Cooper & Hunter 18,000 BTU Indoor Slim Duct, 230V, R454B - Ductless Mini Split Air Conditioner Heat Pump
Cooper & Hunter7-Yr WarrantySKU: CH-RS18MDT-MS-NO
Product specifications
- Voltage
- 230V
- SEER
- 21.4
- WiFi
- Not Included
- Type
- Concealed Duct
- Freon
R454B
Choose Your Configuration
“No Installation Kit” ships the units only.
Save 10% on these accessories
ARMBRIDGE Mini Split Wall Mounting Bracket High Load Capacity Zinc, Vibration-Absorbing (Up to 550 lbs Each)-10%$49.00
ARMBRIDGE Heavy-Duty Mini Split Ground Stand, Zinc-Coated Brackets for 24,000–60,000 BTU Units Weatherproof Design, 330+ lbs Capacity-10%$89.00
ARMBRIDGE 30 AMP Fusible Metallic Disconnect Box Durable Enclosed Disconnect for Residential and Light Commercial HVAC Systems-10%$29.00
ARMBRIDGE Non-Metallic A/C Whip 3/4" x 6 ft – Pre-Wired Liquid tight Conduit with 8/2 & 10/1 Wires for HVAC & Air Conditioner Power Connection-10%$34.00
FREE Delivery
Ships from the nearest of our three US warehouses, leaves in 1–2 business days. Shipping policy
COOPER & HUNTER · CONCEALED DUCT
Built for year-round comfort
CH-RS18MDT-MS-NO
System Specs
| Cooling Capacity | 18,000 BTU/h |
|---|---|
| SEER2 | 21.4 |
| Voltage | 230V |
| Refrigerant | R454B |
| Compressor | Inverter |
|---|---|
| Sound Level (indoor) | 40/39/38 dB |
| Warranty | 7-Yr Compressor |
Indoor Unit Specs
| Unit Dimensions (WxDxH) | Net / Gross Weight | Remote Control |
|---|---|---|
| 34.65 × 26.54 × 8.27 in | 54.45 / 66.14 lb | Wire controller + remote controller available |
Product Description
The Cooper & Hunter 18,000 BTU slim duct (concealed) is a slim duct (concealed) indoor unit for Cooper & Hunter ductless mini split systems, running on R454B refrigerant. It mounts in a single room or zone and is controlled independently with its included remote — pair it with a compatible outdoor condenser to complete your system.
6 Modes for Maximum Comfort
Engineered to adapt to every season, every room, every need.
Maintain a comfortable indoor temperature by automatically switching between heating and cooling as needed. Ideal for year-round use.
WARRANTY
BACKED BY COOPER & HUNTER
Industry-leading protection on every unit
Compressor: 7-year coverage
With product registration after professional installation.
Parts & components: 5-year coverage
All major components and refrigerant circuit parts.
Technical Specifications
Indoor Unit Specs— CH-RS18MDT-MS
| Model | CH-RS18MDT-MS |
|---|---|
| Unit Dimensions (WxDxH) | 34.65 x 26.54 x 8.27 in |
| Net/Gross Weight | 54.45/66.14 lb |
| Packing Dimensions (WxDxH) | 42.13 x 28.54 x 11.02 in |
| Power Supply | 208-230V, 1Ph, 60Hz |
| Maximum Fuse Size | 15 A |
| Min. Circuit Ampacity | 3 A |
| Copper Line Size (Liquid/Gas) | 1/4"/1/2" |
| Noise Level (Hi/Med/Lo) | 40/39/38 dB |
| Dehumidification | 3.53 pt/h |
| Filter Dimensions | 30.2x7.47 in |
| Drain Pipe Diameter | 1" |
| Controller | wire controller + remote controller available |
Series Comparison Table
Technical specifications for every model in the series — this product is one of them.
Indoor
| Specification | CH-RS18MDT-MSThis model | CH-RS06MDT-MSCH-RS06-12MDT-MS (Dip Switch 6) | CH-RS09MDT-MSCH-RS06-12MDT-MS (Dip Switch 9) | CH-RS12MDT-MSCH-RS06-12MDT-MS (Dip Switch 12) | CH-RS24MDT-HS | CH-RS36LCDT-HS | CH-RS48LCDT-HS | CH-RS60LCDT-HS |
|---|---|---|---|---|---|---|---|---|
| Power Supply | 208/230,1, 60 | 208/230,1, 60 | 208/230,1, 60 | 208/230,1, 60 | 208/230,1, 60 | 208/230,1, 60 | 208/230,1, 60 | 208/230,1, 60 |
| Rated Capacity | 17,000/19,000 | 6,500/8,000 | 9,000/10,000 | 12,000/12,500 | 24,000/26,000 | 36,000/42,000 | 48,000/52,000 | 55,000/60,000 |
| Minimum Circuit Ampacity (MCA) | 3 | 3 | 3 | 3 | 3 | 4 | 5 | 5 |
| Max. Fuse | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Indoor Air Flow (Turbo/Hi/Mi/Lo/Si) CFM | 600.4/559.2/500.3/441.4/NA | 323.7/264.9/206.0/147.2/117.7 | 323.7/264.9/206.0/147.2/117.7 | 400.2/323.7/264.9/176.6/117.7 | 853.5/706.3/618.0/500.3/NA | 1236.1/1059.5/941.8/766.5/NA | 1648.1/1471.5/1294.9/1059.5/NA | 2001.2/1706.9/1412.6/1118.3/NA |
| Indoor Noise Level (Turbo/Hi/Mi/Lo/Si) dB(A) | NA/40/39/38/32 | NA/32.5/30.5/29.5/22 | NA/32.5/31/29.5/23 | NA/36/34.5/32.5/25.5 | NA/40/37/35/29.5 | NA/45/40/34/31 | NA/51/46/42/40 | NA/52/48/42/41 |
| Dimension (WxDxH) inch | 34.65 x 26.54 x 8.27 | 27.56 x 19.92 x 7.87 | 27.56 x 19.92 x 7.87 | 27.56 x 19.92 x 7.87 | 39.37 x 29.53 x 9.65 | 47.24 x 29.53 x 11.81 | 47.24 x 29.53 x 11.81 | 55.12 x 31.50 x 14.96 |
| Packing (WxDxH) inch | 42.13 x 28.54 x 11.02 | 33.86 x 21.26 x 11.22 | 33.86 x 21.26 x 11.22 | 33.86 x 21.26 x 11.22 | 48.23 x 33.86 x 11.97 | 56.10 x 33.86 x 14.13 | 56.10 x 33.86 x 14.13 | 62.99 x 36.02 x 17.52 |
| Net/Gross Weight lbs. | 54.45/66.14 | 39.46/46.74 | 39.46/46.74 | 39.46/46.74 | 80.47/91.93 | 106.26/120.37 | 111.33/124.78 | 161.38/178.13 |
| Room Temperature Cooling °F | 60~90 | 60~90 | 60~90 | 60~90 | 60~90 | 60~90 | 60~90 | 60~90 |
| Room Temperature Heating °F | 32~86 | 32~86 | 32~86 | 32~86 | 32~86 | 32~86 | 32~86 | 32~86 |
| Liquid Side/Gas Side inch | 1/4"/1/2" | 1/4"/3/8" | 1/4"/3/8" | 1/4"/3/8" | 3/8"/5/8" | 3/8"/3/4" | 3/8"/3/4" | 3/8"/3/4" |
Outdoor Regular
| Specification | CH-R18MES-230VO | CH-R28MES-230VO | CH-R36MES-230VO | CH-R48MES-230VO | CH-R60MES-230VO |
|---|---|---|---|---|---|
| Power Supply (V, Ph, Hz) | 208/230, 1, 60 | 208/230, 1, 60 | 208/230, 1, 60 | 208/230, 1, 60 | 208/230, 1, 60 |
| Voltage Range (V) | 187-253 | 187-253 | 187-253 | 187-253 | 187-253 |
| Cooling Rated Capacity (range) (Btu/h) | 5,400~21,600 | 7,200~32,000 | 9,000~42,000 | 12,000~55,000 | 19,000~62,000 |
| Cooling Rated Current (A) | 6 | 9.2 | 13.5 | 16.6 | 26.2 |
| EER2 | 14 | 13 | 12 | 12.5 | 10 |
| SEER2 | 25.1 | 25 | 24 | 24 | 22 |
| Heating Rated Capacity (range) (Btu/h) | 5,700~21,600 | 8,400~29,000 | 10,000~42,500 | 13,000~53,000 | 20,000~60,000 |
| Heating Rated Current (A) | 6.8 | 9.2 | 14 | 16.3 | 21 |
| Heating at 47°F COP (W/W) | 3.8 | 3.8 | 3.5 | 3.8 | 3.7 |
| HSPF4 | 9.8 | 9.5 | 9.5 | 10.3 | 9.5 |
| HSPF5 | 7.8 | 7 | 7 | 8 | 7.4 |
| Heating at 5°F Rated Capacity (Btu/h) | 13,500 | 19,000 | 26,000 | 36,000 | 39,000 |
| Minimum Circuit Ampacity (Outdoor unit) (A) | 16 | 23 | 30.5 | 40 | 40 |
| Max. Fuse (Outdoor unit) (A) | 20 | 25 | 35 | 45 | 45 |
| Outdoor Air Flow (Max) (CFM) | 1,765.8 | 2,130.7 | 2,148.4 | 4,502.8 | 4,502.8 |
| Outdoor Noise Level (Sound Pressure) (dB(A)) | 59.5 | 61 | 64.5 | 63 | 65 |
| Dimension (W×D×H) (inch) | 35.04x13.46x26.50 | 37.24x16.14x31.89 | 37.24x16.14x31.89 | 37.48x16.34x52.48 | 37.48x16.34x52.48 |
| Packing (W×D×H) (inch) | 40.55x17.24x29.53 | 42.91x19.68x34.84 | 42.91x19.68x34.84 | 43.11x19.49x58.27 | 43.11x19.49x58.27 |
| Net/Gross Weight (lbs) | 100.53/109.35 | 138.89/149.69 | 168.87/180.12 | 222.00/254.19 | 237.88/270.28 |
| Refrigerant Type/Charged (oz) | R454B/61.73 | R454B/84.66 | R454B/120.63 | R454B/148.15 | R454B/151.68 |
| Refrigerant Precharge (ft) | 75 | 100 | 125 | 150 | 150 |
| Additional Charge for Each (0.16 for 1/4 in liquid pipe / *0.32 for 3/8 in liquid pipe) (oz/ft) | 0.16 / 0.32 | 0.16 / 0.32 | 0.16 / 0.32 | 0.16 / 0.32 | 0.16 / 0.32 |
| Design Pressure (PSIG) | 550/340 | 550/340 | 550/340 | 550/340 | 550/340 |
| Refrigerant Piping Liquid Side (inch) | 3 x 1/4" | 4 x 1/4" | 5 x 1/4" | 6 x 1/4" | 6 x 1/4" |
| Refrigerant Piping Gas Side (inch) | 3 x 3/8" | 3 x 3/8" + 1 x 1/2" | 4 x 3/8" + 1 x 1/2" | 4 x 3/8" + 2 x 1/2" | 4 x 3/8" + 2 x 1/2" |
| Max. Pipe Length (ft) | 196.8 | 262.4 | 262.4 | 262.4 | 262.4 |
| Max. Length for One Indoor Unit (ft) | 98.4 | 114.8 | 114.8 | 114.8 | 114.8 |
| Max. Height Difference in Level (ft) | 49.2 | 49.2 | 49.2 | 49.2 | 49.2 |
| Max. Height Difference Between Indoor Units (ft) | 33 | 33 | 33 | 33 | 33 |
| Ambient Temperature Cooling (°F) | -13~122 | -13~122 | -13~122 | -13~122 | -13~122 |
| Ambient Temperature Heating (°F) | -13~75 | -13~75 | -13~75 | -13~75 | -13~75 |
| Certification: AHRI | ✔ | ✔ | ✔ | ✔ | ✔ |
| Certification: Energy Star | ✔ | ✔ | ✔ | ✔ | ✔ |
| Certification: NEEP | ✔ | ✔ | ✔ | ✔ | ✔ |
| Certification: ETL | ✔ | ✔ | ✔ | ✔ | ✔ |
Outdoor Hyper
| Specification | CH-RVHP19M-230VO | CH-RVHP28M-230VO | CH-RVHP36M-230VO | CH-RVHP48M-230VO | CH-RVHP55M-230VO |
|---|---|---|---|---|---|
| Power Supply (V/Ph/Hz) | 208/230, 1, 60 | 208/230, 1, 60 | 208/230, 1, 60 | 208/230, 1, 60 | 208/230, 1, 60 |
| Operating Range (V) | 187-253 | 187-253 | 187-253 | 187-253 | 187-253 |
| Cooling Capacity (BTU/h) | 5,400~28,000 | 7,200~37,000 | 9,000~43,000 | 12,000~57,000 | 19,000~59,000 |
| SEER2 | 5.6 | 9.5 | 12 | 17.3 | 18.5 |
| EER | 15 | 12.5 | 13 | 12 | 12 |
| IEER | 25 | 23 | 23 | 23 | 22.2 |
| Heating Capacity (BTU/h) | 5,700~27,000 | 8,400~36,000 | 10,000~44,000 | 13,000~57,000 | 20,000~59,000 |
| HSPF2 | 6.5 | 9.1 | 11.5 | 17.3 | 20.1 |
| COP | 4 | 3.8 | 4 | 3.7 | 3.5 |
| SCOP | 10.4 | 10.5 | 10.7 | 11 | 10.5 |
| Power Input (W) | 8.5 | 8.5 | 8.5 | 9 | 8.5 |
| Air Flow (CFM) | 19,000 | 27,000 | 36,000 | 47,000 | 47,000 |
| Sound Level Indoor (dBA) | 17.5 | 30 | 37 | 37 | 39.5 |
| Sound Level Outdoor (dBA) | 20 | 35 | 40 | 40 | 40 |
| Weight Indoor (lbs) | 2,130.7 | 2,148.4 | 3,037.2 | 4,502.8 | 4,502.8 |
| Weight Outdoor (lbs) | 61.5 | 61 | 65 | 65 | 65 |
| Dimensions Indoor (in) | 37.24x16.14x31.89 | 37.24x16.14x31.89 | 38.58x16.34x38.39 | 37.48x16.34x52.48 | 37.48x16.34x52.48 |
| Dimensions Outdoor (in) | 42.91x19.68x34.84 | 42.91x19.68x34.84 | 45.08x19.68x42.52 | 43.11x19.49x58.27 | 43.11x19.49x58.27 |
| Shipping Weight Indoor/Outdoor (lbs) | 137.35/148.15 | 168.43/179.67 | 211.86/244.71 | 246.47/276.68 | 246.47/276.68 |
| Refrigerant Type/Amount (lbs) | R454B/78.31 | R454B/120.63 | R454B/134.04 | R454B/151.68 | R454B/151.68 |
| Fuse Size (A) | 75 | 100 | 125 | 150 | 150 |
| Wire Size (AWG) | 0.16 / 0.32 | 0.16 / 0.32 | 0.16 / 0.32 | 0.16 / 0.32 | 0.16 / 0.32 |
| Control Voltage (V) | 550/340 | 550/340 | 550/340 | 550/340 | 550/340 |
| Liquid Line | 3 x 1/4" | 4 x 1/4" | 5 x 1/4" | 6 x 1/4" | 6 x 1/4" |
| Suction Line | 3 x 3/8" | 3 x 3/8" + 1 x 1/2" | 3 x 3/8" + 2 x 1/2" | 4 x 3/8" + 2 x 1/2" | 4 x 3/8" + 2 x 1/2" |
| Max Line Length (ft) | 196.8 | 262.4 | 262.4 | 262.4 | 262.4 |
| Max Elevation Diff (ft) | 98.4 | 114.8 | 114.8 | 114.8 | 114.8 |
| Max Head Pressure (ft) | 49.2 | 49.2 | 49.2 | 49.2 | 49.2 |
| Max Suction Pressure (ft) | 33 | 33 | 33 | 33 | 33 |
| Operating Range Cooling (°F) | -22~122 | -22~122 | -22~122 | -22~122 | -22~122 |
| Operating Range Heating (°F) | -22~75 | -22~75 | -22~75 | -22~75 | -22~75 |
| Feature 1 | ✓ | ✓ | ✓ | ✓ | ✓ |
| Feature 2 | ✓ | ✓ | ✓ | ✓ | ✓ |
| Feature 3 | ✓ | ✓ | ✓ | ✓ | ✓ |
| Feature 4 | ✓ | ✓ | ✓ | ✓ | ✓ |
Frequently asked questions.
What size mini split do I need for my room?
For optimal performance, the Cooper & Hunter 18,000 BTU mini split is suitable for spaces up to 850 sq ft. This capacity is ideal for medium to large rooms, offering efficient cooling and heating.
Can I install a mini split myself?
While the Cooper & Hunter mini split can be installed by a DIY enthusiast, it’s recommended to hire a professional for best results. The system requires proper refrigerant handling and electrical connections, especially considering its 230V voltage requirement.
Does the mini split come pre-charged with refrigerant?
Yes, the Cooper & Hunter mini split is pre-charged with R454B refrigerant for up to 25 ft of line set. This feature simplifies installation, allowing you to set it up without needing to add refrigerant.
What warranty does the Cooper & Hunter mini split offer?
The Cooper & Hunter mini split features a comprehensive warranty: a 5-year parts warranty and a 7-year compressor warranty, provided that registration is completed within 30 days of purchase. This offers peace of mind for your investment.
What is the SEER rating of the Cooper & Hunter mini split?
The Cooper & Hunter mini split boasts an impressive SEER rating of 21.4, which indicates its high efficiency in cooling. A higher SEER rating can lead to significant energy savings over time.
What voltage does the Cooper & Hunter mini split require?
The Cooper & Hunter 18,000 BTU mini split operates on a 230V power supply. Ensure your electrical system can accommodate this voltage for optimal performance.
Manufacturer Technical Support
Reach your brand's tech support team directly
You may also like
- R410ASEER2 26.4Heats & Cools
7-Yr Warranty
Cooper & HunterCooper & Hunter Midnight Black 6,000 BTU Indoor Wall Mount, 230V, R410A - Ductless Mini Split Air Conditioner Heat Pump - R32Heats & Cools
7-Yr Warranty
BravoBravo Milano 9,000 BTU Indoor Wall Mount, 230V, R32 - Ductless Mini Split Air Conditioner Heat Pump - R32Heats & Cools
7-Yr Warranty
BravoBravo Milano 12,000 BTU Indoor Wall Mount, 230V, R32 - Ductless Mini Split Air Conditioner Heat Pump - R410ASEER2 22.0Heats & Cools
5-Yr Warranty
OLMOOLMO Sierra 18,000 BTU Indoor Wall Mount, 230V, R410A - Ductless Mini Split Air Conditioner Heat Pump
The Cooper & Hunter 18,000 BTU slim duct (concealed) is a slim duct (concealed) indoor unit for Cooper & Hunter ductless mini split systems, running on R454B refrigerant. It mounts in a single room or zone and is controlled independently with its included remote — pair it with a compatible outdoor condenser to complete your system.
Key Features
- Slim Duct (concealed) indoor unit for Cooper & Hunter multi-zone / single-zone systems
- 18,000 BTU nominal capacity
- Individually controlled with included remote — set its own temperature per room
- R454B refrigerant
- Inverter heat pump — cools and heats when paired with a compatible condenser
Works With
Connects to a compatible Cooper & Hunter outdoor condenser (multi-zone or single-zone), sold separately. Choose a copper line-set kit length at checkout, or supply your own.