Day & Night / AIR-SOURCE HEAT PUMP

C5H6S31*K*AAA*

MAINLINE 16 SEER2 HP

38 published source records · source checked Sep 21, 2026

SEER2 range15.2–16BTU/Wh
HSPF2 range7.8–8BTU/Wh
Cooling capacity27,400–29,400BTU/h

Each efficiency range summarizes published EPA records for C5H6S31*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 38 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/Wh15.2–1638 / 38
EER2 · BTU/Wh11.7–1338 / 38
HSPF2 · BTU/Wh7.8–838 / 38
Cooling capacity · BTU/h27,400–29,40038 / 38
Heating capacity at 47°F / 8.3°C · BTU/h29,200–30,60038 / 38
Heating capacity at 17°F / −8.3°C · BTU/h17,300–18,20038 / 38
Heating capacity at 5°F / −15°C · BTU/h13,100–14,00038 / 38
COP at 5°F / −15°C2–2.0638 / 38
Equipment / loop typeHP - Split System38 / 38
Refrigerant / source-reported GWPR-454B (GWP:470 | Lower GWP)38 / 38
Compressor stagingSingle stage38 / 38
Connected capabilityNo38 / 38

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
FHMA5*42L*C*AHRI reference: 21772145416.008.00134002.05EPA 4509417
F5MA5*42L*C*AHRI reference: 21772145516.008.00134002.05EPA 4509418
FM(C,U)5Z30**AL*AHRI reference: 21772147916.008.00134002.00EPA 4509429
FM(C,U)5Z36**AL*AHRI reference: 21772148616.008.00134002.00EPA 4509435
FMA5X30**AL*AHRI reference: 21772150716.008.00137002.00EPA 4509449
FMA5X36**AL*AHRI reference: 21772151416.008.00137002.00EPA 4509487
FHMA5*30L*B*AHRI reference: 21768731215.507.80134002.00EPA 4506513
EA*5X37M21A*+ furnace: *80MSU0601716A*AHRI reference: 21771731715.508.00140002.06EPA 4508970
EA*5X37M21A*+ furnace: *80MSU0802120A*AHRI reference: 21771732515.508.00140002.04EPA 4508978
EA*5X37M21A*+ furnace: *80MS(N,L)0902120A*AHRI reference: 21771726115.508.00140002.06EPA 4508987
EA*5X37M21A*+ furnace: *80MS(N,L)1102120A*AHRI reference: 21771726915.508.00140002.06EPA 4508994
EA*5X37M21A*+ furnace: *80VSL1102122B*AHRI reference: 21771730115.508.00140002.06EPA 4509002
EA*5X37M21A*+WALLCON+ furnace: *80CSU0401712B*AHRI reference: 21771718915.508.00139002.06EPA 4509010
EA*5X37M21A*+ furnace: *92MSN0802120A*AHRI reference: 21771749315.508.00140002.06EPA 4509016
EA*5X37M21A*+ furnace: *92MSN1002120A*AHRI reference: 21771750115.508.00140002.06EPA 4509024
EA*5X37M21A*+ furnace: *92MSN1002122A*AHRI reference: 21771750915.508.00140002.06EPA 4509032
EA*5X37M21A*+WALLCON+ furnace: *80CSU0802120B*AHRI reference: 21771720515.508.00140002.06EPA 4509043
EA*5X37M21A*+ furnace: *95MSU1002122A*AHRI reference: 21771765115.508.00140002.06EPA 4509051
EA*5X37M21A*+ furnace: *96VTN1002122B*AHRI reference: 21771774715.508.00140002.06EPA 4509166
EA*5X37M21A*+ furnace: *97VTN1002122A*AHRI reference: 21771778715.508.00140002.06EPA 4509238

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 →