THF2B42T21
LX SERIES · source records, page 4
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+ furnace: Z8ET100C16LMPS1AHRI reference: 212415966 | 16.00 | 8.10 | 22000 | 2.36 | EPA 2485570 → |
XAFC48FXXN1+TXV+ furnace: Z8ET100C20LMPS1AHRI reference: 212415946 | 16.00 | 8.10 | 21000 | 2.22 | EPA 2485572 → |
XAFD48FBCN1+ furnace: Z8ET100C16LMPS1AHRI reference: 212415986 | 16.00 | 8.10 | 20800 | 2.22 | EPA 2485585 → |
XAHD48FBCN1+ furnace: Z8ES120C20LMPS1AHRI reference: 212478253 | 16.00 | 8.10 | 22200 | 2.34 | EPA 2485619 → |
XAHC48FBCN1+ furnace: Z9ES080C20SMPS1AHRI reference: 212415738 | 16.00 | 8.10 | 22400 | 2.32 | EPA 2485868 → |
XAHC48FBCN1+ furnace: Z8ET080B12LMPS1AHRI reference: 212416056 | 16.00 | 8.10 | 22000 | 2.34 | EPA 2485912 → |
XAHD48FBCN1+ furnace: Z8ES080C20SMPS1AHRI reference: 212416306 | 16.00 | 8.10 | 22200 | 2.36 | EPA 2486165 → |
XAHD48FBCN1+ furnace: Z8ES080C16SMPS1AHRI reference: 212416351 | 16.00 | 8.10 | 22200 | 2.38 | EPA 2486166 → |
XAHC48FBCN1+ furnace: TMLV120C20MP12AHRI reference: 210359102 | 16.00 | 8.10 | 20200 | 2.14 | EPA 2786012 → |
XAHC48FBCN1+ furnace: TPLC100C20MP13AHRI reference: 210359106 | 16.00 | 8.10 | 20200 | 2.14 | EPA 2786054 → |
XAHC48FBCN1+ furnace: TPLC120C20MP13AHRI reference: 210359110 | 16.00 | 8.10 | 20200 | 2.14 | EPA 2786056 → |
XAHC48FBCN1+ furnace: LPLC120C20MP13AHRI reference: 210359115 | 16.00 | 8.10 | 20200 | 2.14 | EPA 2786230 → |
XAHC48FBCN1+ furnace: LPLC100C20MP13AHRI reference: 210359113 | 16.00 | 8.10 | 20200 | 2.14 | EPA 2786757 → |
XAHC48FBCN1+ furnace: TMLV100C16MP12AHRI reference: 210346915 | 16.00 | 8.10 | 20600 | 2.12 | EPA 2786927 → |
XAHC48FBCN1+ furnace: TPLC080C16MP13AHRI reference: 210346919 | 16.00 | 8.10 | 20600 | 2.12 | EPA 2786938 → |
XAHC48FBCN1+ furnace: LPLC100C16MP13AHRI reference: 210346929 | 16.00 | 8.10 | 20600 | 2.12 | EPA 2786940 → |
XAHC48FBCN1+ furnace: TPLC100C16MP13AHRI reference: 210346923 | 16.00 | 8.10 | 20600 | 2.12 | EPA 2786953 → |
XAHC48FBCN1+ furnace: LPLC080C16MP13AHRI reference: 210346927 | 16.00 | 8.10 | 20600 | 2.12 | EPA 2786962 → |
XAHC48FBCN1+ furnace: TMLE080B12MP11AHRI reference: 210347067 | 16.00 | 8.10 | 18600 | 2.02 | EPA 2787422 → |
XAHC48FBCN1+ furnace: TM8E080B12MP11AHRI reference: 210347061 | 16.00 | 8.10 | 18600 | 2.02 | EPA 2787427 → |
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 →