Heats and coolsR454B
Regular Outdoor, Single-zone outdoor unit
Regular Outdoor 18K
A person checks this pairing before it ships.
Rebates for this unitUtility and state programs change by ZIP code.
- Ships to all 50 states. If anything arrives damaged, we handle the claim.
- New units from an authorized Cooper & Hunter dealer, with the full factory warranty.
- All sales are final. Not sure about the size? Call (417) 812-0015 before you order.
Rated performance
From the spec sheet on file for model CH-RES18-230VO. Every other figure is in the full spec sheet below.
- Capacity
18,000BTU/h
Cooling runs 3,500 to 18,900 BTU/h
- Efficiency
23.5SEER2
Bar on the catalog's 14 to 28 range
- Sound
59dB(A)
Outdoor unit, at full speed
- Heating
−13°F
Lowest outdoor temperature, manufacturer rating
- Line set
98.4ft max
1/4 in and 1/2 in lines, 65.6 ft max rise
- HSPF2
10.8
Heating efficiency, region IV
- Cooling
- −13 to 122 °F
- Heating
- −13 to 75 °F
Why this outdoor unit
From the feature list on file for model CH-RES18-230VO.
- Can be installed up to 2' from the ceiling
- Invert technology
- Refrigerant Sensor
- Humidity Sensor
- Auto-Swing for vertical and horizontal louvers
- Easy to remove blower wheel, magnetic filter on top
- Larger air inlet/outlet air flow
- Compatible with regular (-13°F) or Hyper (-22°F)
Specifications
The full spec sheet
Every value on file for model CH-RES18-230VO, with units.
Capacity
5 values| Nominal capacity | 18,000 | BTU/h |
|---|---|---|
| Rated cooling capacity | 17,000 | BTU/h |
| Cooling capacity range | 7,000 to 19,000 | BTU/h |
| Rated heating capacity (47°F) | 20,000 | BTU/h |
| Heating capacity range (47°F) | 5,500 to 22,000 | BTU/h |
From the Cooper & Hunter spec sheet.
Efficiency
5 values| SEER2 | 20 | |
|---|---|---|
| EER2 | 12.5 | |
| HSPF2 (Region IV) | 10.5 | |
| HSPF2 (Region V, cold climate) | 8.2 | |
| COP at 47°F | 3.47 | W/W |
From the Cooper & Hunter spec sheet.
Electrical
9 values| Voltage | 208/230 | V |
|---|---|---|
| Phase | 1 | ph |
| Frequency | 60 | Hz |
| Operating voltage range | 187 to 253 | V |
| Minimum circuit ampacity (MCA) | 18 | A |
| Maximum fuse / breaker size | 20 | A |
| Rated cooling current | 6.7 | A |
| Indoor/outdoor communication wire gauge | 14 | AWG |
| Indoor/outdoor communication wire conductors | 4 |
From the Cooper & Hunter spec sheet, with 3 values from the product listing.
Refrigerant and piping
8 values| Refrigerant | R-454B | |
|---|---|---|
| Pre-charged for line length up to | 25 | ft |
| Additional charge per extra foot, 1/4 in. liquid line | 0.16 | oz/ft |
| Liquid line size | 1/4 | in |
| Suction (gas) line size | 1/2 | in |
| Maximum line length | 98.4 | ft |
| Maximum height difference, indoor to outdoor | 65.6 | ft |
| Compressor type | Rotary |
From the Cooper & Hunter spec sheet, with 1 value from the product listing.
Dimensions and weight
8 values| Width | 35.04 | in |
|---|---|---|
| Depth | 13.46 | in |
| Height | 26.5 | in |
| Net weight | 92.6 | lb |
| Shipping width | 39.17 | in |
| Shipping depth | 15.67 | in |
| Shipping height | 29.13 | in |
| Shipping weight | 100.3 | lb |
From the Cooper & Hunter spec sheet.
Sound and airflow
1 value| Outdoor sound level | 59 | dB(A) |
|---|
From the Cooper & Hunter spec sheet.
Operating range
2 values| Outdoor operating range, cooling | -13 to 122 | °F |
|---|---|---|
| Outdoor operating range, heating | -13 to 75 | °F |
From the Cooper & Hunter spec sheet.
Controls and features
1 value| Zones | Single zone |
|---|
From the Cooper & Hunter spec sheet.
Approved pairings
Indoor heads approved for this unit.
This outdoor unit runs one indoor head. These 11 heads are approved for it by Cooper & Hunter.
| Unit | Size |
|---|---|
 16K Mini Floor ConsoleCH-RSH16MMC | 16K BTU |
 Astoria Pro 18K Wall MountCH-PRO18MASTWM-230VI | 18K BTU |
 Olivia 18K Wall MountCH-R18MOLVWM-230VI | 18K BTU |
 Olivia 18K Wall MountCH-RB18MOLVWM-230VI | 18K BTU |
| Astoria 18K Wall MountCH-RH18MASTWM-230VI | 18K BTU |
 18K Ceiling CassetteCH-RH18MCT | 18K BTU |
 18K Multi-Position Air HandlerCH-RS18MAHU | 18K BTU |
 18K Slim DuctCH-RS18MDT-MS | 18K BTU |
| 18K Ceiling CassetteCH-RSH18MCT | 18K BTU |
 18K One-Way Ceiling CassetteCH-RSH18MCT1W | 18K BTU |
 18K Universal Floor/CeilingCH-RSH18MFC | 18K BTU |
Rebates
Heat pump rebates by ZIP code
Utility and state programs change by ZIP code and can be large. Enter yours to see the programs on file for this model.
See the biggest programs by stateAbout this outdoor unit
What it is and what it needs.
The Cooper & Hunter Regular Outdoor 18K Outdoor Unit is an 18K BTU single-zone outdoor unit: it runs one matching indoor head. 11 indoor units are approved for it by the manufacturer and listed on this page.
It runs on 208–230 V and uses R454B refrigerant. It is rated SEER2 23.5.
Documents
- Spec sheetCH-RES18-230VO with CH-PRO18MASTWM-230VI(PDF, opens in a new tab)
- Spec sheetCH-RES18-230VO with CH-RH18MASTWM-230VI(PDF, opens in a new tab)
- Spec sheetCH-RES18-230VO with CH-RS18MDT-MS(PDF, opens in a new tab)
- Spec sheetCH-RES18-230VO with CH-RSH18MFC(PDF, opens in a new tab)
- Spec sheetCH-RES18-230VO with CH-RSH18MCT(PDF, opens in a new tab)
- Spec sheetCH-RES18-230VO with CH-RH18MCT(PDF, opens in a new tab)
- Spec sheetCH-RES18-230VO with CH-RB18MOLVWM-230VI(PDF, opens in a new tab)
- Spec sheetCH-RES18-230VO with CH-RS18MDT-MS(PDF, opens in a new tab)
- Installation manualR454B Outdoor units(PDF, opens in a new tab)
- Product leafletSlimDuct R454B(PDF, opens in a new tab)
- Document(PDF, opens in a new tab)
- Document(PDF, opens in a new tab)
Call before you order.Sizing, pairings, line set lengths and rebates.
Monday to Friday, 8 AM to 5 PM Central
We are in Mountain Grove, Missouri.
Send a messageQuestions
Before you order
Anything else, call (417) 812-0015. Monday to Friday, 8 AM to 5 PM Central.
Is this the whole system?
This is the outdoor unit (condenser). Pair it with one of the approved indoor units listed above. Line sets and brackets are quoted with your order; call and we add them.
Can I install it myself?
Mounting, wiring and running the line set are within reach of a capable DIYer. The refrigerant connection and vacuum should be done by a licensed HVAC technician in most states, and manufacturer warranties usually require it. We can point you to an installer in your area.
What if I am not sure about the size?
Room size, ceiling height, insulation, windows and sun exposure all change the answer. Call (417) 812-0015 with the room details and we will confirm the BTU rating before you order.
Can I return it?
No. All sales are final, so size it right first: the builder and the sizing guide are free, and a person confirms the pairing on every order. If anything arrives damaged, we handle the claim for you, and defects are covered by the manufacturer warranty.
What refrigerant does it use?
R454B. Match it to any existing equipment or line set you plan to reuse; refrigerants are not interchangeable.
Reviews
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Not sure about the size? Check it in the builder.
The builder sizes each room and shows only approved Cooper & Hunter systems. All sales are final, so size it right first.
Monday to Friday, 8 AM to 5 PM Central