MARATHERM / AIR-SOURCE HEAT PUMP

N5H8T24*K*AAA*

2-STAGE 18 SEER HP

266 published source records · source checked Sep 21, 2026

SEER2 range15.2–18.5BTU/Wh
HSPF2 range7.8–8.5BTU/Wh
Cooling capacity22,200–25,000BTU/h

Each efficiency range summarizes published EPA records for N5H8T24*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 266 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/Wh15.2–18.5266 / 266
EER2 · BTU/Wh11.5–14266 / 266
HSPF2 · BTU/Wh7.8–8.5266 / 266
Cooling capacity · BTU/h22,200–25,000266 / 266
Heating capacity at 47°F / 8.3°C · BTU/h24,200–25,400266 / 266
Heating capacity at 17°F / −8.3°C · BTU/h14,200–15,000266 / 266
Heating capacity at 5°F / −15°C · BTU/h10,700–11,500266 / 266
COP at 5°F / −15°C1.94–2.24266 / 266
Equipment / loop typeHP - Split System266 / 266
Refrigerant / source-reported GWPR-454B (GWP:470 | Lower GWP)266 / 266
Compressor stagingTwo-stage266 / 266
Connected capabilityNo266 / 266

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
EVD5X38M17A*+ furnace: *80CSU0401712A*AHRI reference: 21561861818.507.80110001.98EPA 3946080
EVM5X32M17A*+ furnace: *80CSU0401712A*AHRI reference: 21561435618.507.80110001.98EPA 3946155
EVM5X32M17A*+ furnace: *80MSU0401712A*AHRI reference: 21561442518.507.80108002.00EPA 3946297
EVD5X37M21A*+ furnace: *80MSU1002120A*AHRI reference: 21561797418.007.80109001.98EPA 3945961
EVD5X37M21A*+ furnace: *80CTL0901716B*AHRI reference: 21561803218.007.80108001.98EPA 3945980
EVM5X31M17A*+ furnace: *95CSU0601716B*AHRI reference: 21561403518.007.80110001.98EPA 3946012
EVD5X37M21A*+ furnace: *97CMN0802120B*AHRI reference: 21561821818.007.80108002.00EPA 3946016
EVD5X37M21A*+ furnace: *97CMN1002122B*AHRI reference: 21561823218.007.80108002.00EPA 3946032
EVD5X37M21A*+ furnace: *96CTN0801714B*AHRI reference: 21561841518.007.80109001.98EPA 3946045
EVM5X32M17A*+ furnace: *96CTN0601714B*AHRI reference: 21561472918.007.80108001.98EPA 3946140
EVD5X38M17A*+ furnace: OMV112K14AAHRI reference: 21561899918.008.00112002.10EPA 3946242
EVD5X31M17A*+ furnace: *96CTN0601714B*AHRI reference: 21561656218.007.80112001.96EPA 3946390
EA*5X25M17A*+ furnace: *80CSU0401712A*AHRI reference: 21564437718.008.50113002.20EPA 3957776
EA*5X25M17A*+ furnace: *80MSU0401712A*AHRI reference: 21564447918.008.10111002.10EPA 3957840
EA*5X25M17A*+ furnace: *80CTL0701412B*AHRI reference: 21564455218.008.10111002.10EPA 3957891
EA*5X37M21A*+ furnace: *80CTL0901716B*AHRI reference: 21564802318.008.10111002.10EPA 3960608
EA*5X37M21A*+ furnace: *80CSU0401712A*AHRI reference: 21564776318.008.50113002.20EPA 3960744
EA*5X37M21A*+ furnace: *80MSU0401712A*AHRI reference: 21564786518.008.50111002.24EPA 3960886
EA*5X37M21A*+ furnace: *80MSU0601716A*AHRI reference: 21564788918.008.50112002.24EPA 3960908
EA*5X37M21A*+ furnace: *80MSU0802120A*AHRI reference: 21564791518.008.50111002.24EPA 3960923

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 →