Guardian / AIR-SOURCE HEAT PUMP

XH660E2S11

LX SERIES · source records, page 3

81 published source records · source checked Sep 21, 2026

SEER2 range15.2–16BTU/Wh
HSPF2 range7.8–8.5BTU/Wh
Cooling capacity52,500–54,500BTU/h

Each efficiency range summarizes published EPA records for XH660E2S11. 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 81 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/Wh15.2–1681 / 81
EER2 · BTU/Wh11–1281 / 81
HSPF2 · BTU/Wh7.8–8.581 / 81
Cooling capacity · BTU/h52,500–54,50081 / 81
Heating capacity at 47°F / 8.3°C · BTU/h56,500–60,00081 / 81
Heating capacity at 17°F / −8.3°C · BTU/h37,800–39,50081 / 81
Heating capacity at 5°F / −15°C · BTU/h30,000–32,60081 / 81
COP at 5°F / −15°C2.2–2.3881 / 81
Equipment / loop typeHP - Split System81 / 81
Refrigerant / source-reported GWPR-454B (GWP:470 | Lower GWP)81 / 81
Compressor stagingTwo-stage81 / 81
Connected capabilityNo81 / 81

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
CTU60D5XHS1+TXV+ furnace: RL18130D20MPS1AHRI reference: 21701791715.208.10314002.28EPA 4571874
CTF60C5CHS1+ furnace: RL18120C20MPS1AHRI reference: 21701789215.208.10316002.26EPA 4571894
CTF60D5CHS1+JMET18DS2N1AHRI reference: 21701785315.208.10312002.30EPA 4571924
CTF60C5CHS1+ furnace: RG19080C20MPS1AHRI reference: 21701785015.208.10320002.22EPA 4571926
CTF60C5CHS1+ furnace: RG19080C16MPS1AHRI reference: 21701784115.208.00318002.24EPA 4571932
CTF60C5CHS1+JMET16CS2N1AHRI reference: 21701782815.208.10314002.28EPA 4571943
CTF60C5CHS1+ furnace: RL18120C16MPS1AHRI reference: 21701782115.208.10314002.26EPA 4571948
CTF60C5CHS1+ furnace: RL18100C20MPS1AHRI reference: 21701781615.208.10312002.28EPA 4571950
CTF60C5CHS1+ furnace: RG19100C16MPS1AHRI reference: 21701780515.208.10316002.26EPA 4571960
CTU60D5XHS1+JMET18DS2N1+TXVAHRI reference: 21701780315.208.10312002.30EPA 4571962
CTF60D5CHS1+JME18D2SN1AHRI reference: 21701777715.208.10312002.30EPA 4571982
CTF60D5CJS1+ furnace: RG19120D20MPS1AHRI reference: 21701777315.208.10324002.32EPA 4571985
CTM60D5CJS2+ furnace: RG19120D20MPS1AHRI reference: 21852908315.208.50326002.32EPA 4647039
CTM60D5CHS2+ furnace: RG19120D20MPS1AHRI reference: 21852902915.208.10316002.26EPA 4647087
CTM60D5CHS2+ furnace: RL18130D20MPS1AHRI reference: 21852901915.208.10314002.28EPA 4647097
CTM60C5CHS2+ furnace: RL18120C20MPS1AHRI reference: 21852894915.208.10316002.26EPA 4647167
CTM60C5CHS2+ furnace: RL18100C16MPS1AHRI reference: 21852893915.208.10316002.26EPA 4647177
CTM60C5CHS2+ furnace: RG19100C16MPS1AHRI reference: 21852892515.208.10316002.26EPA 4647191
CTM60C5CHS2+ furnace: RL18080C20MPS1AHRI reference: 21852891515.208.10316002.26EPA 4647201
CTM60C5CHS2+ furnace: RG19100C20MPS1AHRI reference: 21852889315.208.10320002.24EPA 4647223

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 →