THF2B42T21
LX SERIES · source records, page 17
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: TP9C080C16MP13AHRI reference: 210847728 | 15.20 | 7.80 | 19300 | 2.00 | EPA 3989661 → |
XAHD48FBCN1+ furnace: TM9E080C20MP12AHRI reference: 210847729 | 15.20 | 8.10 | 19800 | 2.12 | EPA 3989662 → |
XAFC48FBCN1+ furnace: TP9C100C16MP13AHRI reference: 210847847 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3989690 → |
XAFC48FBCN1+ furnace: TM9E080C20MP12AHRI reference: 210848908 | 15.20 | 8.10 | 19600 | 2.04 | EPA 3989723 → |
XAFD48FBCN1+ furnace: TM9V080C16MP12AHRI reference: 210848906 | 15.20 | 7.80 | 19300 | 2.00 | EPA 3989724 → |
XAFC48FBCN1+ furnace: TM9E100C20MP12AHRI reference: 210849057 | 15.20 | 8.10 | 19600 | 2.04 | EPA 3989749 → |
XAFC48FXXN1+TXV+ furnace: TM8V080C16MP12AHRI reference: 210849059 | 15.20 | 8.10 | 19200 | 2.02 | EPA 3989750 → |
XAFC48FBCN1+ furnace: TM8V080C16MP12AHRI reference: 210849060 | 15.20 | 8.10 | 19200 | 2.02 | EPA 3989753 → |
XAHC48FBCN1+ furnace: TP9C080B12MP13AHRI reference: 210849162 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3989767 → |
XAFD48FBCN1+ furnace: TM9E100C20MP12AHRI reference: 210849163 | 15.20 | 8.10 | 19600 | 2.04 | EPA 3989768 → |
XAFD48FBCN1+ furnace: TM9Y080C16MP11AHRI reference: 210851111 | 15.20 | 7.80 | 19600 | 2.02 | EPA 3989794 → |
XAFD48FBCN1+ furnace: TM9V100C16MP12AHRI reference: 210851113 | 15.20 | 8.10 | 19300 | 2.04 | EPA 3989795 → |
XAFC48FBCN1+ furnace: TP9C080C16MP13AHRI reference: 210851114 | 15.20 | 7.80 | 19300 | 2.00 | EPA 3989796 → |
XAHC48FBCN1+ furnace: TP9C080C16MP13AHRI reference: 210845483 | 15.20 | 8.10 | 19300 | 2.06 | EPA 3989828 → |
XAFD48FBCN1+ furnace: TL8E080C16UH11AHRI reference: 210845492 | 15.20 | 8.10 | 19300 | 2.02 | EPA 3989834 → |
XAHD48FBCN1+ furnace: TM9Y100C20MP11AHRI reference: 210845605 | 15.20 | 8.10 | 20200 | 2.08 | EPA 3989856 → |
XAFC48FXXN1+TXV+ furnace: TM9V100C16MP12AHRI reference: 210845606 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3989857 → |
XAFD48FBCN1+ furnace: TP9C100C20MP13AHRI reference: 210845716 | 15.20 | 7.80 | 19600 | 2.04 | EPA 3989880 → |
XAFC48FXXN1+TXV+ furnace: TM9Y100C16MP11AHRI reference: 210845713 | 15.20 | 7.80 | 19600 | 2.02 | EPA 3989881 → |
XAFD48FBCN1+ furnace: TM9Y100C16MP11AHRI reference: 210850644 | 15.20 | 7.80 | 19600 | 2.02 | EPA 3989912 → |
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 →