT SIZE MUST BE SELECTED, to be included)
- Wireless Remote Controls (2 remotes)
- Built-in Smart-Kit & C&H App control
- Wall Thermostat (purchased separately)
- Installation & User Manuals
- Manufacturer Warranty
Complete technical specifications — Indoor (One-Way Cassette)
Indoor Unit Specifications — CH-RSH06-12MCT1W
| Refrigerant type | R454B |
|---|---|
| System type | Single Zone |
| Filter dimensions (WxD) (inch) | / |
| BTU Rated | 12,000 |
| Power source | 208-230V, 1Ph, 60Hz |
| Dehumidification value (pnt/day) | 3.57 |
| Voltage range (V) | 187-253 |
| Packing dimensions (WxDxH) | 57.60 x 22.48 x 22.64 |
| Controller | wire controller + remote controller available |
| Refrigerant piping Liquid/Gas side (inch) | 1/4"/3/8" |
| EER2 | 13 |
| SEER2 | 23 |
| Unit Net/Gross weight | 45.19/82.45 |
| Unit dimensions (W*H*D) | 50.31 x 13.19 x 8.98 |
| Operation Range - Heating | 32~86 |
| Operation Range - Cooling | 60~90 |
| Minimum circuit ampacity | 3 |
| Max.fuse | 15 |
| Indoor Noise Level H/M/L | 41/37/33 |
| Indoor Air Flow | 353.2 / 312 / 282.5 / 247.2 |
| ESP Range | / |
| Drainage water pipe diameter | 3/4" |
Manuals
- https://media.cooperandhunter.us/4403/Owner_s-Manual_One-Way-Cassette.pdf
- https://media.cooperandhunter.us/2779/Remote-controller-manual.pdf
- https://media.cooperandhunter.us/4404/OneWayCassette-R454B-Leflet.pdf
Submittals
- https://media.cooperandhunter.us/4380/CH-RES09-230VO%3ACH-RSH06-12MCT1W.pdf
- https://media.cooperandhunter.us/4381/CH-RES12-230VO%3ACH-RSH06-12MCT1W.pdf
- https://media.cooperandhunter.us/4383/CH-RHP06F9-230VO%3ACH-RSH06-12MCT1W.pdf
- https://media.cooperandhunter.us/4384/CH-RHP09-230VO%3ACH-RSH06-12MCT1W.pdf
- https://media.cooperandhunter.us/4385/CH-RHP12-230VO%3ACH-RSH06-12MCT1W.pdf
Documents
Complete technical specifications — Outdoor
Outdoor Unit Specifications — CH-R18MES-230VO
| Refrigerant type | R454B |
|---|---|
| System type | Multi-zone unit |
| Power source | 208-230V, 1Ph, 60Hz |
| Dehumidification value (pnt/day) | 0.42 |
| Voltage range (V) | 187-253 |
| Packing dimensions (WxDxH) | 40.55 x 17.24 x 29.53 |
| Refrigerant piping Liquid/Gas side (inch) | 3x1/4"- 3x3/8" |
| HSPF2-5 | 7.8 |
| HSPF2-4 | 9.8 |
| EER2 | 14 |
| Cooling capacity (Min/Max) (BTU/h) | 18,000(5,400~21,600) |
| SEER2 | 25.1 |
| Unit Net/Gross weight | 100.53/109.35 |
| Unit dimensions (W*H*D) | 35.04 x 13.46 x 26.50 |
| Refrigerant precharge | 75 |
| Outdoor Noise Level | 59.5 |
| Outdoor Air Flow | 1,765.8 |
| Minimum circuit ampacity | 16 |
| Max.fuse | 20 |
| Max height difference between Indoor and Outdoor unit | 49.2 |
| Heating capacity (Min/Max) (Btu/h) | 19,000(5,700~21,600) |
| 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/4443/CH-R18MES-230VO.pdf
- https://media.cooperandhunter.us/4444/CH-R18MES-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
This Cooper & Hunter One-Way Ceiling Cassette system uses a 18000 BTU outdoor condenser with CH-R18MES-230VO + 2X CH-RSH06-12MCT1W low-profile cassette heads for targeted airflow and a clean ceiling finish. Independent control supports 2 zones, with low-ambient heating performance down to -13 F.
