THF2B42T21
LX SERIES · source records, page 16
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 |
|---|---|---|---|---|---|
XAHD48FBCN1+JMC20D2SN1AHRI reference: 214799735 | 15.20 | 8.10 | 22200 | 2.40 | EPA 3559779 → |
XAFC60GBCN1+ furnace: Z8ET100C16LMPS1AHRI reference: 212594183 | 15.20 | 7.80 | 20200 | 2.22 | EPA 3560556 → |
XAHC60GBCN1+ furnace: Z8ET100C16LMPS1AHRI reference: 212594678 | 15.20 | 8.10 | 21600 | 2.34 | EPA 3560561 → |
XAUC48FXXN1+TXV+ furnace: TL8E080C16UH11AHRI reference: 210347103 | 15.20 | 8.10 | 19300 | 2.02 | EPA 3720628 → |
XAUC48FXXN1+TXV+ furnace: TP9C100C16MP13AHRI reference: 210347732 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3721272 → |
XAUC48FXXN1+TXV+ furnace: TM9V100C16MP12AHRI reference: 210347724 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3721493 → |
XAUC48FXXN1+TXV+ furnace: TM9Y080C16MP11AHRI reference: 210347692 | 15.20 | 7.80 | 19600 | 2.00 | EPA 3721501 → |
XAHC48FBCN1+ furnace: TM9Y100C16MP11AHRI reference: 210343763 | 15.20 | 8.10 | 18400 | 2.02 | EPA 3984573 → |
XAFC48FXXN1+TXV+ furnace: TM9Y100C16MP11AHRI reference: 210343769 | 15.20 | 7.80 | 19600 | 2.02 | EPA 3984578 → |
XAFC48FBCN1+ furnace: TM9Y100C16MP11AHRI reference: 210343775 | 15.20 | 7.80 | 19600 | 2.02 | EPA 3984580 → |
XAHC48FBCN1+ furnace: TM9Y080C16MP11AHRI reference: 210343793 | 15.20 | 8.10 | 18600 | 2.04 | EPA 3984585 → |
XAHD48FBCN1+ furnace: TM9Y100C20MP11AHRI reference: 210347674 | 15.20 | 8.10 | 20200 | 2.08 | EPA 3984908 → |
XAFC48FXXN1+TXV+ furnace: TM9Y080C16MP11AHRI reference: 210347680 | 15.20 | 7.80 | 19600 | 2.00 | EPA 3984913 → |
XAFC48FBCN1+ furnace: TM9Y080C16MP11AHRI reference: 210347686 | 15.20 | 7.80 | 19600 | 2.00 | EPA 3984917 → |
XAHC48FBCN1+ furnace: TM9Y060B12MP11AHRI reference: 210347704 | 15.20 | 7.80 | 19200 | 2.00 | EPA 3984919 → |
XAFC48FXXN1+TXV+ furnace: TM9V100C16MP12AHRI reference: 210347710 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3984926 → |
XAFC48FXXN1+TXV+ furnace: TP9C100C16MP13AHRI reference: 210347714 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3984928 → |
XAHC48FBCN1+ furnace: TM9Y100C20MP11AHRI reference: 210346659 | 15.20 | 8.10 | 20200 | 2.08 | EPA 3984943 → |
XAFD48FBCN1+ furnace: TM9Y100C16MP11AHRI reference: 210346671 | 15.20 | 7.80 | 19600 | 2.02 | EPA 3984948 → |
XAHD48FBCN1+ furnace: TM9V080C16MP12AHRI reference: 210346727 | 15.20 | 8.10 | 19300 | 2.06 | EPA 3984970 → |
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 →