THF2B42T21
LX SERIES · source records, page 15
419 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 419 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 | 419 / 419 |
| EER2 · BTU/Wh | 11.7–12 | 419 / 419 |
| HSPF2 · BTU/Wh | 7.8–8.1 | 419 / 419 |
| Cooling capacity · BTU/h | 39,500–42,000 | 419 / 419 |
| Heating capacity at 47°F / 8.3°C · BTU/h | 37,400–41,000 | 419 / 419 |
| Heating capacity at 17°F / −8.3°C · BTU/h | 24,200–26,600 | 419 / 419 |
| Heating capacity at 5°F / −15°C · BTU/h | 18,400–22,600 | 419 / 419 |
| COP at 5°F / −15°C | 1.98–2.42 | 419 / 419 |
| Equipment / loop type | HP - Split System | 419 / 419 |
| Refrigerant / source-reported GWP | R-410A (GWP:2088) | 419 / 419 |
| Compressor staging | Two-stage | 419 / 419 |
| Connected capability | No | 419 / 419 |
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: TM8Y080C16MP11AHRI reference: 210846605 | 15.20 | 8.10 | 19200 | 2.04 | EPA 3989190 → |
XAHD48FBCN1+ furnace: TM9Y100C16MP11AHRI reference: 210846682 | 15.20 | 8.10 | 19600 | 2.08 | EPA 3989206 → |
XAFC48FBCN1+ furnace: TM9V080C16MP12AHRI reference: 210846685 | 15.20 | 7.80 | 19300 | 2.00 | EPA 3989209 → |
XAHC48FBCN1+ furnace: TM9V060B12MP12AHRI reference: 210851239 | 15.20 | 8.10 | 18900 | 2.00 | EPA 3989218 → |
XAFC48FXXN1+TXV+ furnace: TP9C100C20MP13AHRI reference: 210851388 | 15.20 | 7.80 | 19800 | 2.02 | EPA 3989256 → |
XAHC48FBCN1+ furnace: TM9E100C20MP12AHRI reference: 210851389 | 15.20 | 8.10 | 19800 | 2.12 | EPA 3989257 → |
XAFC48FBCN1+ furnace: TM8V100C16MP12AHRI reference: 210851392 | 15.20 | 8.10 | 19200 | 2.02 | EPA 3989258 → |
XAFC48FXXN1+TXV+ furnace: TM8Y100C16MP11AHRI reference: 210851414 | 15.20 | 8.10 | 19200 | 2.04 | EPA 3989261 → |
XAHC48FBCN1+ furnace: TP9C060B12MP13AHRI reference: 210850328 | 15.20 | 8.10 | 18900 | 2.00 | EPA 3989268 → |
XAFC48FXXN1+TXV+ furnace: TM9E080C20MP12AHRI reference: 210850329 | 15.20 | 8.10 | 19600 | 2.04 | EPA 3989269 → |
XAFC48FBCN1+ furnace: TM8Y100C16MP11AHRI reference: 210850373 | 15.20 | 8.10 | 19200 | 2.04 | EPA 3989278 → |
XAFC48FBCN1+ furnace: TM8Y080C16MP11AHRI reference: 210845278 | 15.20 | 8.10 | 19200 | 2.04 | EPA 3989345 → |
XAFC48FXXN1+TXV+ furnace: TM9V100C20MP12AHRI reference: 210845275 | 15.20 | 7.80 | 19800 | 2.02 | EPA 3989346 → |
XAFD48FBCN1+ furnace: TM8V080C16MP12AHRI reference: 210848786 | 15.20 | 7.80 | 19800 | 2.02 | EPA 3989352 → |
XAFD48FBCN1+ furnace: TM9E080C20MP12AHRI reference: 210845361 | 15.20 | 8.10 | 19600 | 2.04 | EPA 3989358 → |
XAFC48FBCN1+ furnace: TL8E100C20UH11AHRI reference: 210845370 | 15.20 | 8.10 | 19600 | 2.02 | EPA 3989360 → |
XAFD48FBCN1+ furnace: TM9Y120D20MP11AHRI reference: 210848778 | 15.20 | 7.80 | 19600 | 2.02 | EPA 3989388 → |
XAFC48FXXN1+TXV+ furnace: TM9V080C16MP12AHRI reference: 210848781 | 15.20 | 7.80 | 19300 | 2.00 | EPA 3989392 → |
XAHD48FBCN1+ furnace: TM9E120D20MP12AHRI reference: 210848176 | 15.20 | 8.10 | 21000 | 2.14 | EPA 3989399 → |
XAHC48FBCN1+ furnace: TM9E060B12MP12AHRI reference: 210848177 | 15.20 | 7.80 | 18900 | 1.98 | EPA 3989400 → |
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 →