THF2B42T21
LX SERIES · source records, page 19
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 |
|---|---|---|---|---|---|
XAFC48FBCN1+ furnace: TM8V100C16MP12AHRI reference: 210344877 | 15.20 | 8.10 | 19200 | 2.02 | EPA 3986036 → |
XAFC48FBCN1+ furnace: TM8V080C16MP12AHRI reference: 210344885 | 15.20 | 8.10 | 19200 | 2.02 | EPA 3986042 → |
XAHD48FBCN1+ furnace: TM9E120D20MP12AHRI reference: 210346773 | 15.20 | 8.10 | 21000 | 2.14 | EPA 3986323 → |
XAHC48FBCN1+ furnace: TM9E080B12MP12AHRI reference: 210346797 | 15.20 | 8.10 | 18900 | 2.02 | EPA 3986325 → |
XAHC48FBCN1+ furnace: TM9E060B12MP12AHRI reference: 210346809 | 15.20 | 7.80 | 18900 | 1.98 | EPA 3986331 → |
XAFC48FXXN1+TXV+ furnace: TM8Y100C16MP11AHRI reference: 210346859 | 15.20 | 8.10 | 19200 | 2.04 | EPA 3986335 → |
XAFC48FBCN1+ furnace: TM8Y100C16MP11AHRI reference: 210346867 | 15.20 | 8.10 | 19200 | 2.04 | EPA 3986338 → |
XAFD48FBCN1+ furnace: TL9E100C20UH11AHRI reference: 210347083 | 15.20 | 7.80 | 19900 | 2.04 | EPA 3986363 → |
XAFC48FXXN1+TXV+ furnace: TL8E080C16UH11AHRI reference: 210347095 | 15.20 | 8.10 | 19300 | 2.02 | EPA 3986369 → |
XAFD48FBCN1+ furnace: TL9E080C16UH11AHRI reference: 210347091 | 15.20 | 7.80 | 19600 | 2.00 | EPA 3986371 → |
XAFC48FBCN1+ furnace: TL8E080C16UH11AHRI reference: 210347099 | 15.20 | 8.10 | 19300 | 2.02 | EPA 3986375 → |
XAFD48FBCN1+ furnace: TM8V080C16MP12AHRI reference: 210359145 | 15.20 | 7.80 | 19800 | 2.02 | EPA 3986564 → |
XAFD48FBCN1+ furnace: TM8V100C16MP12AHRI reference: 210359141 | 15.20 | 7.80 | 19800 | 2.02 | EPA 3986566 → |
XAHC48FBCN1+ furnace: TL9E060B12UH11AHRI reference: 210359257 | 15.20 | 7.80 | 18900 | 2.00 | EPA 3986600 → |
XAFC48FXXN1+TXV+ furnace: TL8E100C20UH11AHRI reference: 210359269 | 15.20 | 8.10 | 19600 | 2.02 | EPA 3986606 → |
XAFC48FBCN1+ furnace: TL8E100C20UH11AHRI reference: 210359273 | 15.20 | 8.10 | 19600 | 2.02 | EPA 3986612 → |
XAFD48FBCN1+ furnace: TM9Y120D20MP11AHRI reference: 210350247 | 15.20 | 7.80 | 19600 | 2.02 | EPA 3987050 → |
XAHD48FBCN1+ furnace: TM9Y100C16MP11AHRI reference: 210350271 | 15.20 | 8.10 | 19600 | 2.08 | EPA 3987053 → |
XAFD48FBCN1+ furnace: TM9Y080C16MP11AHRI reference: 210350283 | 15.20 | 7.80 | 19600 | 2.02 | EPA 3987057 → |
XAFD48FBCN1+ furnace: TM9V100C16MP12AHRI reference: 210350349 | 15.20 | 8.10 | 19300 | 2.04 | EPA 3987076 → |
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 →