THF2B42T21
LX SERIES · source records, page 22
430 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 430 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 | 430 / 430 |
| EER2 · BTU/Wh | 11.7–12 | 430 / 430 |
| HSPF2 · BTU/Wh | 7.8–8.1 | 430 / 430 |
| Cooling capacity · BTU/h | 39,500–42,000 | 430 / 430 |
| Heating capacity at 47°F / 8.3°C · BTU/h | 37,400–41,000 | 430 / 430 |
| Heating capacity at 17°F / −8.3°C · BTU/h | 24,200–26,600 | 430 / 430 |
| Heating capacity at 5°F / −15°C · BTU/h | 18,400–22,600 | 430 / 430 |
| COP at 5°F / −15°C | 1.98–2.42 | 430 / 430 |
| Equipment / loop type | HP - Split System | 430 / 430 |
| Refrigerant / source-reported GWP | R-410A (GWP:2088) | 430 / 430 |
| Compressor staging | Two-stage | 430 / 430 |
| Connected capability | No | 430 / 430 |
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 |
|---|---|---|---|---|---|
XAHD60GBCN1+ furnace: Z8ES100C16LMPS1AHRI reference: 212477868 | 15.20 | 8.10 | 22000 | 2.34 | EPA 3991151 → |
XAHD60GBCN1+ furnace: Z8ES080C20LMPS1AHRI reference: 212477892 | 15.20 | 8.10 | 22000 | 2.34 | EPA 3991159 → |
XAHD60GBCN1+ furnace: Z8ES080C20SMPS1AHRI reference: 212477887 | 15.20 | 8.10 | 22000 | 2.34 | EPA 3991160 → |
XAFD60GXXN1+TXV+ furnace: Z8ET100C16LMPS1AHRI reference: 212594320 | 15.20 | 8.10 | 20800 | 2.28 | EPA 3991240 → |
XAFD60GBCN1+ furnace: Z8ET100C16LMPS1AHRI reference: 212594325 | 15.20 | 8.10 | 20800 | 2.28 | EPA 3991243 → |
XAHC60GBCN1+ furnace: Z8ET080B12LMPS1AHRI reference: 212594340 | 15.20 | 8.10 | 21800 | 2.32 | EPA 3991245 → |
XAHD60GBCN1+ furnace: Z8ET100C16LMPS1AHRI reference: 212594495 | 15.20 | 8.10 | 21800 | 2.34 | EPA 3991571 → |
XAHC60GBCN1+ furnace: Z9ET100C16SMPS1AHRI reference: 216375203 | 15.20 | 7.80 | 21400 | 2.30 | EPA 3992198 → |
XAHD60GBCN1+ furnace: Z9ET120D20SMPS1AHRI reference: 216375206 | 15.20 | 7.80 | 21800 | 2.34 | EPA 3992199 → |
XAFD60GBCN1+ furnace: Z9ET120D20SMPS1AHRI reference: 216375205 | 15.20 | 7.80 | 20800 | 2.24 | EPA 3992200 → |
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 →