MAINLINE / AIR-SOURCE HEAT PUMP

ML12HP230NEXH-O

ML Series

12 published source records · source checked Sep 21, 2026

SEER2 range20–25BTU/Wh
HSPF2 range10–11.6BTU/Wh
Cooling capacity12,000BTU/h

Each efficiency range summarizes published EPA records for ML12HP230NEXH-O. 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 12 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/Wh20–2512 / 12
EER2 · BTU/Wh12–13.212 / 12
HSPF2 · BTU/Wh10–11.612 / 12
Cooling capacity · BTU/h12,00012 / 12
Heating capacity at 47°F / 8.3°C · BTU/h12,000–12,50012 / 12
Heating capacity at 17°F / −8.3°C · BTU/h9,600–12,00012 / 12
Heating capacity at 5°F / −15°C · BTU/h11,300–12,00012 / 12
COP at 5°F / −15°C1.8–212 / 12
Equipment / loop typeHP - Mini or Multi Split12 / 12
Refrigerant / source-reported GWPR-454B (GWP:470 | Lower GWP)12 / 12
Compressor stagingContinuously variable12 / 12
Connected capabilityNo12 / 12

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
ML12HP230CON-I*Cold climate designationAHRI reference: 21760729525.0010.50113001.88EPA 4480009
ML12HP230CON-ICold climate designationAHRI reference: 21586438225.0010.50113001.88EPA 4688110
ML12HP230NEX-I*Cold climate designationAHRI reference: 21760725324.0010.50115001.80EPA 4479967
ML12HP230NEX-ICold climate designationAHRI reference: 21586434024.0010.50115001.80EPA 4688179
ML12HP2301WYCAS-I*Cold climate designationAHRI reference: 21760730123.0010.00115002.00EPA 4480015
ML12HP2301WYCAS-ICold climate designationAHRI reference: 21586438823.0010.00115002.00EPA 4688134
ML12HP230STDCAS-I*Cold climate designationAHRI reference: 21760728322.2011.60115002.00EPA 4479998
ML12HP230STDCAS-ICold climate designationAHRI reference: 21586437022.2011.60115002.00EPA 4688123
ML12HP230LSDUC-I*Cold climate designationAHRI reference: 21760728820.0010.00118001.90EPA 4480002
ML12HP230HSDUC-I*Cold climate designationAHRI reference: 21760729120.0010.60120001.95EPA 4480005
ML12HP230LSDUC-ICold climate designationAHRI reference: 21586437520.0010.00118001.90EPA 4688114
ML12HP230HSDUC-ICold climate designationAHRI reference: 21586437820.0010.60120001.95EPA 4688177

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 →