THF2B42T21
LX SERIES · source records, page 18
461 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 461 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 | 461 / 461 |
| EER2 · BTU/Wh | 11.7–12 | 461 / 461 |
| HSPF2 · BTU/Wh | 7.8–8.1 | 461 / 461 |
| Cooling capacity · BTU/h | 39,500–42,000 | 461 / 461 |
| Heating capacity at 47°F / 8.3°C · BTU/h | 37,400–41,000 | 461 / 461 |
| Heating capacity at 17°F / −8.3°C · BTU/h | 24,200–26,600 | 461 / 461 |
| Heating capacity at 5°F / −15°C · BTU/h | 18,400–22,600 | 461 / 461 |
| COP at 5°F / −15°C | 1.98–2.42 | 461 / 461 |
| Equipment / loop type | HP - Split System | 461 / 461 |
| Refrigerant / source-reported GWP | R-410A (GWP:2088) | 461 / 461 |
| Compressor staging | Two-stage | 461 / 461 |
| Connected capability | No | 461 / 461 |
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 |
|---|---|---|---|---|---|
XAFC48FXXN1+TXV+ furnace: TM9E100C20MP12AHRI reference: 210351761 | 15.20 | 8.10 | 19600 | 2.04 | EPA 3985570 → |
XAFC48FBCN1+ furnace: TM9E100C20MP12AHRI reference: 210351767 | 15.20 | 8.10 | 19600 | 2.04 | EPA 3985578 → |
XAFC48FXXN1+TXV+ furnace: TM8Y100C20MP11AHRI reference: 210351803 | 15.20 | 8.10 | 19600 | 2.04 | EPA 3985583 → |
XAFC48FBCN1+ furnace: TM8Y100C20MP11AHRI reference: 210351811 | 15.20 | 8.10 | 19600 | 2.04 | EPA 3985589 → |
XAFC48FBCN1+ furnace: TM9V100C16MP12AHRI reference: 210347720 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3985858 → |
XAFC48FXXN1+TXV+ furnace: LP9C100C16MP13AHRI reference: 210347718 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3985860 → |
XAFC48FBCN1+ furnace: TP9C100C16MP13AHRI reference: 210347728 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3985863 → |
XAFC48FBCN1+ furnace: LP9C100C16MP13AHRI reference: 210347736 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3985869 → |
XAHC48FBCN1+ furnace: TM9V080B12MP12AHRI reference: 210347750 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3985870 → |
XAHC48FBCN1+ furnace: TP9C080B12MP13AHRI reference: 210347754 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3985875 → |
XAHC48FBCN1+ furnace: LP9C080B12MP13AHRI reference: 210347758 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3985878 → |
XAFD48FBCN1+ furnace: TM9E120D20MP12AHRI reference: 210347766 | 15.20 | 8.10 | 19300 | 2.04 | EPA 3985882 → |
XAHD48FBCN1+ furnace: TM9E100C20MP12AHRI reference: 210347778 | 15.20 | 8.10 | 19800 | 2.12 | EPA 3985885 → |
XAFD48FBCN1+ furnace: TM9E100C20MP12AHRI reference: 210347790 | 15.20 | 8.10 | 19600 | 2.04 | EPA 3985888 → |
XAFC48FXXN1+TXV+ furnace: TL9E080C16UH11AHRI reference: 210347970 | 15.20 | 7.80 | 19600 | 2.00 | EPA 3985899 → |
XAFC48FBCN1+ furnace: TL9E080C16UH11AHRI reference: 210347974 | 15.20 | 7.80 | 19600 | 2.00 | EPA 3985901 → |
XAFC48FXXN1+TXV+ furnace: TM8Y080C16MP11AHRI reference: 210344835 | 15.20 | 8.10 | 19200 | 2.04 | EPA 3986021 → |
XAFC48FBCN1+ furnace: TM8Y080C16MP11AHRI reference: 210344841 | 15.20 | 8.10 | 19200 | 2.04 | EPA 3986025 → |
XAFC48FXXN1+TXV+ furnace: TM8V100C16MP12AHRI reference: 210344853 | 15.20 | 8.10 | 19200 | 2.02 | EPA 3986030 → |
XAFC48FXXN1+TXV+ furnace: TM8V080C16MP12AHRI reference: 210344857 | 15.20 | 8.10 | 19200 | 2.02 | EPA 3986032 → |
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 →