SplitAtlas

Cooper & Hunter / Ceiling Cassette

Cooper Hunter Ceiling Cassette 23k Hyper R-454B 208/230V Mini-Split

Certified capacity
23,400 BTU/h[2]
SEER2
20.7 SEER2[2]
Heating floor
-22 F[1]
Voltage
230 V[1]
Install path
Professional install

The hyper CH-RH24MCT cassette certifies at 23,400 BTU cooling and 25,000 heating, with 20.7 SEER2 and 11.6 HSPF2, rated to -22F. It is the largest single-zone cassette in the range before the light-commercial units take over.

The standard version of this same head is the more efficient cooler (22 SEER2 and a full 24,000 BTU) but only reaches -13F and 10.5 HSPF2. As with the 18k pair, choose on climate: this one for winter, that one for summer.

1 zoneProfessional installCurrent

Refrigerant generation

R-454B - current-generation refrigerant

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Error Codes
Cooper & Hunter 23000 BTU four-way ceiling cassette for an R-454B mini-split system.

Image: Cooper & Hunter official CH-RH24MCT product page

Data completeness: 92%
Last sourced
Aug 2, 2026

SplitAtlas score

8.5 / 10

Methodology
Cooling efficiencyBelow average

(20.7 SEER2) among 24k systems

Heating efficiencyTop quartile

(11.6 HSPF2) among 24k systems

Cold-weather performanceTop quartile

(5F certified capacity: 95.2% of the 47F rating; -22 F heating floor) among 24k systems

WarrantyBelow average

(5 yr parts / 7 yr compressor) across the catalogue

Feature setAbove average

(6 verified features) across the catalogue

Documentation & partsBelow average

(6 manuals; spec sheet) across the catalogue

Not evaluated

  • Installation accessibility — not applicable (professional install)N/A

    professional install - DIY-accessibility not applicable

  • Price-to-value — not evaluatedN/A

    This is a professionally installed, quote-only system, so we can't score its price. Get an installed quote to compare real cost.

    Get a quote

Key ratings

Rated cooling

23,400BTU/h[2]

Rated heating

25,000BTU/h[2]

Buyer review snapshot

Install difficulty

Professional flared-line install
  • Electrical: 230V; MCA 24.9 A; breaker/fuse 25 A.
  • Line set: Flared line connections; precharged 25 ft; max 164 ft.

Alternatives

Availability and price context

This system needs a professional install, so its real price is an installed quote that depends on your home. We don't link to a listing for this exact model; get installation quotes to price it.

Source date

Model data sourced
Aug 2, 2026
Page reviewed
Aug 2, 2026
Source-backed records
3
Newest source retrieved
Aug 2, 2026

Warranty tiers

Registered
5 yr parts / 7 yr compressor - licensed-technician installation and registration terms

The score uses Registered. Additional published terms are shown for reference and not counted in the score.

Review methodology

Model context

Structured ratings
Certification: ENERGY STAR certified and AHRI cold-climate designated. Refrigerant: current low-GWP R-454B. Minimum heating ambient: -22 F.

Strengths

  • 25,000 BTU of heating with a -22F rating and 11.6 HSPF2.
  • Covers a large room from a single ceiling position.

Weaknesses

  • 20.7 SEER2 trails the standard version's 22 for cooling.
  • 23,400 BTU cooling, not the 24,000 the head size suggests.
  • Heavy head with real ceiling structure and cavity requirements.

Climate suitability

Minimum heating ambient
-22 F[1]
Certified heating at 5F
23,800 BTU/h[2]
Rated heating at 17F
20,400 BTU/h[2]
Rated heating at 47F
25,000 BTU/h[2]

Specifications

Show
Manufacturer
Cooper & Hunter
Brand
Cooper & Hunter
Product line
Ceiling Cassette
Model number
CH-RH24MCT indoor / CH-RHP24-230VO outdoor
Indoor unit model
CH-RH24MCT
Outdoor unit model
CH-RHP24-230VO
Number of zones
1
Max indoor units
not published
Rated cooling capacity
23,400 BTU/h[2]
Rated heating capacity
25,000 BTU/h[2]
Voltage
230 V[1]
MCA
24.9 A[1]
Maximum fuse or breaker size
25 A[1]
Breaker needed
not published
SEER2
20.7 SEER2[2]
EER2
12 EER2[2]
HSPF2 (Region 4)
11.6 HSPF2[2]
HSPF2 (Region 5)
not published
COP
not published
COP at 47F
not published
COP at 5F
2.23 COP[2]
Minimum outdoor heating temperature
-22 F[1]
Minimum outdoor cooling temperature
-22 F[1]
Maximum outdoor temperature
122 F[1]
Indoor noise range
not published
Outdoor noise rating
61.5 dBA[1]
Indoor weight
not published
Outdoor weight
130.29 lb[1]
Refrigerant
R-454B[2]
Refrigerant charge
not published
Manufacturer coverage
not published
Line-set size
3/8 in liquid / 5/8 in suction
Included line-set length
C&H cassette and slim-duct systems are professional-install equipment; the installer supplies the refrigerant line set within published piping limits.
Maximum line-set length
164 ft[1]
Max line set per indoor
not published
Maximum elevation difference
82 ft[1]
Max height between indoor units
not published
Wi-Fi support
supported[1]
Energy Star status
ENERGY STAR certified[2]
AHRI certification number
215864203[2]
Warranty
Registered: 5 yr parts / 7 yr compressor (licensed-technician installation and registration terms). Score uses Registered.. 7-year compressor and 5-year parts limited warranty with licensed-technician installation and registration terms.
Install path
Professional install
Retail price
Installed quote only
Available retailers
not published
Manual links
AHRI Active public directory row 215864203, Installation manual R454B Ceiling Cassette, Cooper & Hunter Multi R installation manual, Cooper & Hunter Ceiling Cassette official product pages for CH-RH24MCT, Owner's manual R454B Ceiling Cassette, Cooper & Hunter support-material submittal for CH-RHP24-230VO + CH-RH24MCT
Specification sheet
Cooper & Hunter support-material submittal for CH-RHP24-230VO + CH-RH24MCT
Last sourced date
Aug 2, 2026

Electrical requirements

Show
Voltage
230 V[1]
Voltage range
208/230V[1]
Phase
1[1]
Frequency
60 Hz[1]
MCA
24.9 A[1]
Breaker needed
not published
Maximum breaker size
25 A[1]
Maximum fuse size
25 A[1]
Maximum cooling current
not published
Maximum heating current
not published
Manufacturer wire notes
Field wiring per C&H support-material submittal and local electrical code.[1]

Installation considerations

Show
Liquid line
3/8 in[1]
Suction line
5/8 in[1]
Line connection type
Flared line connections[1]
Precharged length
25 ft[1]
Included line-set length
C&H cassette and slim-duct systems are professional-install equipment; the installer supplies the refrigerant line set within published piping limits.
Maximum line-set length
164 ft[1]
Max line set per indoor
not published
Max height between indoor units
not published
Indoor dimensions
not published
Outdoor dimensions
37.24 x 16.14 x 31.89 in[1]
Indoor weight
not published
Outdoor weight
130.29 lb[1]
Drain size
not published

Related systems and guides

Frequently asked questions

Can I install the Cooper & Hunter 4-Way Ceiling Cassette 23,000 BTU R-454B 208/230V (CH-RH24MCT / CH-RHP24-230VO) myself, or do I need a pro?
Cooper & Hunter 4-Way Ceiling Cassette 23,000 BTU R-454B 208/230V (CH-RH24MCT / CH-RHP24-230VO) is built for professional installation: the line set must be flared, evacuated, and charged, which requires EPA-certified refrigerant handling. Installing it outside the manufacturer's requirements can void the warranty, so budget for a qualified HVAC installer.
Will the Cooper & Hunter 4-Way Ceiling Cassette 23,000 BTU R-454B 208/230V (CH-RH24MCT / CH-RHP24-230VO) keep heating in a cold winter?
The AHRI/ENERGY STAR certification lists 23,800 BTU/h of heating capacity at 5F. Rated heating operation extends down to -22 F. Certified heating efficiency is 11.6 HSPF2. Match those numbers against your climate's design temperature - in cold regions, output at 5F matters far more than the nameplate capacity measured at 47F.
What electrical circuit does the Cooper & Hunter 4-Way Ceiling Cassette 23,000 BTU R-454B 208/230V (CH-RH24MCT / CH-RHP24-230VO) need?
Published electrical requirements: 230 V voltage, 24.9 A minimum circuit ampacity, and 25 A maximum breaker or fuse sizing. Confirm the final circuit against the unit nameplate and local code with a licensed electrician.
How far can the outdoor unit be from the indoor head?
The published maximum line-set length is 164 ft. The outdoor unit's factory charge covers up to 25 ft of line; longer runs need added refrigerant. Measure the planned routing before ordering.
What warranty does the Cooper & Hunter 4-Way Ceiling Cassette 23,000 BTU R-454B 208/230V (CH-RH24MCT / CH-RHP24-230VO) carry?
The manufacturer publishes these warranty tiers: Registered: 5 yr parts / 7 yr compressor (licensed-technician installation and registration terms). Score uses Registered.. Registration requirements and proof of qualified installation commonly affect coverage, so read the warranty terms before install day.

Data sources

Show
  1. Cooper & Hunter: Cooper & Hunter support-material submittal for CH-RES24-230VO + CH-RH24MCTSourced - manufacturer technical document

    Covers Frequency, electrical_spec.guaranteed_voltage_range, Maximum breaker size, Maximum fuse size, Minimum circuit ampacity, Phase and more

  2. Air-Conditioning, Heating, and Refrigeration Institute: AHRI Active Cooper & Hunter form-factor row 215864231Sourced - AHRI directory

    Covers AHRI certification number, performance_spec.cold_climate_designation, Rated cooling capacity, COP at 5F, EER2, Energy Star status and more

  3. Cooper & Hunter: Cooper & Hunter Multi R installation manual limited warranty sectionSourced - manufacturer technical document

    Covers Legacy compressor warranty value, Legacy warranty value, Registered compressor warranty, Registered warranty conditions, Registered parts warranty, Warranty notes

Last updated

Aug 2, 2026