Lennox / AIR-SOURCE HEAT PUMP
EL21KLV-036-230A**
Elite EL21KLV SERIES · EPA record 4044715
Source checked Sep 21, 2026
Performance & equipment details
Values below belong to EPA record 4044715. Temperature points and test metrics are preserved as reported. Missing and zero values are not substituted with estimates.
| Metric or attribute | Source value |
|---|---|
| SEER2 · BTU/Wh | 19.00 |
| EER2 · BTU/Wh | 11.00 |
| HSPF2 · BTU/Wh | 9.40 |
| Cooling capacity · BTU/h | 33400 |
| Heating capacity at 47°F / 8.3°C · BTU/h | 31200 |
| Heating capacity at 17°F / −8.3°C · BTU/h | 28200 |
| Heating capacity at 5°F / −15°C · BTU/h | 22800 |
| COP at 5°F / −15°C | 2.44 |
| Equipment / loop type | HP - Split System |
| Refrigerant / source-reported GWP | R-454B (GWP:470 | Lower GWP) |
| Compressor staging | Continuously variable |
| Connected capability | No |
This listed system
These ratings apply to the listed configuration. Changing a component may change performance.
Outdoor unit
+EL21KLV-036-230A**Indoor unit
+CK40HT-30B-**+TDRRequired furnace
SLP99UH070XV36B*AHRI reference 217443321 · reported by ENERGY STAR; no direct AHRI data connection.
All source records for EL21KLV-036-230A** →Specifications & provenance
Every value below is preserved from the source record. Checked Sep 21, 2026. Asterisks and other model wildcards are retained as published.
| Source field | Reported value | Evidence |
|---|---|---|
| pd id | 4044715 | EPA Sep 21, 2026 |
| markets | United States, Canada | EPA Sep 21, 2026 |
| cop at 5 f | 2.44 | EPA Sep 21, 2026 |
| eer2 btu wh | 11.00 | EPA Sep 21, 2026 |
| series name | Elite EL21KLV SERIES | EPA Sep 21, 2026 |
| cold climate | Yes | EPA Sep 21, 2026 |
| hspf2 btu wh | 9.40 | EPA Sep 21, 2026 |
| model number | EL21KLV-036-230A** | EPA Sep 21, 2026 |
| product type | HP - Split System | EPA Sep 21, 2026 |
| seer2 btu wh | 19.00 | EPA Sep 21, 2026 |
| date certified | 2025-07-03T00:00:00.000 | EPA Sep 21, 2026 |
| manufacturer type | System Manufacturer | EPA Sep 21, 2026 |
| compressor staging | Continuously variable | EPA Sep 21, 2026 |
| energy star partner | Lennox Industries | EPA Sep 21, 2026 |
| connected capability | No | EPA Sep 21, 2026 |
| furnace model number | SLP99UH070XV36B* | EPA Sep 21, 2026 |
| refrigerant with gwp | R-454B (GWP:470 | Lower GWP) | EPA Sep 21, 2026 |
| ahri reference number | 217443321 | EPA Sep 21, 2026 |
| cooling capacity btu h | 33400 | EPA Sep 21, 2026 |
| outdoor unit brand name | Lennox | EPA Sep 21, 2026 |
| date available on market | 2025-05-08T00:00:00.000 | EPA Sep 21, 2026 |
| indoor unit model number | CK40HT-30B-**+TDR | EPA Sep 21, 2026 |
| installation capabilities | Automatic system discovery,Test mode for manual measurements,Preprogrammed system tests | EPA Sep 21, 2026 |
| energy star model identifier | ES_1082495_EL21KLV-036-230A**_05092025013532_28217443321 | EPA Sep 21, 2026 |
| heating capacity at 5 f btu h | 22800 | EPA Sep 21, 2026 |
| meets most efficient criteria | Yes | EPA Sep 21, 2026 |
| heating capacity at 17 f btu h | 28200 | EPA Sep 21, 2026 |
| heating capacity at 47 f btu h | 31200 | EPA Sep 21, 2026 |
| meets peak cooling requirements | Yes | EPA Sep 21, 2026 |
| controls verification procedure cvp test | DOE Federal CVP Test | EPA Sep 21, 2026 |