Evaporator coil

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Lennox Evaporator coil CK40HT-36B-**

Lennox Lennox AHRI Indoor - CK40HT horizontal indoor coil Evaporator coil Repair, maintenance, and replacement planning
Lennox CK40HT-36B-** product image

Technical Specifications

Product Specs

  • AHRI unit role: Indoor
  • AHRI model/pattern: CK40HT-36B-**+TDR
  • AHRI records represented: 38
  • AHRI equipment type: Central HP
  • AHRI tonnage: 2.816666666666667
  • AHRI refrigerant: R-454B
  • Verified catalog model: CK40HT-36B-**+TDR
  • Verified product family: CK40HT horizontal indoor coil
  • Verified catalog brand: Lennox
  • Verified model family: CK40HT
  • AHRI model/pattern: CK40HT-36B-**+TDR
  • Nominal capacity: 3 ton
  • Capacity code: 36
  • Cabinet code: B
  • Configuration: horizontal indoor coil for commercial split-system applications
  • Official family range: 1.5-5 tons
  • Refrigerant: matched-system dependent; confirm metering device/TXV for the installed outdoor unit
  • Official product page: https://www.lennox.com/commercial/products/split-systems/indoor-coils/ck40-indoor-coil

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

View All
Eligible Central HP <5.4 tons

AHRI 216769592

AHRI 216769592 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL18KSLV-036-230A** and indoor unit CK40HT-36B-**+TDR.

Eligible Central HP <5.4 tons

AHRI 216769593

AHRI 216769593 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL18KSLV-036-230A** and indoor unit CK40HT-36B-**+TDR.

Eligible Central HP <5.4 tons

AHRI 216769594

AHRI 216769594 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL18KSLV-036-230A** and indoor unit CK40HT-36B-**+TDR.

Eligible Central HP <5.4 tons

AHRI 216769595

AHRI 216769595 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL18KSLV-036-230A** and indoor unit CK40HT-36B-**+TDR.

Eligible Central HP <5.4 tons

AHRI 217189862

AHRI 217189862 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL18KSLV-036-230A** and indoor unit CK40HT-36B-**+TDR.

Eligible Central HP <5.4 tons

AHRI 217189863

AHRI 217189863 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL18KSLV-036-230A** and indoor unit CK40HT-36B-**+TDR.

Eligible Central HP <5.4 tons

AHRI 217189864

AHRI 217189864 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL18KSLV-036-230A** and indoor unit CK40HT-36B-**+TDR.

Eligible Central HP <5.4 tons

AHRI 217189865

AHRI 217189865 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL18KSLV-036-230A** and indoor unit CK40HT-36B-**+TDR.

Eligible Central HP <5.4 tons

AHRI 217189866

AHRI 217189866 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL18KSLV-036-230A** and indoor unit CK40HT-36B-**+TDR.

Eligible Central HP <5.4 tons

AHRI 217189867

AHRI 217189867 identifies a Mass Save qualified Central HP <5.4 tons from LENNOX with outdoor unit EL18KSLV-036-230A** and indoor unit CK40HT-36B-**+TDR.

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Service planning

How GreenFlow handles CK40HT-36B-** 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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