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Quick specs
Part Type
Defrost control board
Fits
Trane 2TWB3018/3024/3030 heat pumps
Dimensions
3.35 x 3.3 x 1.7 in
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
SKU: CNT05875 · Category: DEFROST CONTROL BOARDS

TRANE Defrost Control Board CNT05875

Demand Defrost Technology·Precise Sensor Control

$192.27

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  • Free shipping — most items ship by the next day

Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.

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SKU: CNT05875 · Category: DEFROST CONTROL BOARDS
TRANE Defrost Control Board CNT05875
Quick specs
Part Type
Defrost control board
Fits
Trane 2TWB3018/3024/3030 heat pumps
Dimensions
3.35 x 3.3 x 1.7 in
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.

TRANE Defrost Control Board CNT05875

A genuine Trane (American Standard) replacement part designed for reliable operation in Trane and American Standard heat pump systems.

Key Features

  • Demand Defrost Technology: Monitors outdoor coil temperature and ambient air temperature to initiate defrost cycles only when ice buildup is detected, optimizing performance.
  • Precise Control: Uses sensor inputs for intelligent timing—terminates defrost quickly once the coil is clear (typically short cycles of 3–6 minutes).
  • Durable OEM Construction: Factory-approved board built to exact Trane specifications for seamless compatibility and long-term reliability.
  • Easy Installation: Direct replacement for compatible models; includes standard wiring connections for heat pump defrost control.
  • Compatibility: Specifically recommended for Tyler manufactured products (use CNT04695 for Fort Smith products). Commonly found in various Trane heat pump models.

Benefits

  • Improved Efficiency: Prevents unnecessary defrost cycles, reducing energy waste and maintaining higher heating performance during cold weather.
  • Enhanced System Protection: Helps avoid ice buildup on the outdoor coil, which can restrict airflow and strain the compressor, extending the life of your HVAC equipment.
  • Consistent Comfort: Ensures reliable heat pump operation in winter conditions by keeping the system running optimally with minimal interruptions.
  • Cost Savings: OEM quality means fewer callbacks and longer service intervals compared to generic alternatives.
  • Peace of Mind: Backed by Trane engineering for dependable performance in residential and light commercial applications.

This high-quality control board is ideal for HVAC technicians and homeowners seeking an exact OEM match to restore peak efficiency and reliability to their Trane heat pump system. Always verify compatibility with your specific model before installation.

Why homeowners choose NAW

Genuine OEM parts

Every part we sell is the real thing — authorized, factory-genuine, and backed by the full manufacturer warranty.

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Find your part by model number, add to cart, and get it delivered to your door — no middleman, no markup.

30-day hassle-free returns

Ordered the wrong part? Send it back within 30 days.

Help when you need it

Not sure if this is the right part? Call us at (888) 292-0874 and we’ll help you find the correct replacement.
Key features
  • Demand Defrost Technology — defrosts only when ice buildup is detected
  • Precise Sensor Control — monitors coil and ambient temperatures
  • Genuine Trane Part — for Trane and American Standard heat pumps
  • Optimized Performance — reliable heating in cold weather
Specifications
Defrost Type Demand defrost
Sensor Inputs Outdoor coil temperature and ambient air temperature
Typical Defrost Cycle 3-6 minutes

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