MARATHERM / AIR-SOURCE HEAT PUMP

N5H8T48*K*AAA*

2-STAGE 18 SEER HP

243 published source records · source checked Sep 21, 2026

SEER2 range15.2–18BTU/Wh
HSPF2 range7.8–8.5BTU/Wh
Cooling capacity45,500–50,500BTU/h

Each efficiency range summarizes published EPA records for N5H8T48*K*AAA*. 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 243 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 fieldValue / rangeRecords supplying it
SEER2 · BTU/Wh15.2–18243 / 243
EER2 · BTU/Wh11.7–13.5243 / 243
HSPF2 · BTU/Wh7.8–8.5243 / 243
Cooling capacity · BTU/h45,500–50,500243 / 243
Heating capacity at 47°F / 8.3°C · BTU/h48,500–52,500243 / 243
Heating capacity at 17°F / −8.3°C · BTU/h30,000–32,600243 / 243
Heating capacity at 5°F / −15°C · BTU/h23,800–26,600243 / 243
COP at 5°F / −15°C2.06–2.32243 / 243
Equipment / loop typeHP - Split System243 / 243
Refrigerant / source-reported GWPR-454B (GWP:470 | Lower GWP)243 / 243
Compressor stagingTwo-stage243 / 243
Connected capabilityNo243 / 243

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 furnaceSEER2BTU/WhHSPF2BTU/WhHeating capacity at 5°F / −15°CBTU/hCOP at 5°F / −15°CRecord & comparison
FTMA5B60L0D*AHRI reference: 21556072618.008.10246002.32EPA 3982815
QFVA5D6021X*AHRI reference: 21869545218.008.50258002.32EPA 4683375
EVM5X49M21A*+ furnace: *80MSU0802120A*AHRI reference: 21562332317.508.10244002.14EPA 3947647
EVM5X60M21A*+ furnace: *80MSU0802120A*AHRI reference: 21562372117.508.10244002.14EPA 3948280
EVD5X49M24A*+ furnace: *80MSU0802120A*AHRI reference: 21562447917.508.10246002.14EPA 3948719
EVD5X61M21A*+ furnace: *80MSU0601716A*AHRI reference: 21562505117.508.10250002.12EPA 3949262
EVD5X61M21A*+ furnace: *80MSU0802120A*AHRI reference: 21562507017.508.50244002.30EPA 3949283
EVD5X61M21A*+ furnace: *80MSU1002120A*AHRI reference: 21562508917.508.50250002.26EPA 3949301
EVD5X61M21A*+ furnace: *80CTL0902120B*AHRI reference: 21562511917.508.50252002.24EPA 3949330
EVD5X61M21A*+ furnace: *80CTL1102120B*AHRI reference: 21562513317.508.50250002.24EPA 3949344
EVD5X61M21A*+ furnace: *95MSU1002122A*AHRI reference: 21562530117.508.10244002.16EPA 3949600
EVD5X61M24A*+ furnace: *80CTL1352422B*AHRI reference: 21562547817.508.50248002.28EPA 3949813
EVD5X61M24A*+ furnace: *95MSU1002122A*AHRI reference: 21562566717.508.50250002.26EPA 3949997
EVD5X61M21A*+ furnace: *80CSU0802120B*AHRI reference: 21572231917.508.00248002.26EPA 3982531
EVD5X61M24A*+ furnace: *80CSU0802120B*AHRI reference: 21572242217.508.00246002.28EPA 3982632
QFVA5D4821X*AHRI reference: 21869543517.508.10254002.18EPA 4683392
EVM5X48M21A*+ furnace: *80MSU0802120A*AHRI reference: 21562296617.008.10240002.14EPA 3947368
EVM5X49M21A*+ furnace: *80MSU0601716A*AHRI reference: 21562330417.008.10250002.12EPA 3947629
EVM5X49M21A*+ furnace: *80MSU1002120A*AHRI reference: 21562334217.008.10248002.10EPA 3947665
EVM5X49M21A*+ furnace: *80CTL0902120B*AHRI reference: 21562337217.008.10252002.10EPA 3947694

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 →