Lennox / AIR-SOURCE HEAT PUMP

EL21KLV-048-230A**

Elite EL21KLV SERIES · source records, page 4

190 published source records · source checked Sep 21, 2026

SEER2 range15.7–20.5BTU/Wh
HSPF2 range7.8–9.6BTU/Wh
Cooling capacity45,000–48,000BTU/h

Each efficiency range summarizes published EPA records for EL21KLV-048-230A**. 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 190 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/Wh15.7–20.5190 / 190
EER2 · BTU/Wh11–13.4190 / 190
HSPF2 · BTU/Wh7.8–9.6190 / 190
Cooling capacity · BTU/h45,000–48,000190 / 190
Heating capacity at 47°F / 8.3°C · BTU/h42,500–52,000190 / 190
Heating capacity at 17°F / −8.3°C · BTU/h34,200–44,500190 / 190
Heating capacity at 5°F / −15°C · BTU/h29,000–39,500190 / 190
COP at 5°F / −15°C1.88–2.2190 / 190
Equipment / loop typeHP - Split System190 / 190
Refrigerant / source-reported GWPR-454B (GWP:470 | Lower GWP)190 / 190
Compressor stagingContinuously variable190 / 190
Connected capabilityNo190 / 190

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-60C-**+TDR+ furnace: ML193UH110XE48C*Cold climate designationAHRI reference: 21712197420.008.50340002.12EPA 4006499
CK40HT-48C-**+TDR+ furnace: SL297UH080NV60C*Cold climate designationAHRI reference: 21711706320.008.10340001.96EPA 4006542
CK40HT-48C-**+TDR+ furnace: SL280UH080NV48B*Cold climate designationAHRI reference: 21711706720.008.10342001.96EPA 4006564
CK40HT-48C-**+TDR+ furnace: EL297UH110XV48C*Cold climate designationAHRI reference: 21711707020.008.10340001.96EPA 4006570
CK40HT-51/61C-**+TDR+ furnace: SL280UH080NV60C*Cold climate designationAHRI reference: 21744338320.008.50332002.04EPA 4044775
CK40HT-51/61C-**+TDR+ furnace: SL280UH090V60C*Cold climate designationAHRI reference: 21744338420.008.50332002.04EPA 4044776
CK40HT-51/61C-**+TDR+ furnace: SL280UH090XV60C*Cold climate designationAHRI reference: 21744338520.008.50332002.04EPA 4044779
CK40HT-51/61C-**+TDR+ furnace: SL280UH110V60C*Cold climate designationAHRI reference: 21744338720.008.50332002.04EPA 4044780
CK40HT-51/61C-**+TDR+ furnace: SL280UH110XV60C*Cold climate designationAHRI reference: 21744338820.008.50332002.04EPA 4044781
CK40HT-51/61C-**+TDR+ furnace: SLP99UH090XV48C*Cold climate designationAHRI reference: 21744339320.008.50334002.04EPA 4044786
CK40HT-51/61C-**+TDR+ furnace: SLP99UH110XV60C*Cold climate designationAHRI reference: 21744339620.008.50332002.04EPA 4044788
CK40HT-51/61C-**+TDR+ furnace: EL297UH090XV48C*Cold climate designationAHRI reference: 21744340020.008.50334002.04EPA 4044793
CK40HT-51/61C-**+TDR+ furnace: EL297UH110XV48C*Cold climate designationAHRI reference: 21744340520.008.50332002.04EPA 4044798
CK40HT-51/61C-**+TDR+ furnace: EL297UH110XV60C*Cold climate designationAHRI reference: 21744340620.008.50332002.04EPA 4044800
CK40[C,U]T-60C-**+TDR+ furnace: ML297UH110XV60C*AHRI reference: 21869072820.009.00312002.00EPA 4679261
CK40HT-60D-**+TDR+ furnace: ML297UH090XV60C*AHRI reference: 21869516020.007.80316001.94EPA 4691581
CK40[C,U]T-60D-**+TDR+ furnace: ML297UH090XV60C*AHRI reference: 21869515820.008.00310001.88EPA 4691583
CK40[C,U]T-60C-**+TDR+ furnace: ML297UH090XV60C*AHRI reference: 21869515720.008.20310002.00EPA 4691584
CK40HT-60D-**+TDR+ furnace: ML297UH135XV60D*AHRI reference: 21869512520.008.00316001.94EPA 4691591
CK40[C,U]T-60D-**+TDR+ furnace: ML297UH135XV60D*Cold climate designationAHRI reference: 21869512420.008.10308001.88EPA 4691592

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 →