THF2B42T21
LX SERIES · source records, page 7
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 |
|---|---|---|---|---|---|
JHETC42FBCS2N1AHRI reference: 210803162 | 16.00 | 8.10 | 21200 | 2.32 | EPA 3989539 → |
XAHD48FBCN1+ furnace: TM9V100C16MP12AHRI reference: 210849350 | 16.00 | 8.10 | 19600 | 2.12 | EPA 3989582 → |
XAHC48FBCN1+ furnace: TM9E080C16MP12AHRI reference: 210850118 | 16.00 | 8.10 | 20800 | 2.10 | EPA 3989614 → |
XAHD48FBCN1+JMET18DS2N1AHRI reference: 210847655 | 16.00 | 8.10 | 20600 | 2.20 | EPA 3989648 → |
XAHD48FBCN1+ furnace: TP9C120D20MP13AHRI reference: 210847727 | 16.00 | 8.10 | 19900 | 2.14 | EPA 3989659 → |
XAHC48FBCN1+ furnace: TM8V120C20MP12AHRI reference: 210847731 | 16.00 | 8.10 | 20200 | 2.14 | EPA 3989660 → |
XAHC48FBCN1+ furnace: TL8E100C20UH11AHRI reference: 210847738 | 16.00 | 8.10 | 20400 | 2.14 | EPA 3989663 → |
XAHD48FBCN1+ furnace: TM9V100C20MP12AHRI reference: 210848904 | 16.00 | 8.10 | 20200 | 2.12 | EPA 3989720 → |
XAHD48FBCN1+ furnace: TM9Y120D20MP11AHRI reference: 210848903 | 16.00 | 8.10 | 20400 | 2.12 | EPA 3989721 → |
XAHC48FBCN1+JMVT16CC2N1AHRI reference: 210845615 | 16.00 | 8.10 | 19600 | 2.18 | EPA 3989858 → |
XAHD48FBCN1+ furnace: TL8E100C20UH11AHRI reference: 210845724 | 16.00 | 8.10 | 20400 | 2.14 | EPA 3989883 → |
XAHC48FBCN1+JMVT17CC2N1AHRI reference: 210845725 | 16.00 | 8.10 | 19600 | 2.18 | EPA 3989886 → |
XAHC48FBCN1+ furnace: TP9C100C20MP13AHRI reference: 210845818 | 16.00 | 8.10 | 20200 | 2.12 | EPA 3989925 → |
XAHC48FBCN1+ furnace: TM8V100C16MP12AHRI reference: 210845827 | 16.00 | 8.10 | 20600 | 2.12 | EPA 3989926 → |
XAHC48FBCN1+JMET16CS2N1AHRI reference: 210845836 | 16.00 | 8.10 | 21000 | 2.20 | EPA 3989931 → |
XAFD48FBCN1+JMVT20DC2N1AHRI reference: 210846695 | 16.00 | 8.10 | 19200 | 2.10 | EPA 3989945 → |
XAFC48FBCN1+JMET12CS2N1AHRI reference: 210846696 | 16.00 | 8.10 | 19200 | 2.06 | EPA 3989947 → |
XAHC48FBCN1+JMET12CS2N1AHRI reference: 210846940 | 16.00 | 8.10 | 19500 | 2.16 | EPA 3990001 → |
XAHD48FBCN1+ furnace: TP9C100C20MP13AHRI reference: 210847979 | 16.00 | 8.10 | 20200 | 2.12 | EPA 3990044 → |
XAFC48FBCN1+JMVT17CC2N1AHRI reference: 210847991 | 16.00 | 8.10 | 19300 | 2.08 | EPA 3990047 → |
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 →