THF2B42T21
LX SERIES · source records, page 3
460 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 460 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 | 460 / 460 |
| EER2 · BTU/Wh | 11.7–12 | 460 / 460 |
| HSPF2 · BTU/Wh | 7.8–8.1 | 460 / 460 |
| Cooling capacity · BTU/h | 39,500–42,000 | 460 / 460 |
| Heating capacity at 47°F / 8.3°C · BTU/h | 37,400–41,000 | 460 / 460 |
| Heating capacity at 17°F / −8.3°C · BTU/h | 24,200–26,600 | 460 / 460 |
| Heating capacity at 5°F / −15°C · BTU/h | 18,400–22,600 | 460 / 460 |
| COP at 5°F / −15°C | 1.98–2.42 | 460 / 460 |
| Equipment / loop type | HP - Split System | 460 / 460 |
| Refrigerant / source-reported GWP | R-410A (GWP:2088) | 460 / 460 |
| Compressor staging | Two-stage | 460 / 460 |
| Connected capability | No | 460 / 460 |
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: Z8ES130D20LMPS1AHRI reference: 212477570 | 16.00 | 8.10 | 20800 | 2.24 | EPA 2483509 → |
XAFC48FBCN1+ furnace: Z8ES080C16LMPS1AHRI reference: 212486347 | 16.00 | 8.10 | 21200 | 2.24 | EPA 2483592 → |
XAHD48FBCN1+ furnace: Z8ET120C20LMPS1AHRI reference: 212415875 | 16.00 | 8.10 | 22200 | 2.34 | EPA 2483778 → |
XAHC48FBCN1+ furnace: Z8ET120C20LMPS1AHRI reference: 212415885 | 16.00 | 8.10 | 22000 | 2.36 | EPA 2483781 → |
XAHD48FBCN1+ furnace: Z8ES120C16LMPS1AHRI reference: 212475776 | 16.00 | 8.10 | 22000 | 2.36 | EPA 2483802 → |
XAFC48FXXN1+TXV+ furnace: Z8ES080C20LMPS1AHRI reference: 212488650 | 16.00 | 8.10 | 21000 | 2.22 | EPA 2483889 → |
XAHD48FBCN1+ furnace: Z8ES120C16SMPS1AHRI reference: 212416145 | 16.00 | 8.10 | 22000 | 2.36 | EPA 2484022 → |
XAFD48FBCN1+ furnace: Z8ET120C20LMPS1AHRI reference: 212415895 | 16.00 | 8.10 | 21200 | 2.20 | EPA 2484044 → |
XAFC48FXXN1+TXV+ furnace: Z8ET120C20LMPS1AHRI reference: 212415900 | 16.00 | 8.10 | 20800 | 2.22 | EPA 2484048 → |
XAFC48FBCN1+ furnace: Z8ET120C20LMPS1AHRI reference: 212415905 | 16.00 | 8.10 | 20800 | 2.22 | EPA 2484050 → |
XAFC48FXXN1+TXV+ furnace: Z8ES080C20SMPS1AHRI reference: 212416330 | 16.00 | 8.10 | 21000 | 2.22 | EPA 2484053 → |
XAHD48FBCN1+ furnace: Z8ET100C20LMPS1AHRI reference: 212415920 | 16.00 | 8.10 | 21800 | 2.38 | EPA 2484058 → |
XAFC48FBCN1+ furnace: Z8ES080C20LMPS1AHRI reference: 212488657 | 16.00 | 8.10 | 21000 | 2.22 | EPA 2484168 → |
XAFD48FBCN1+ furnace: Z8ES130D20SMPS1AHRI reference: 212416090 | 16.00 | 8.10 | 20800 | 2.24 | EPA 2484586 → |
XAHD48FBCN1+ furnace: Z8ES120C20SMPS1AHRI reference: 212416100 | 16.00 | 8.10 | 22200 | 2.34 | EPA 2484593 → |
XAHC48FBCN1+ furnace: Z8ES100B12SMPS1AHRI reference: 212416280 | 16.00 | 8.10 | 22200 | 2.34 | EPA 2484639 → |
XAHC48FBCN1+ furnace: Z8ES120C20SMPS1AHRI reference: 212416110 | 16.00 | 8.10 | 22200 | 2.34 | EPA 2484910 → |
XAHC48FBCN1+ furnace: Z8ES100C20SMPS1AHRI reference: 212416200 | 16.00 | 8.10 | 22200 | 2.36 | EPA 2485261 → |
XAFD48FBCN1+ furnace: Z8ET100C20LMPS1AHRI reference: 212415940 | 16.00 | 8.10 | 20800 | 2.24 | EPA 2485292 → |
XAFC48FBCN1+ furnace: Z8ET100C20LMPS1AHRI reference: 212415950 | 16.00 | 8.10 | 21000 | 2.22 | EPA 2485293 → |
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 →