THF2B42T21
LX SERIES · source records, page 12
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 |
|---|---|---|---|---|---|
XAFC48FBCN1+ furnace: Z8ES120C20LMPS1AHRI reference: 212488603 | 15.20 | 7.80 | 21200 | 2.20 | EPA 2482926 → |
XAFC48FXXN1+TXV+ furnace: Z8ES120C20SMPS1AHRI reference: 212416125 | 15.20 | 7.80 | 21200 | 2.20 | EPA 2483752 → |
XAFC48FBCN1+ furnace: Z8ES120C20SMPS1AHRI reference: 212416130 | 15.20 | 7.80 | 21200 | 2.20 | EPA 2483755 → |
XAFC48FBCN1+ furnace: Z8ES100C16LMPS1AHRI reference: 212488636 | 15.20 | 8.10 | 21000 | 2.22 | EPA 2483896 → |
XAFC48FXXN1+TXV+ furnace: Z8ES080B12LMPS1AHRI reference: 212488671 | 15.20 | 8.10 | 20800 | 2.20 | EPA 2484167 → |
XAFC48FBCN1+ furnace: Z8ES080B12LMPS1AHRI reference: 212488678 | 15.20 | 8.10 | 20800 | 2.20 | EPA 2484181 → |
XAFC48FXXN1+TXV+ furnace: Z8ET080B12LMPS1AHRI reference: 212416060 | 15.20 | 8.10 | 20800 | 2.20 | EPA 2484289 → |
XAFC48FBCN1+ furnace: Z8ET080B12LMPS1AHRI reference: 212416065 | 15.20 | 8.10 | 20800 | 2.20 | EPA 2484290 → |
XAHC48FBCN1+ furnace: Z9ES100C16SMPS1AHRI reference: 212415674 | 15.20 | 7.80 | 22200 | 2.32 | EPA 2484323 → |
XAFD48FBCN1+ furnace: Z8ES100C16SMPS1AHRI reference: 212416255 | 15.20 | 8.10 | 21000 | 2.22 | EPA 2484624 → |
XAFD48FBCN1+ furnace: Z8ES100C20LMPS1AHRI reference: 212475805 | 15.20 | 8.10 | 21000 | 2.22 | EPA 2484672 → |
XAFC48FXXN1+TXV+ furnace: Z8ES100B12SMPS1AHRI reference: 212416285 | 15.20 | 7.80 | 21200 | 2.20 | EPA 2484915 → |
XAFC48FBCN1+ furnace: Z8ES100B12SMPS1AHRI reference: 212416290 | 15.20 | 7.80 | 21200 | 2.20 | EPA 2484918 → |
XAFC48FBCN1+ furnace: Z8ES100C16SMPS1AHRI reference: 212416265 | 15.20 | 8.10 | 21000 | 2.22 | EPA 2484919 → |
XAHD48FBCN1+ furnace: Z9ET120D20SMPS1AHRI reference: 212415377 | 15.20 | 8.10 | 22600 | 2.32 | EPA 2484953 → |
XAFD48FBCN1+ furnace: Z8ES120C20SMPS1AHRI reference: 212416120 | 15.20 | 8.10 | 21200 | 2.20 | EPA 2485223 → |
XAFD48FBCN1+ furnace: Z8ES100C20SMPS1AHRI reference: 212416210 | 15.20 | 8.10 | 21000 | 2.22 | EPA 2485539 → |
XAFC48FXXN1+TXV+ furnace: Z8ES100C20SMPS1AHRI reference: 212416215 | 15.20 | 8.10 | 21000 | 2.22 | EPA 2485547 → |
XAFC48FBCN1+ furnace: Z8ES100C20SMPS1AHRI reference: 212416220 | 15.20 | 8.10 | 21000 | 2.22 | EPA 2485550 → |
XAHC48FXXN1+TXV+ furnace: TM9Y060B12MP11AHRI reference: 210347697 | 15.20 | 7.80 | 19200 | 2.00 | EPA 2785286 → |
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 →