THF2B42T21
LX SERIES · source records, page 18
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 |
|---|---|---|---|---|---|
XAHD48FBCN1+ furnace: TP9C080C16MP13AHRI reference: 210850646 | 15.20 | 8.10 | 19300 | 2.06 | EPA 3989914 → |
XAHC48FBCN1+ furnace: TM9E080B12MP12AHRI reference: 210850648 | 15.20 | 8.10 | 18900 | 2.02 | EPA 3989915 → |
XAFD48FBCN1+ furnace: TL9E080C16UH11AHRI reference: 210850656 | 15.20 | 7.80 | 19600 | 2.00 | EPA 3989921 → |
XAHC48FBCN1+ furnace: TM9Y100C20MP11AHRI reference: 210845817 | 15.20 | 8.10 | 20200 | 2.08 | EPA 3989928 → |
XAFD48FBCN1+ furnace: TL9E100C20UH11AHRI reference: 210845834 | 15.20 | 7.80 | 19900 | 2.04 | EPA 3989930 → |
XAFC48FXXN1+TXV+ furnace: TL8E100C20UH11AHRI reference: 210846694 | 15.20 | 8.10 | 19600 | 2.02 | EPA 3989944 → |
XAHD48FBCN1+ furnace: TM8V100C16MP12AHRI reference: 210846813 | 15.20 | 8.10 | 20400 | 2.12 | EPA 3989973 → |
XAHC48FBCN1+ furnace: TM9V080C16MP12AHRI reference: 210846808 | 15.20 | 8.10 | 19300 | 2.06 | EPA 3989974 → |
XAFC48FBCN1+ furnace: TM8Y120C20MP11AHRI reference: 210846812 | 15.20 | 8.10 | 19600 | 2.04 | EPA 3989975 → |
XAHC48FBCN1+ furnace: TM8V080B12MP12AHRI reference: 210846814 | 15.20 | 7.80 | 18900 | 2.00 | EPA 3989977 → |
XAFC48FBCN1+ furnace: TM8Y100C20MP11AHRI reference: 210846839 | 15.20 | 8.10 | 19600 | 2.04 | EPA 3989983 → |
XAHC48FBCN1+ furnace: TM9Y060B12MP11AHRI reference: 210846931 | 15.20 | 7.80 | 19200 | 2.00 | EPA 3989999 → |
XAFD48FBCN1+ furnace: TM9E120D20MP12AHRI reference: 210846933 | 15.20 | 8.10 | 19300 | 2.04 | EPA 3990000 → |
XAHC48FBCN1+ furnace: TM9Y100C16MP11AHRI reference: 210847038 | 15.20 | 8.10 | 18400 | 2.02 | EPA 3990026 → |
XAFD48FBCN1+ furnace: TM9V100C20MP12AHRI reference: 210847040 | 15.20 | 7.80 | 19600 | 2.04 | EPA 3990030 → |
XAFD48FBCN1+ furnace: TP9C080C16MP13AHRI reference: 210847981 | 15.20 | 7.80 | 19300 | 2.00 | EPA 3990045 → |
XAFC48FXXN1+TXV+ furnace: TM8Y120C20MP11AHRI reference: 210847985 | 15.20 | 8.10 | 19600 | 2.04 | EPA 3990048 → |
XAFC48FXXN1+TXV+ furnace: TM8Y100C20MP11AHRI reference: 210848011 | 15.20 | 8.10 | 19600 | 2.04 | EPA 3990051 → |
XAHC48FBCN1+ furnace: TM9Y080C16MP11AHRI reference: 210848083 | 15.20 | 8.10 | 18600 | 2.04 | EPA 3990062 → |
XAFC48FXXN1+TXV+ furnace: TP9C100C16MP13AHRI reference: 210851497 | 15.20 | 8.10 | 19500 | 2.06 | EPA 3990081 → |
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 →