Lennox / AIR-SOURCE HEAT PUMP

EL21KLV-036-230A**

Elite EL21KLV SERIES · source records, page 2

294 published source records · source checked Sep 21, 2026

SEER2 range15.2–20BTU/Wh
HSPF2 range8.5–10.4BTU/Wh
Cooling capacity32,000–34,800BTU/h

Each efficiency range summarizes published EPA records for EL21KLV-036-230A**. 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 294 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/Wh15.2–20294 / 294
EER2 · BTU/Wh11–12.2294 / 294
HSPF2 · BTU/Wh8.5–10.4294 / 294
Cooling capacity · BTU/h32,000–34,800294 / 294
Heating capacity at 47°F / 8.3°C · BTU/h30,000–35,400294 / 294
Heating capacity at 17°F / −8.3°C · BTU/h26,600–32,400294 / 294
Heating capacity at 5°F / −15°C · BTU/h18,400–25,400294 / 294
COP at 5°F / −15°C1.84–2.48294 / 294
Equipment / loop typeHP - Split System294 / 294
Refrigerant / source-reported GWPR-454B (GWP:470 | Lower GWP)294 / 294
Compressor stagingContinuously variable294 / 294
Connected capabilityNo294 / 294

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: SL297UH040NV36B*AHRI reference: 21744324519.0010.40232002.24EPA 4044641
CK40[C,U]T-30B-**+TDR+ furnace: SLP99UH070XV36B*AHRI reference: 21744324719.0010.40228002.28EPA 4044642
CK40[C,U]T-30B-**+TDR+ furnace: EL297UH045XV36B*AHRI reference: 21744325019.0010.40230002.24EPA 4044646
CK40[C,U]T-30B-**+TDR+ furnace: EL297UH070XV36B*AHRI reference: 21744325119.0010.40230002.26EPA 4044647
CK40DT-30/36B-**+TDR+ furnace: ML193DF045XE36B*AHRI reference: 21744325619.009.00195002.26EPA 4044651
CK40DT-30/36B-**+TDR+ furnace: SL280DF090V48B*AHRI reference: 21744326319.009.00197002.24EPA 4044659
CK40DT-30/36B-**+TDR+ furnace: EL297DF045XV36B*AHRI reference: 21744326419.009.20191002.40EPA 4044660
CK40HT-30B-**+TDR+ furnace: EL280UH090E36B*Cold climate designationAHRI reference: 21744327019.009.00224002.46EPA 4044664
CK40DT-30/36C-**+TDR+ furnace: SLP99DF090XV48C*AHRI reference: 21744330519.009.20195002.28EPA 4044699
CK40HT-30B-**+TDR+ furnace: SL280UH090V36B*Cold climate designationAHRI reference: 21744331619.009.40226002.46EPA 4044711
CK40HT-30B-**+TDR+ furnace: SL280UH090V48B*Cold climate designationAHRI reference: 21744331719.009.40228002.46EPA 4044713
CK40HT-30B-**+TDR+ furnace: SLP99UH070XV36B*Cold climate designationAHRI reference: 21744332119.009.40228002.44EPA 4044715
CK40HT-30B-**+TDR+ furnace: SL297UH040NV36B*Cold climate designationAHRI reference: 21744331819.009.00232002.38EPA 4044717
CK40HT-30B-**+TDR+ furnace: SL280UH090XV48B*Cold climate designationAHRI reference: 21744332619.009.40228002.46EPA 4044722
CK40HT-30B-**+TDR+ furnace: EL297UH070XV36B*Cold climate designationAHRI reference: 21744333419.009.40228002.42EPA 4044729
CK40[C,U]T-30A-**+TDR+ furnace: EL180UH040NE36A*AHRI reference: 21744340719.0010.40226002.26EPA 4044799
CBK47UHET-036-460-**Cold climate designationAHRI reference: 21759541719.008.50252002.10EPA 4479674
CK40[C,U]T-36C-**+TDR+ furnace: ML297UH110XV60C*Cold climate designationAHRI reference: 21873259819.008.50220002.02EPA 4705632
CK40[C,U]T-36B-**+TDR+ furnace: ML180UH070E36B*Cold climate designationAHRI reference: 21712196618.508.50220002.06EPA 4006514
CK40[C,U]T-36B-**+TDR+ furnace: ML180UH070XE36B*Cold climate designationAHRI reference: 21712196718.508.50220002.06EPA 4006515

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 →