Evaporator coil

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Lennox Evaporator coil CK40HT-42B-0*

Lennox Lennox AHRI Indoor - CK40HT horizontal indoor coil Evaporator coil Repair, maintenance, and replacement planning
Lennox CK40HT-42B-0* product image

Technical Specifications

Product Specs

  • AHRI unit role: Indoor
  • AHRI model/pattern: CK40HT-42B-0*+TDR
  • AHRI records represented: 94
  • AHRI equipment type: HP - Split System
  • AHRI refrigerant: R-410A
  • Verified catalog model: CK40HT-42B-0*+TDR
  • Verified product family: CK40HT horizontal indoor coil
  • Verified catalog brand: Lennox
  • Verified model family: CK40HT
  • AHRI model/pattern: CK40HT-42B-0*+TDR
  • Nominal capacity: 3.5 ton
  • Capacity code: 42
  • 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
ENERGY STAR certified HP - Split System

AHRI 214622412

AHRI 214622412 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-036-230A** and indoor unit CK40HT-42B-0*+TDR.

ENERGY STAR certified HP - Split System

AHRI 214622413

AHRI 214622413 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-036-230A** and indoor unit CK40HT-42B-0*+TDR.

ENERGY STAR certified HP - Split System

AHRI 214622414

AHRI 214622414 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-036-230A** and indoor unit CK40HT-42B-0*+TDR.

ENERGY STAR certified HP - Split System

AHRI 214622415

AHRI 214622415 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-036-230A** and indoor unit CK40HT-42B-0*+TDR.

ENERGY STAR certified HP - Split System

AHRI 214622416

AHRI 214622416 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-036-230A** and indoor unit CK40HT-42B-0*+TDR.

ENERGY STAR certified HP - Split System

AHRI 214622417

AHRI 214622417 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-036-230A** and indoor unit CK40HT-42B-0*+TDR.

ENERGY STAR certified HP - Split System

AHRI 214622418

AHRI 214622418 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-036-230A** and indoor unit CK40HT-42B-0*+TDR.

ENERGY STAR certified HP - Split System

AHRI 214622419

AHRI 214622419 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-036-230A** and indoor unit CK40HT-42B-0*+TDR.

ENERGY STAR certified HP - Split System

AHRI 214622420

AHRI 214622420 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-036-230A** and indoor unit CK40HT-42B-0*+TDR.

ENERGY STAR certified HP - Split System

AHRI 214622421

AHRI 214622421 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-036-230A** and indoor unit CK40HT-42B-0*+TDR.

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Service planning

How GreenFlow handles CK40HT-42B-0* 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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