Heats and coolsR454B
Multi-Position Air Handler
24K Multi-Position Air Handler
A person checks this pairing before it ships.
- 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-RS24MAHU. Every other figure is in the full spec sheet below.
- Capacity
24,000BTU/h
Cooling runs 6,700 to 29,600 BTU/h
- Efficiency
18.7SEER2
Bar on the catalog's 14 to 28 range
- Sound
28.5dB(A)
Indoor, lowest fan speed; 43.5 on high
- Heating
−13°F
Lowest outdoor temperature on this model's spec sheet
- Line set
164ft max
3/8 in and 5/8 in lines, 82 ft max rise
- Airflow
824CFM
Indoor, top fan speed
- Cooling
- −13 to 122 °F
- Heating
- −13 to 75 °F
Will it fit? Front and side, to scale
Drawn from the spec sheet’s indoor dimensions, W × D × H.
- Width
- 17.52 in
- Height
- 45 in
- Depth
- 21.02 in
Why this head
From the feature list on file for model CH-RS24MAHU.
- Auto restart
- Quiet operation
- Multiple fan speeds
- Auxiliary heater
- Adjustable static pressure
- Multi position
- Fast cool/heat function
- Aluminium coil
- WIFI ready
- Refrigerant leak detect
Specifications
The full spec sheet
Every value on file for model CH-RS24MAHU, with units.
Capacity
5 values| Nominal capacity | 24,000 | BTU/h |
|---|---|---|
| Rated cooling capacity | 24,000 | BTU/h |
| Cooling capacity range | 6,700 to 29,600 | BTU/h |
| Rated heating capacity (47°F) | 25,000 | BTU/h |
| Heating capacity range (47°F) | 5,800 to 33,800 | BTU/h |
From the Cooper & Hunter spec sheet, with 4 values from the product listing.
Efficiency
5 values| SEER2 | 18.7 | |
|---|---|---|
| EER2 | 12 | |
| HSPF2 (Region IV) | 9 | |
| HSPF2 (Region V, cold climate) | 7.3 | |
| COP at 47°F | 3.53 | W/W |
From the Cooper & Hunter spec sheet, with 3 values from the product listing.
Electrical
9 values| Voltage | 208/230 | V |
|---|---|---|
| Phase | 1 | ph |
| Frequency | 60 | Hz |
| Operating voltage range | 187 to 253 | V |
| Minimum circuit ampacity (MCA) | 4 | A |
| Maximum fuse / breaker size | 15 | A |
| Rated cooling current | 9.2 | 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
6 values| Refrigerant | R-454B | |
|---|---|---|
| Liquid line size | 3/8 | in |
| Suction (gas) line size | 5/8 | in |
| Condensate drain size | 3/4 | in |
| Maximum line length | 164 | ft |
| Maximum height difference, indoor to outdoor | 82 | ft |
From the Cooper & Hunter spec sheet, with 2 values from the product listing.
Dimensions and weight
9 values| Width | 17.52 | in |
|---|---|---|
| Depth | 21.02 | in |
| Height | 45 | in |
| Net weight | 104.3 | lb |
| Shipping width | 20.87 | in |
| Shipping depth | 26.57 | in |
| Shipping height | 48.62 | in |
| Shipping weight | 125.9 | lb |
| Filter | field supply, the unit without filter 16x20 |
From the Cooper & Hunter spec sheet.
Sound and airflow
5 values| Indoor sound level (quietest setting) | 25.5 | dB(A) |
|---|---|---|
| Indoor sound level (highest setting) | 43.5 | dB(A) |
| Indoor airflow (highest setting) | 824 | CFM |
| Indoor airflow (lowest setting) | 630 | CFM |
| External static pressure | 0 to 0.8 | in. WG |
From the Cooper & Hunter spec sheet.
Operating range
4 values| Outdoor operating range, cooling | -13 to 122 | °F |
|---|---|---|
| Outdoor operating range, heating | -13 to 75 | °F |
| Indoor temperature setting, cooling | 60 to 90 | °F |
| Indoor temperature setting, heating | 32 to 86 | °F |
From the Cooper & Hunter spec sheet, with 2 values from the product listing.
Controls and features
2 values| Zones | Single zone |
|---|---|
| Controller | wire controller + remote controller available |
From the Cooper & Hunter spec sheet.
Approved pairings
Outdoor units approved for this head.
This head runs only with a matching outdoor unit. 2 are approved for it by Cooper & Hunter.
| Unit | Size |
|---|---|
 Regular Outdoor 24KCH-RES24-230VO | 24K BTU |
 Hyper Outdoor 24KCH-RHP24-230VO | 24K BTU |
About this unit
What it is and what it needs.
The Cooper & Hunter 24K Multi-Position Air Handler is a 24K BTU multi-position air handler indoor unit. It needs a matching outdoor unit: 2 single-zone outdoor units are approved for it and listed on this page.
It runs on 208–230 V and uses R454B refrigerant. The matched system is rated SEER2 18.7.
Documents
- Spec sheetCH-RHP24-230VO with CH-RS24MAHU(PDF, opens in a new tab)
- Spec sheetCH-RES24-230VO with CH-RS24MAHU(PDF, opens in a new tab)
- Spec sheetCH-RHP24-230VO with CH-RS24MAHU(PDF, opens in a new tab)
- Spec sheetCH-RES24-230VO with CH-RS24MAHU(PDF, opens in a new tab)
- Installation manualRS AHU(PDF, opens in a new tab)
- Installation manualNR Heater(PDF, opens in a new tab)
- Owner's manualRS AHU(PDF, opens in a new tab)
- Controller manual120N wire controller(PDF, opens in a new tab)
- Product leafletAHU R454B 2025(PDF, opens in a new tab)
- Document(PDF, opens in a new tab)
- DocumentAHU R454B 2025(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.
Does this work on its own?
No. An indoor head needs a matching outdoor unit from the approved list above. If you are replacing one head on an existing multi-zone system, match the series and refrigerant of the outdoor unit you already have.
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