MARATHERM / AIR-SOURCE HEAT PUMP

N5H8T36*K*AAA*

2-STAGE 18 SEER HP · source records, page 3

145 published source records · source checked Sep 21, 2026

SEER2 range15.2–17BTU/Wh
HSPF2 range7.8–8.5BTU/Wh
Cooling capacity33,800–38,000BTU/h

Each efficiency range summarizes published EPA records for N5H8T36*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 145 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/Wh15.2–17145 / 145
EER2 · BTU/Wh11.7–13145 / 145
HSPF2 · BTU/Wh7.8–8.5145 / 145
Cooling capacity · BTU/h33,800–38,000145 / 145
Heating capacity at 47°F / 8.3°C · BTU/h37,200–39,000145 / 145
Heating capacity at 17°F / −8.3°C · BTU/h23,000–24,200145 / 145
Heating capacity at 5°F / −15°C · BTU/h17,500–19,600145 / 145
COP at 5°F / −15°C1.78–2.48145 / 145
Equipment / loop typeHP - Split System145 / 145
Refrigerant / source-reported GWPR-454B (GWP:470 | Lower GWP)145 / 145
Compressor stagingTwo-stage145 / 145
Connected capabilityNo145 / 145

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
EVD5X48M21A*+ furnace: *95CSU1002122B*AHRI reference: 21562268315.507.80178001.78EPA 3947226
EVD5X48M21A*+ furnace: *96CTN0802120B*AHRI reference: 21562280115.507.80178001.78EPA 3947259
EA*5X37M17A*+ furnace: *80CSU0401712A*AHRI reference: 21563514015.508.10189002.28EPA 3954412
EA*5X37M21A*+ furnace: *80MSU0401712A*AHRI reference: 21563571015.508.10193002.26EPA 3954608
EA*5X37M21A*+ furnace: *80MSU0802120A*AHRI reference: 21563574415.508.10191002.42EPA 3954646
EA*5X37M21A*+ furnace: *80MSU1002120A*AHRI reference: 21563576115.508.10194002.26EPA 3954657
EA*5X37M21A*+ furnace: *80CTL0702120B*AHRI reference: 21563580315.508.10194002.24EPA 3954680
EA*5X37M21A*+ furnace: *80CTL0901716B*AHRI reference: 21563581715.508.10194002.24EPA 3954696
EA*5X37M21A*+ furnace: *80CTL0902120B*AHRI reference: 21563583115.508.10193002.26EPA 3954718
EA*5X37M21A*+ furnace: *80CTL1102120B*AHRI reference: 21563584515.508.10193002.24EPA 3954730
EA*5X37M17A*+ furnace: *80MSU0401712A*AHRI reference: 21563522315.508.10188002.26EPA 3954801
EA*5X37M17A*+ furnace: *80MSU0601716A*AHRI reference: 21563524215.508.10188002.28EPA 3954819
EA*5X37M21A*+ furnace: *97CMN0802120B*AHRI reference: 21563599915.508.10193002.26EPA 3954931
EA*5X37M21A*+ furnace: *97CMN1002122B*AHRI reference: 21563601315.508.10193002.24EPA 3954947
EA*5X37M21A*+ furnace: *95CSU0802120B*AHRI reference: 21563592915.508.10193002.24EPA 3954971
EA*5X37M21A*+ furnace: *95CSU1002122B*AHRI reference: 21563594315.508.10193002.24EPA 3954988
EA*5X37M21A*+ furnace: *95MSU0802120A*AHRI reference: 21563610815.508.10193002.26EPA 3955039
EA*5X37M21A*+ furnace: *95MSU1002120A*AHRI reference: 21563613315.508.10194002.24EPA 3955054
EA*5X37M21A*+ furnace: *96CTN1002122B*AHRI reference: 21563624915.508.10193002.24EPA 3955096
EA*5X42M21A*+ furnace: *80MSU0802120A*AHRI reference: 21563666215.508.10188002.24EPA 3955194

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 →