Lennox / AIR-SOURCE HEAT PUMP

EL21KLV-024-230A**

Elite EL21KLV SERIES · source records, page 3

174 published source records · source checked Sep 21, 2026

SEER2 range15.2–21BTU/Wh
HSPF2 range8.1–10.2BTU/Wh
Cooling capacity21,600–24,000BTU/h

Each efficiency range summarizes published EPA records for EL21KLV-024-230A**. The highest SEER2 and HSPF2 may belong to different combinations. Open a source record below to see its ratings and the scope of its component information.

Model patterns and component strings are preserved exactly. How to read model patterns and combinations →

Heating performance & equipment details

Ranges include the 174 published source records for this model. Values in different rows may describe different configurations. Open an individual record to compare values from the same test configuration.

Reported fieldValue / rangeRecords supplying it
SEER2 · BTU/Wh15.2–21174 / 174
EER2 · BTU/Wh11.2–13.5174 / 174
HSPF2 · BTU/Wh8.1–10.2174 / 174
Cooling capacity · BTU/h21,600–24,000174 / 174
Heating capacity at 47°F / 8.3°C · BTU/h23,600–27,400174 / 174
Heating capacity at 17°F / −8.3°C · BTU/h18,700–22,400174 / 174
Heating capacity at 5°F / −15°C · BTU/h13,900–18,600174 / 174
COP at 5°F / −15°C1.7–2.3174 / 174
Equipment / loop typeHP - Split System174 / 174
Refrigerant / source-reported GWPR-454B (GWP:470 | Lower GWP)174 / 174
Compressor stagingContinuously variable174 / 174
Connected capabilityNo174 / 174

47°F = 8.3°C; 17°F = −8.3°C; 5°F = −15°C. COP is dimensionless. These are reported rating points, not a prediction of a particular home’s heat demand or operating limit.

Matched systems

Each row is one source record. The component column distinguishes listed combinations from outdoor-model ratings without an indoor configuration.

Indoor unit / required furnaceSEER2BTU/WhHSPF2BTU/WhHeating capacity at 5°F / −15°CBTU/hCOP at 5°F / −15°CRecord & comparison
CK40[C,U]T-30B-**+TDR+ furnace: ML180UH070V48B*Cold climate designationAHRI reference: 21712155019.509.00174002.12EPA 4006437
CK40[C,U]T-30B-**+TDR+ furnace: ML193UH045XE36B*Cold climate designationAHRI reference: 21712155419.509.80177002.10EPA 4006441
CK40[C,U]T-30B-**+TDR+ furnace: ML193UH070XE36B*Cold climate designationAHRI reference: 21712155519.509.80177002.10EPA 4006442
CK40[C,U]T-30B-**+TDR+ furnace: ML296UH045XV36B*Cold climate designationAHRI reference: 21712155919.509.50174002.10EPA 4006446
CK40[C,U]T-30B-**+TDR+ furnace: ML296UH070XV36B*Cold climate designationAHRI reference: 21712156019.509.60175002.10EPA 4006447
CBK45UHET-024-230-**AHRI reference: 21744313519.5010.20173002.12EPA 4044429
CK40[C,U]T-24A-**+TDR+ furnace: EL280UH045E36A*AHRI reference: 21744307319.508.20139001.74EPA 4044454
CK40[C,U]T-24B-**+TDR+ furnace: SL297UH040NV36B*AHRI reference: 21744309619.508.50142001.74EPA 4044476
CK40[C,U]T-24B-**+TDR+ furnace: ML180UH070V48B*AHRI reference: 21744312219.508.10141001.76EPA 4044500
CK40[C,U]T-24B-**+TDR+ furnace: SL280UH090V36B*AHRI reference: 21744312519.508.50141001.76EPA 4044501
CK40DT-30/36B-**+TDR+ furnace: ML193DF045XE36B*AHRI reference: 21744313819.508.50163002.02EPA 4044507
CK40DT-30/36B-**+TDR+ furnace: SL280DF060NV36B*AHRI reference: 21744314219.508.50163002.00EPA 4044513
CK40DT-30/36B-**+TDR+ furnace: EL297DF070XV48B*AHRI reference: 21744314619.508.50164001.98EPA 4044517
CK40DT-30/36C-**+TDR+ furnace: SLP99DF090XV48C*AHRI reference: 21744315519.508.50162002.02EPA 4044525
CK40HT-30B-**+TDR+ furnace: ML193UH045XE36B*Cold climate designationAHRI reference: 21744316719.509.00172002.04EPA 4044563
CK40HT-30B-**+TDR+ furnace: ML193UH070XE36B*Cold climate designationAHRI reference: 21744316819.509.00171002.06EPA 4044565
CK40HT-30B-**+TDR+ furnace: ML296UH045XV36B*Cold climate designationAHRI reference: 21744317119.509.00169002.04EPA 4044568
CK40HT-30B-**+TDR+ furnace: SL280UH080NV48B*Cold climate designationAHRI reference: 21744317319.509.00172002.04EPA 4044569
CK40HT-30B-**+TDR+ furnace: SL280UH090V48B*Cold climate designationAHRI reference: 21744317519.509.40170002.08EPA 4044571
CK40HT-30B-**+TDR+ furnace: SL280UH090XV48B*Cold climate designationAHRI reference: 21744317919.509.40170002.08EPA 4044575

Sources and documentation

The table uses public EPA ENERGY STAR data. AHRI references are reported by EPA and have not been independently checked with AHRI. Source records do not establish availability, installation suitability or rebate eligibility.

No manufacturer manual has been matched to this model.

Collection method, revision history and known limitations →