Guardian / AIR-SOURCE HEAT PUMP

XH660E2S11

LX SERIES

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
JHE60D5CH2SS1AHRI reference: 21701673616.008.00300002.20EPA 4014184
CTF60D5CJS1+JME18D2SN1AHRI reference: 21701781116.008.50320002.38EPA 4014264
CTF60D5CJS1+JMET18DS2N1AHRI reference: 21701782516.008.50320002.36EPA 4014283
CTM60D5CJS1+ furnace: RL18130D20MPS1AHRI reference: 21701875716.008.10324002.34EPA 4014339
JHE60C5CH2SS1AHRI reference: 21701877016.008.10314002.28EPA 4014340
CTM60D5CHS1+JME18D2SN1AHRI reference: 21701877216.008.10316002.28EPA 4014341
CTM60D5CJS1+JME18D2SN1AHRI reference: 21701877316.008.50320002.38EPA 4014342
CTF60D5CJS1+ furnace: RL18130D20MPS1AHRI reference: 21701804016.008.50322002.36EPA 4014464
JHE60D5CJ2SS1AHRI reference: 21702262016.008.50320002.38EPA 4015413
JSE60D5CJ2SS1AHRI reference: 21765604916.008.50320002.38EPA 4498140
JHE60D5CH2SS2AHRI reference: 21845724316.008.00300002.20EPA 4639443
JHE60D5CJ2SS2AHRI reference: 21845723716.008.50320002.38EPA 4639449
JHE60C5CH2SS2AHRI reference: 21845723116.008.10314002.28EPA 4639455
CTM60D5CJS2+ furnace: RL18130D20MPS1AHRI reference: 21852907316.008.10324002.34EPA 4647049
CTF60D5CJS2+ furnace: RL18130D20MPS1AHRI reference: 21852882516.008.50322002.36EPA 4647285
CTF60D5CJS2+JME18D2SN2AHRI reference: 21863837716.008.50320002.36EPA 4664298
CTM60D5CHS1+JMET18DS2N1AHRI reference: 21701876915.208.10312002.30EPA 4571493
CTM60C5CHS1+JMET16CS2N1AHRI reference: 21701876715.208.10314002.28EPA 4571494
CTM60C5CHS1+JME16C2SN1AHRI reference: 21701876615.208.10312002.30EPA 4571495
CTM60D5CJS1+JMET18DS2N1AHRI reference: 21701876515.208.50320002.36EPA 4571496

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 →