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Evaporator coil

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Lennox Evaporator coil CK40DT-42B-0*

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Lennox Lennox AHRI Indoor - CK40DT dedicated indoor coil Evaporator coil Repair, maintenance, and replacement planning
Lennox CK40DT-42B-0* product image

Technical Specifications

Product Specs

  • AHRI unit role: Indoor
  • AHRI model/pattern: CK40DT-42B-0*+TDR
  • AHRI records represented: 36
  • AHRI equipment type: HP - Split System
  • AHRI refrigerant: R-410A
  • Verified catalog model: CK40DT-42B-0*+TDR
  • Verified product family: CK40DT dedicated indoor coil
  • Verified catalog brand: Lennox
  • Verified model family: CK40DT
  • AHRI model/pattern: CK40DT-42B-0*+TDR
  • Nominal capacity: 3.5 ton
  • Capacity code: 42
  • Cabinet code: B
  • Configuration: dedicated 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

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ENERGY STAR certified HP - Split System

AHRI 214622299

AHRI 214622299 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-030-230A** and indoor unit CK40DT-42B-0*+TDR.
ENERGY STAR certified HP - Split System

AHRI 214622300

AHRI 214622300 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-030-230A** and indoor unit CK40DT-42B-0*+TDR.
ENERGY STAR certified HP - Split System

AHRI 214622301

AHRI 214622301 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-030-230A** and indoor unit CK40DT-42B-0*+TDR.
ENERGY STAR certified HP - Split System

AHRI 214622302

AHRI 214622302 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-030-230A** and indoor unit CK40DT-42B-0*+TDR.
ENERGY STAR certified HP - Split System

AHRI 214622304

AHRI 214622304 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-030-230A** and indoor unit CK40DT-42B-0*+TDR.
ENERGY STAR certified HP - Split System

AHRI 214622305

AHRI 214622305 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-030-230A** and indoor unit CK40DT-42B-0*+TDR.
ENERGY STAR certified HP - Split System

AHRI 214622306

AHRI 214622306 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-030-230A** and indoor unit CK40DT-42B-0*+TDR.
ENERGY STAR certified HP - Split System

AHRI 214622307

AHRI 214622307 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-030-230A** and indoor unit CK40DT-42B-0*+TDR.
ENERGY STAR certified HP - Split System

AHRI 214622308

AHRI 214622308 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-030-230A** and indoor unit CK40DT-42B-0*+TDR.
ENERGY STAR certified HP - Split System

AHRI 214622309

AHRI 214622309 identifies a Mass Save qualified HP - Split System from Lennox with outdoor unit EL17XP1-030-230A** and indoor unit CK40DT-42B-0*+TDR.
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Service planning

How GreenFlow handles CK40DT-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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Randy J.

Thanks to Andrey for an amazingly quick response to my request for a service call. He diagnosed and fixed my issue within 24 hours of my asking for help. Excellent service. Thanks.

Jenny W.

Great service! On time, knowledgeable & professional

Michael C.

always available, easy to get a hold of, as a property manager I get lots no heat emergency, usually get to it same day or next day

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...

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