YH2F42TB21
LX SERIES · source records, page 11
449 published source records · source checked Sep 21, 2026
Each efficiency range summarizes published EPA records for YH2F42TB21. 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 449 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 | 449 / 449 |
| EER2 · BTU/Wh | 11.7–12 | 449 / 449 |
| HSPF2 · BTU/Wh | 7.8–8.1 | 449 / 449 |
| Cooling capacity · BTU/h | 39,500–42,000 | 449 / 449 |
| Heating capacity at 47°F / 8.3°C · BTU/h | 37,400–41,000 | 449 / 449 |
| Heating capacity at 17°F / −8.3°C · BTU/h | 24,200–26,600 | 449 / 449 |
| Heating capacity at 5°F / −15°C · BTU/h | 18,400–22,600 | 449 / 449 |
| COP at 5°F / −15°C | 1.98–2.42 | 449 / 449 |
| Equipment / loop type | HP - Split System | 449 / 449 |
| Refrigerant / source-reported GWP | R-410A (GWP:2088) | 449 / 449 |
| Compressor staging | Two-stage | 449 / 449 |
| Connected capability | No | 449 / 449 |
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 |
|---|---|---|---|---|---|
XAFC48FBCN1+ furnace: Y81E100B12LMPS1AHRI reference: 212475725 | 15.20 | 7.80 | 21200 | 2.20 | EPA 2477520 → |
XAFC48FXXN1+TXV+ furnace: Y81E080B12LMPS1AHRI reference: 212475943 | 15.20 | 8.10 | 20800 | 2.20 | EPA 2479122 → |
XAFC48FBCN1+ furnace: Y81E100C16LMPS1AHRI reference: 212475933 | 15.20 | 8.10 | 21000 | 2.22 | EPA 2479599 → |
XAFD48FBCN1+ furnace: Y81E120C20LMPS1AHRI reference: 212476101 | 15.20 | 8.10 | 21200 | 2.20 | EPA 2479613 → |
XAFC48FBCN1+ furnace: Y81E120C20LMPS1AHRI reference: 212475923 | 15.20 | 7.80 | 21200 | 2.20 | EPA 2479955 → |
XAFC48FXXN1+TXV+ furnace: Y81E100C16LMPS1AHRI reference: 212475931 | 15.20 | 8.10 | 21000 | 2.22 | EPA 2479973 → |
XAFC48FBCN1+ furnace: Y81E100C20LMPS1AHRI reference: 212475718 | 15.20 | 8.10 | 21000 | 2.22 | EPA 2480341 → |
XAHC48FBCN1+ furnace: Y82E100C16LMPS1AHRI reference: 212413404 | 15.20 | 7.80 | 21800 | 2.36 | EPA 2481726 → |
XAFC48FXXN1+TXV+ furnace: Y82E100C16LMPS1AHRI reference: 212413407 | 15.20 | 8.10 | 20800 | 2.22 | EPA 2481727 → |
XAFC48FBCN1+ furnace: Y82E100C16LMPS1AHRI reference: 212413408 | 15.20 | 7.80 | 20600 | 2.18 | EPA 2481731 → |
XAFC48FBCN1+ furnace: Y81E080B12SMPS1AHRI reference: 212413490 | 15.20 | 8.10 | 20800 | 2.20 | EPA 2481758 → |
XAFC48FXXN1+TXV+ furnace: Y81E080B12SMPS1AHRI reference: 212413489 | 15.20 | 8.10 | 20800 | 2.20 | EPA 2481762 → |
XAFD48FBCN1+ furnace: Y81E120C16LMPS1AHRI reference: 212475032 | 15.20 | 8.10 | 21000 | 2.24 | EPA 2483210 → |
XAFC48FXXN1+TXV+ furnace: Y82E080B12LMPS1AHRI reference: 212413421 | 15.20 | 8.10 | 20800 | 2.20 | EPA 2483442 → |
XAFC48FBCN1+ furnace: Y82E080B12LMPS1AHRI reference: 212413422 | 15.20 | 8.10 | 20800 | 2.20 | EPA 2483443 → |
XAFC48FBCN1+ furnace: Y81E120C20SMPS1AHRI reference: 212413435 | 15.20 | 7.80 | 21200 | 2.20 | EPA 2483445 → |
XAFC48FXXN1+TXV+ furnace: Y81E120C20SMPS1AHRI reference: 212413434 | 15.20 | 7.80 | 21200 | 2.20 | EPA 2483450 → |
XAFD48FBCN1+ furnace: Y81E120C20SMPS1AHRI reference: 212413433 | 15.20 | 8.10 | 21200 | 2.20 | EPA 2483451 → |
XAFD48FBCN1+ furnace: Y81E120C16SMPS1AHRI reference: 212413442 | 15.20 | 8.10 | 21000 | 2.24 | EPA 2483457 → |
XAFC48FBCN1+ furnace: Y81E100C20SMPS1AHRI reference: 212413453 | 15.20 | 8.10 | 21000 | 2.22 | EPA 2483462 → |
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 →