Lennox CK40UT-48B-71 15.5" Width 48,000 BTU Uncased Coil

Lennox CK40UT-48B-71 15.5" Width 48,000 BTU Uncased Coil

CK40UT-48B-71

In stock

  • Lennox CK40UT-48B-71 15.5" Width 48,000 BTU Uncased Coil

Uncased upflow R-454B coil for 4 ton systems that fits 17.5-inch B cabinet Lennox furnaces. Call (913) 364-0070 to confirm your match.

  • Fast shipping
  • Expert phone help
  • Manufacturer warranty
  • AHRI-matched pairings
  • Licensed startup required
$1,110.45
$1,110.45
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Shop by size and efficiency

Outdoor units in the same size

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About The Lennox CK40UT-48B-71

The Lennox CK40UT-48B-71 is an uncased upflow evaporator coil for 4 ton R-454B systems, with a factory-installed R-454B expansion valve. It fits a 17.5-inch B cabinet Lennox furnace.

Key specs

  • Capacity: 4 tons nominal
  • Refrigerant: R-454B only, with a refrigerant detection sensor installed at the factory
  • Cabinet: B size, 15.5 inches wide uncased, for a 17.5-inch furnace cabinet
  • Connections: 7/8-inch suction and 3/8-inch liquid, sweat, plus two 3/4-inch FPT condensate drains on an anti-microbial drain pan
  • Construction: Lennox Quantum coil with aluminum tubing and ripple-edged aluminum fins

Reading the model number

The first C means indoor coil, K means R-454B, and 40 is the Quantum coil series. The U after 40 is the upflow uncased cabinet, T is the factory expansion valve, 48 is the 4 ton size, B is the 17.5-inch cabinet that matches B furnaces, and 71 means R-454B only.

What it pairs with

It lines up with Lennox furnaces that carry the B cabinet letter. The AHRI Directory lists it with these Lennox units we sell: EL15KC1, EL16KC1, EL18KCV, EL22KCV, ML13KC1, ML14KC1, and ML17KC2 air conditioners and EL16KP1, EL18KSLV, EL19KPV, and ML14KP1 heat pumps. The best listed match we carry is the EL22KCV-036-230 air conditioner on an EL280UH045E36A furnace, at 21.75 SEER2.

Sizing and fit

Choose the size to match your outdoor unit's tonnage, and the cabinet letter to match your furnace. If your furnace has no built-in RDS mitigation control, it needs Lennox's RDS blower control board, ordered separately. Have your outdoor unit's model number ready when you call, and we'll check it against Lennox's AHRI matchups.

Warranty and registration

HVAC USA is an authorized Lennox reseller, and everything we sell is new factory equipment. Your full Lennox warranty applies when a licensed, manufacturer-certified contractor installs your system and registers it within 60 days.

Shipping and help

It ships from our Kansas City warehouse. Call (913) 364-0070, Monday to Friday, 9am to 5pm CST, and we'll help you confirm sizing and an AHRI-matched pairing before you order.

Paired With

AHRI-matched equipment that works with this unit. Add a full system or individual pieces.

Filter matches

EL22KCV-036-230

SEER2 21.75

AHRI number 217886060

SEER
21.75
EER
13
Cooling
35600
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 21.75

AHRI number 217885744

SEER
21.75
EER
13.2
Cooling
35200
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 21.25

AHRI number 217886059

SEER
21.25
EER
13
Cooling
35000
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 21.25

AHRI number 217886061

SEER
21.25
EER
13.2
Cooling
34800
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-024-230

SEER2 20.75

AHRI number 217885325

SEER
20.75
EER
14.4
Cooling
23400
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-024-230

SEER2 20.75

AHRI number 217885329

SEER
20.75
EER
14.4
Cooling
23400
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 20.75

AHRI number 217886119

SEER
20.75
EER
13
Cooling
34600
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 20.75

AHRI number 217885747

SEER
20.75
EER
13.2
Cooling
35400
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 20.75

AHRI number 217885750

SEER
20.75
EER
13.2
Cooling
35400
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-024-230

SEER2 20.25

AHRI number 217885327

SEER
20.25
EER
14.6
Cooling
24200
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-024-230

SEER2 20.25

AHRI number 217885328

SEER
20.25
EER
14
Cooling
24200
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 20.25

AHRI number 217886154

SEER
20.25
EER
12.8
Cooling
34400
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 20.25

AHRI number 217885756

SEER
20.25
EER
13
Cooling
34600
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 20.25

AHRI number 217885748

SEER
20.25
EER
12.9
Cooling
35200
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 20.25

AHRI number 217885749

SEER
20.25
EER
13
Cooling
35600
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 20.25

AHRI number 217885758

SEER
20.25
EER
12.8
Cooling
34400
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 20.25

AHRI number 217885759

SEER
20.25
EER
13.2
Cooling
34600
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 20.25

AHRI number 217885739

SEER
20.25
EER
12.6
Cooling
34800
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 20.25

AHRI number 217885740

SEER
20.25
EER
12.6
Cooling
34800
Refrigerant
R-454B

Adds missing pieces only. Items already in your cart are skipped.

EL22KCV-036-230

SEER2 20.25

AHRI number 217885742

SEER
20.25
EER
12.8
Cooling
34400
Refrigerant
R-454B

Furnace

EL196UH045XE36B*

SKU: EL196UH045XE36B

Adds missing pieces only. Items already in your cart are skipped.

Specifications

Specification Value
Manufacturer Lennox
SKU CK40UT-48B-71
Product type Evaporator Coil
Coil width 17.5"
Capacity (BTU) 48,000
Shipping weight (lb) 43
Refrigerant R-454B
Fits furnace cabinet width (in) 17.5
Cabinet size letter B

Ordering

Detail Value
Lead time Ships from our Kansas City warehouse. Most in-stock items leave in 1 to 3 business days; special-order equipment is confirmed by phone before ship.
Freight note Ships residential freight (curbside). Will-call available at our Kansas City warehouse. Call (913) 364-0070 for liftgate, scheduling, or commercial delivery.

Documents

Spec sheet

Installation instructions