DHX24CSB21S
DHX24CSB21S is in the certified data.
Its certified full-speed heating output at 5°F is 19,800 Btu/h5.80 kW, 83% of its 47°F rating (tests at different compressor speeds) across its certified pairings.
Champion, Coleman + 2 more · mini-split heat pump
All 48 certified Champion models · All 66 certified Coleman models · All 35 certified Guardian models · All 64 certified Luxaire models
DHX24CSB21S is in the certified data as of Oct 18, 2026. DHX24CSB21S changed its certified heat output at 17°F on AHRI certificate 202208608 from 14,300 Btu/h to 20,000 Btu/h in the certified data between March 2025 and May 2025.
- 24,000 Btu (2-ton)
- Mini-split
- Variable speed
- US and Canada
Certified heating and cooling
Heating at 47°F
24,0007.03NR
No 47°F rating for this pairing.
20,0005.86NR at 17°F
19,8005.80NR at 5°F
Btu/hkW, certified
1.75NR COP at 5°F
Heating and cooling by outdoor temperature
This pairing delivers 24,000 Btu/h7.03 kW of heat at 47°F, 20,000 Btu/h5.86 kW at 17°F, and 19,800 Btu/h5.80 kW at 5°F, 83% of its 47°F rating. It delivers 22,000 Btu/h6.45 kW of cooling at 95°F. At 5°F that is 800 Btu/h0.23 kW above the example heating load of 19,000 Btu/h5.57 kW; at 95°F it is 12,500 Btu/h3.66 kW above the example cooling load of 9,500 Btu/h2.78 kW.
Each bar is a separate certified test, drawn at its outdoor temperature, starting at zero. The 47°F figure is at normal speed; the 17 and 5°F figures are at full speed. The short dark line on each bar is the median of 2-ton mini-split models, one value per model. The shaded 17 to 45°F band is the frosting range: the outdoor coil can frost, and the unit pauses to defrost.
The dashed lines are example loads for a typical area of about 800 sq ft where winters reach 5°F: heating runs from 19,000 Btu/h5.57 kW at 5°F to 0 at 65°F, and cooling runs from 0 at 65°F to 9,500 Btu/h2.78 kW at 95°F, at 1,000 sq ft per ton. A house in a hot climate or with large west-facing windows can need twice as much cooling. They are examples, not your building.
AHRI certificate 8578582 · listed by COLEMAN BY JOHNSON CONTROLS · certified Feb 17, 2025 · 4 pairings on 4 certificates share these values
Rebates where you live
Meets the recorded equipment thresholds of 42 programs in 23 states, provinces, or territories:Alabama (1), Arizona (1), California (2), Colorado (1), Delaware (2), Idaho (2), Kentucky (1), Maryland (3), Michigan (2), Minnesota (1), Mississippi (2), New Jersey (6), New York (4), Oregon (2), Pennsylvania (4), Tennessee (1), Texas (2), Utah (1), Vermont (3), Washington (1), Wisconsin (1), British Columbia (3), Newfoundland and Labrador (1).
All 42 programs by state and province
Alabama
Arizona
California
Colorado
Delaware
- Delaware Electric Cooperative High Efficiency Heat Pump Grant
- Energize Delaware Home Performance · Delmarva Power · Delaware Electric Cooperative · Delaware Municipal Electric Corporation · City of Dover · Chesapeake Utilities
Idaho
Kentucky
Maryland
- BGE Smart Energy Savers Heating and Cooling
- Delmarva Power Maryland HVAC Efficiency Program
- Pepco Maryland HVAC Efficiency Program
Michigan
Minnesota
Mississippi
- EnergyRight Home Energy Rebates · TVA EnergyRight · EPB
- Entergy Mississippi Residential Heating and Cooling
New Jersey
- Atlantic City Electric Building Decarbonization
- Atlantic City Electric HVAC Efficiency Program
- JCP&L Residential HVAC Rebates
- PSE&G HVAC Instant Rebates
- Rockland Electric Clean Heat
- SAVEGREEN Hybrid Heat · New Jersey Natural Gas
New York
- EmPower+
- NYS Clean Heat: Central Hudson, NYSEG, RG&E, and O&R · Orange & Rockland
- NYS Clean Heat: Con Edison
- NYS Clean Heat: National Grid
Oregon
- Energy Trust of Oregon Heat Pump Incentives · Portland General Electric (PGE) · Pacific Power
- Idaho Power Heating and Cooling Efficiency Program
Pennsylvania
- Duquesne Light Instant Discount
- PECO Home Rebates for Heat Pumps
- PPL Electric Utilities Heat Pump Rebates
- Penn Energy Savers
Tennessee
Texas
Utah
Vermont
- Burlington Electric Heat Pump Rebates · Burlington Electric Department
- Efficiency Vermont Heat Pump Discounts
- Green Mountain Power Income-Eligible Heat Pump Rebate
Washington
Wisconsin
British Columbia
- CleanBC Energy Savings Program · BC Hydro · FortisBC · municipal utilities
- Home Renovation Rebate: Heat Pump Replacing Electric Heat · BC Hydro · FortisBC · Grand Forks · Penticton · Summerland · Nelson Hydro
- Home Renovation Rebate: Northern Fuel Switch · BC Hydro · Pacific Northern Gas · FortisBC (gas)
Newfoundland and Labrador
Threshold comparisons use the unit’s median certified figures across its pairings, not the pairing selected above. Meeting these thresholds means the equipment may qualify; it does not guarantee approval. Service-area, installation, and product-list requirements also apply.
A utility program is for that utility's customers.
Choose location
Certified output and power use
| Outdoor temperature | Certified outputBtu/h | One scale | vs class median | COPat 5°F |
|---|---|---|---|---|
| 5°Ffull speed | 19,8005.80 kW | +4% | 1.75 | |
| 17°Ffull speed | 20,0005.86 kW | 0% | NR | |
| 47°Fnormal speed | 24,0007.03 kW | −4% | NR | |
| 95°Fcooling, full load | 22,0006.45 kW | — | NR |
EER2 12.5 in that test. SEER2 20.0 over the modeled cooling season.
Power use at each temperature
- Electrical input in the 5°F full-speed test
- 3.32kW
- Electrical input in the 95°F cooling test
- 1.76kW
- Seasonal average heating COP
- 2.49
These exclude backup resistance heat.
How it compares with other 24,000 Btu heat pumps
2-ton mini-split models
- This pairing at 5°F
- 19,800 Btu/h5.80 kWNR
- This unit at 5°F median across its pairings
- 19,800 Btu/h5.80 kW
- Median of 2-ton mini-split models at 5°F
- 19,000 Btu/h5.57 kW
- Models in this group
- 917
This unit is above 55% of them, at number 416 of 917 by heat at 5°F. The middle half of the group runs 18,000 to 23,000 Btu/h.
Among 24,000 Btu mini-split models, each by its median certified pairing, highest first: 5°F output as a share of its 47°F rating, 385th of 917 (tied); HSPF2, 864th of 927 (tied). Models without that figure are left out.
Similar ratings at 47°F
These mini-split models share the nominal cooling size. Comparisons use each model’s median certified figures across pairings.
- CU-4Z24BBUC: The same 24,000 Btu/h rating at 47°F; 27,000 Btu/h at 5°F (this model: 19,800).
- H24SVH20XQC: The same 24,000 Btu/h rating at 47°F; 13,100 Btu/h at 5°F (this model: 19,800).
- AM3-H24/2DR3B: The same 24,000 Btu/h rating at 47°F; 26,000 Btu/h at 5°F (this model: 19,800).
Closest models by heat at 5°F
- VPC024H5M-3PLennox · 20,000 Btu/h
- XH24MAA2DI-20USAUX and Xtron · 20,000 Btu/h
- AOODU-1D3SAokol · 19,800 Btu/h
- FPHSR24A3DFriedrich, Rheem + 1 more · 19,800 Btu/h
- MXZ-3D24NLMitsubishi Electric · 19,800 Btu/h
- MUZ-GS24NAAmerican Standard / Mitsubishi Electric, Mitsubishi Electric + 1 more · 19,700 Btu/h
Every 24,000 Btu (2-ton) unit, ranked by cooling efficiency, then heating efficiency
Floor area at the cold test point
The median certified output of 19,800 Btu/h at 5°F matches the size calculator’s heating estimate for these floor areas, rounded to about 10 sq ft. Each range divides that output by the climate band’s heating rates.
| Climate band | House condition | Btu/h per sq ft | Approximate sq ft |
|---|---|---|---|
| Mild | Drafty, little insulation | 24–42 | 470–830 |
| Mild | Typical | 16–26 | 760–1,240 |
| Mild | Tight, well insulated | 10–18 | 1,100–1,980 |
| Cold | Drafty, little insulation | 28–52 | 380–710 |
| Cold | Typical | 18–30 | 660–1,100 |
| Cold | Tight, well insulated | 12–22 | 900–1,650 |
| Very cold | Drafty, little insulation | 32–58 | 340–620 |
| Very cold | Typical | 22–38 | 520–900 |
| Very cold | Tight, well insulated | 16–28 | 710–1,240 |
This is an estimate, not a house-specific load calculation. Output stays at the 5°F test point for every band; it does not predict output at the band’s winter design temperature.
Certified values for DHX24CSB21S
4 pairings · 4 AHRI certificates
This pairing is the one shown above. Under all pairings, a single figure means every pairing agrees and a range means the pairing decides.
| This pairing | All pairings | |
|---|---|---|
| Heating | ||
| Heat output at 47°F normal speed | 24,000 Btu/h7.03 kWNR | 24,000 Btu/h7.03 kW |
| Heat output at 17°F full speed | 20,000 Btu/h5.86 kWNR | 20,000 Btu/h5.86 kW |
| Heat output at 5°F full speed | 19,800 Btu/h5.80 kWNR | 19,800 Btu/h5.80 kW |
| Heat output below 5°F | NR | NR |
| Cold output 5°F output as a % of the 47°F rating | 83%NR | |
| COP at 5°F full speed | 1.75NR | 1.75 |
| HSPF2 Region IV | 8.5NR | 8.5 |
| Cooling | ||
| Cooling capacity at 95°F full-load test | 22,000 Btu/h6.45 kWNR | 22,000 Btu/h6.45 kW |
| EER2 at 95°F | 12.5NR | 12.5 |
| SEER2 cooling season | 20.0NR | 20.0 |
| Cooling at other temperatures | NR | NR |
| Equipment and listing | ||
| Refrigerant | R-410A | |
| Compressor | Variable speed | |
| Indoor unit | DHX24NWB21S | 1 indoor unit |
| Furnace | No furnace | None |
| Cold-climate designation EPA's designation, as published | NC | NC |
| ENERGY STAR Most Efficient EPA's designation, as published | No | On no pairings |
| Where it is sold | US and Canada | US and Canada |
| Model string as certified | DHX24CSB21S | |
Pairings, by indoor-unit class
1 indoor unit · 4 certified pairings
One row per indoor unit certified with this outdoor unit.
Ductless indoor · 1 indoor unit
-
DHX24NWB21S (the pairing on screen) CHAMPION 19,800 Btu/h5.80 kWat 5°F, full speed
| Indoor unit | Brand | At 5°FBtu/hkW · full speed | At 47°FBtu/hkW · normal speed | At 95°FBtu/hkW · cooling | Cold output% of 47°F rating | COP 5°Ffull speed | Cold climate | Pairings |
|---|---|---|---|---|---|---|---|---|
| DHX24NWB21S (the pairing on screen) | CHAMPION | 19,8005.80 | 24,0007.03 | 22,0006.45 | 83% | 1.75 | NC | 4 |
Sold as, and units with identical certified values
Brands listing this model number
Other brands that list these model numbers
- Are Champion and Luxaire heat pumps the same?48 shared model numbers
- Are Champion and Coleman heat pumps the same?44 shared model numbers
- Are Coleman and Luxaire heat pumps the same?60 shared model numbers
Model number as listed
- DHX24CSB21S 4 pairings
What affects the price
We don't have prices. These things drive the cost.
- The size of the unit, and the indoor equipment on the same certificate.
- Whether existing ductwork is reused, altered, or replaced.
- The electrical work: a circuit, a disconnect, and sometimes a panel change.
- Refrigerant line length and how the outdoor unit is mounted.
- Permits and inspection, which vary by municipality.
- Removing and disposing of the old equipment.
- Local labor rates and how busy the season is.
- Rebates and tax credits, which change and have deadlines.
Product history
- DHX24CSB21S changed its certified heat output at 17°F on AHRI certificate 202208608 from 14,300 Btu/h to 20,000 Btu/h in the certified data between March 2025 and May 2025.
- DHX24CSB21S was in the certified data by September 2024.
History and definitions
History
- First certified record
- Most recent certified record
- Measurements reported
- Feb 17, 2025
- Status
- In the certified data
Field definitions
- COP
- Heat delivered for each unit of electricity used. A COP of 2.5 gives 2.5 times the heat of an electric baseboard heater.
- HSPF2
- Heating efficiency over a typical season. Higher uses less electricity.
- SEER2
- Cooling efficiency over a typical season. Higher uses less electricity.
- EER2
- Cooling output divided by electrical input in the 95°F full-load test, in Btu/h per watt.
- Cold output
- Heat output at 5°F as a percentage of the 47°F rating.
- % of rating at 17°F
- Heat output at 17°F as a percentage of the 47°F rating.
NR not in the certified dataNC not cold-climate certifiedSP single pairing onlyVP varies by pairing; see the pairings tableWD withdrawn since the certified data was last read