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Heat pump condensing unit

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Lennox Heat pump condensing unit EL21KLV-048-230A**

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Lennox Lennox AHRI Outdoor - EL21KLV Variable-Speed Heat Pump Heat pump condensing unit Repair, maintenance, and replacement planning
Lennox EL21KLV-048-230A** product image

Technical Specifications

Product Specs

  • AHRI unit role: Outdoor
  • AHRI model/pattern: EL21KLV-048-230A**
  • AHRI records represented: 275
  • AHRI equipment type: Central HP
  • AHRI tonnage: 4
  • AHRI refrigerant: R-454B
  • Verified catalog model: EL21KLV-048-230A**
  • Verified product family: EL21KLV Variable-Speed Heat Pump
  • Verified catalog brand: Lennox
  • Verified model family: EL21KLV
  • AHRI model/pattern: EL21KLV-048-230A**
  • Nominal capacity: 4 ton
  • Nominal cooling capacity: 48,000 BTU nominal cooling capacity
  • Cooling efficiency: up to 20.5 SEER2
  • Heating efficiency: up to 10 HSPF2
  • Operation: variable-capacity
  • Refrigerant: R-454B
  • Sound rating: low sound levels with sound-dampening system
  • Warranty: 10-year limited compressor warranty and 5-year limited covered components warranty; extended coverage may be available with product registration
  • Official product page: https://www.lennox.com/residential/products/heating-cooling/heat-pumps/el21klv

Useful troubleshooting details

  • Confirm the installed model and serial number, matched indoor or outdoor equipment, voltage, refrigerant, controls, and AHRI certificate before service or replacement planning.
  • Use the linked AHRI certificates to verify matched-system combinations, rebate conversations, and equipment eligibility before quoting replacement work.
  • Collect photos of the nameplate, equipment access, recent fault history, and comfort symptoms before dispatch or proposal planning.

Certification match

AHRI certificates

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Eligible Central HP <5.4 tons

AHRI 217117001

AHRI 217117001 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL21KLV-048-230A** and indoor unit CBK48MVT-060-230-**.
Eligible Central HP <5.4 tons

AHRI 217117056

AHRI 217117056 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL21KLV-048-230A** and indoor unit CK40HT-48C-**+TDR.
Eligible Central HP <5.4 tons

AHRI 217117057

AHRI 217117057 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL21KLV-048-230A** and indoor unit CK40HT-48C-**+TDR.
Eligible Central HP <5.4 tons

AHRI 217117058

AHRI 217117058 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL21KLV-048-230A** and indoor unit CK40HT-48C-**+TDR.
Eligible Central HP <5.4 tons

AHRI 217117059

AHRI 217117059 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL21KLV-048-230A** and indoor unit CK40HT-48C-**+TDR.
Eligible Central HP <5.4 tons

AHRI 217117060

AHRI 217117060 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL21KLV-048-230A** and indoor unit CK40HT-48C-**+TDR.
Eligible Central HP <5.4 tons

AHRI 217117061

AHRI 217117061 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL21KLV-048-230A** and indoor unit CK40HT-48C-**+TDR.
Eligible Central HP <5.4 tons

AHRI 217117063

AHRI 217117063 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL21KLV-048-230A** and indoor unit CK40HT-48C-**+TDR.
Eligible Central HP <5.4 tons

AHRI 217117064

AHRI 217117064 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL21KLV-048-230A** and indoor unit CK40HT-48C-**+TDR.
Eligible Central HP <5.4 tons

AHRI 217117065

AHRI 217117065 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL21KLV-048-230A** and indoor unit CK40HT-48C-**+TDR.
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Service planning

How GreenFlow handles EL21KLV-048-230A** requests

1

Identify the equipment

Confirm the model or series name, serial number if available, photos, and whether the unit is roof, exterior, basement, or mechanical-room equipment.

2

Describe the service issue

Share no heat, no cooling, weak airflow, error codes, alarms, leaks, noise, control problems, or comfort complaints.

3

Review access and history

Include access notes, tenant or business-hour constraints, filter status, recent repairs, and maintenance records when available.

4

Plan the next step

GreenFlow can route the request for diagnostics, repair planning, maintenance, replacement scope, or related system upgrades.

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Our Happy Customers

Ray

Just had a service call because my tankless water heater stopped working with E110 code. Andrey located the root cause real quick and fixed the issue within half an hour, also gave reasonable recommendations for further maintenance.

Sharad W.

Green Flow and the people who work there are terrific. Vlad and Andre are excellent. Andre was very helpful. He was punctual, respectful, efficient and knowledgeable. He did not try to sell me something I didn’t need ( as others have done before). I was charged $99 which...

Melissa S.

The repair person came quickly and was super efficient and polite, and showed me what to do next time. He gave my dog a quick pay and was off again.

Jahangir R.

They were very organized to communicate and be on time to come to look at my air condition to fix it.

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