THF2B42T21
LX SERIES · source records, page 12
419 published source records · source checked Sep 21, 2026
Each efficiency range summarizes published EPA records for THF2B42T21. 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 419 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 field | Value / range | Records supplying it |
|---|---|---|
| SEER2 · BTU/Wh | 15.2–16 | 419 / 419 |
| EER2 · BTU/Wh | 11.7–12 | 419 / 419 |
| HSPF2 · BTU/Wh | 7.8–8.1 | 419 / 419 |
| Cooling capacity · BTU/h | 39,500–42,000 | 419 / 419 |
| Heating capacity at 47°F / 8.3°C · BTU/h | 37,400–41,000 | 419 / 419 |
| Heating capacity at 17°F / −8.3°C · BTU/h | 24,200–26,600 | 419 / 419 |
| Heating capacity at 5°F / −15°C · BTU/h | 18,400–22,600 | 419 / 419 |
| COP at 5°F / −15°C | 1.98–2.42 | 419 / 419 |
| Equipment / loop type | HP - Split System | 419 / 419 |
| Refrigerant / source-reported GWP | R-410A (GWP:2088) | 419 / 419 |
| Compressor staging | Two-stage | 419 / 419 |
| Connected capability | No | 419 / 419 |
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 furnace | SEER2BTU/Wh | HSPF2BTU/Wh | Heating capacity at 5°F / −15°CBTU/h | COP at 5°F / −15°C | Record & comparison |
|---|---|---|---|---|---|
XAFD48FBCN1+ furnace: Z8ES100C20LMPS1AHRI reference: 212475817 | 15.20 | 8.10 | 21000 | 2.22 | EPA 2484682 → |
XAFC48FBCN1+ furnace: Z8ES100B12SMPS1AHRI reference: 212416294 | 15.20 | 7.80 | 21200 | 2.20 | EPA 2484922 → |
XAFC48FXXN1+TXV+ furnace: Z8ES100C20SMPS1AHRI reference: 212416219 | 15.20 | 8.10 | 21000 | 2.22 | EPA 2485548 → |
XAHC48FBCN1+ furnace: Z8ET100C16LMPS1AHRI reference: 212415979 | 15.20 | 7.80 | 21800 | 2.36 | EPA 2485580 → |
XAFC48FXXN1+TXV+ furnace: Z8ES100B12SMPS1AHRI reference: 212416289 | 15.20 | 7.80 | 21200 | 2.20 | EPA 2486163 → |
XAFC48FBCN1+ furnace: TMLE100C20MP11AHRI reference: 210845613 | 15.20 | 8.10 | 19600 | 2.04 | EPA 2837416 → |
XAFC48FBCN1+ furnace: TM8E120C20MP11AHRI reference: 210845718 | 15.20 | 8.10 | 19600 | 2.04 | EPA 2837420 → |
XAFC48FBCN1+ furnace: TM8E080C20MP11AHRI reference: 210845722 | 15.20 | 8.10 | 19800 | 2.04 | EPA 2837424 → |
XAHD48FBCN1+ furnace: TMLV100C16MP12AHRI reference: 210845488 | 15.20 | 8.10 | 20400 | 2.12 | EPA 2837476 → |
XAHC48FBCN1+ furnace: TPLC080B12MP13AHRI reference: 210845489 | 15.20 | 7.80 | 18900 | 2.00 | EPA 2837477 → |
XAFD48FBCN1+ furnace: TPLC100C16MP13AHRI reference: 210845366 | 15.20 | 7.80 | 19800 | 2.02 | EPA 2837528 → |
XAFC48FBCN1+ furnace: TMLV100C16MP12AHRI reference: 210846607 | 15.20 | 8.10 | 19200 | 2.02 | EPA 2837564 → |
XAFD48FBCN1+ furnace: TPLC080C16MP13AHRI reference: 210846690 | 15.20 | 7.80 | 19800 | 2.02 | EPA 2837580 → |
XAFD48FBCN1+ furnace: TMLV100C16MP12AHRI reference: 210847734 | 15.20 | 7.80 | 19800 | 2.02 | EPA 2837688 → |
XAFC48FBCN1+ furnace: TM8E100C20MP11AHRI reference: 210847852 | 15.20 | 8.10 | 19600 | 2.04 | EPA 2837718 → |
XAHD48FBCN1+ furnace: TPLC100C16MP13AHRI reference: 210850332 | 15.20 | 8.10 | 20400 | 2.12 | EPA 2837836 → |
XAHD48FBCN1+ furnace: TPLC080C16MP13AHRI reference: 210851243 | 15.20 | 8.10 | 20400 | 2.12 | EPA 2837882 → |
XAFC48FBCN1+ furnace: TPLC100C16MP13AHRI reference: 210849062 | 15.20 | 8.10 | 19200 | 2.02 | EPA 2837935 → |
XAFC48FBCN1+ furnace: TPLC080C16MP13AHRI reference: 210851393 | 15.20 | 8.10 | 19200 | 2.02 | EPA 2838039 → |
XAFC48FBCN1+ furnace: TMLE120C20MP11AHRI reference: 210850558 | 15.20 | 8.10 | 19600 | 2.04 | EPA 2838133 → |
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 →