Defrost Control Boards

Optimize your HVAC system with defrost control boards that efficiently monitor sensors, detecting ice buildup on critical components. When ice accumulation reaches a certain level, these boards activate defrost mode to melt the frost and prevent issues. While light ice buildup on units is common in winter, heavy frost could signal a need to check your defrost controller. Control outdoor equipment, including the compressor contactor, reversing valve, and fans, with ease using a high-quality defrost controller.

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Showing 1–48 of 62 resultsSorted by popularity

Multi-Functional Defrost Timer, Timed or Manual

ICM Controls

SKU: ICM550

Rated 5.00 out of 5

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ICM550 Defrost Timer Control quantity
Supco SL5709 Refrigerator Defrost Thermostat Replacement

Supco

SKU: SL5709
$38.99
MSRP: $44.84
You save 15%
Supco SL5709 Refrigerator Defrost Thermostat Replacement quantity
120V Defrost Timer for Automatic Defrost

Paragon

SKU: 8141-00
$127.15
MSRP: $521.90
You save 76%
Paragon 8141-00 120V Defrost Controller for Automatic Defrost quantity
208/240V Defrost Timer – Mechanism Only

Paragon

SKU: 8145-20M
$99.74
MSRP: $225.37
You save 56%
Paragon 8145-20M 208/240V Defrost Timer, Mechanism Only quantity
Universal Heat Pump Defrost Control Board

White-Rodgers

SKU: 47D01U-843
$118.57
Emerson 47D01U-843 Universal Heat Pump Defrost Control Board quantity
ICM Controls ICM-UDefrost Universal Time & Temperature Defrost Control for Heat Pumps – NFC-Configurable App, LED Diagnostics

ICM Controls

SKU: ICM-UDEFROST

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ICM Controls ICM-UDefrost Universal Time & Temperature Defrost Control for Heat Pumps – NFC-Configurable App, LED Diagnostics quantity
Refrigerator Defrost Timer, Residential And Commercial

Paragon

SKU: G-1401-00
$18.72
MSRP: $21.53
You save 15%
Paragon G-1401-00 Refrigerator Defrost Timer, Residential and Commercial quantity
Supco SPB1401F Defrost Timer

Supco

SKU: SPB1401F
$11.33
MSRP: $13.03
You save 13%
Supco SPB1401F Defrost Timer quantity
Supco ADC5988 Defrost Control Board For Whirlpool & Maytag Models

Supco

SKU: ADC5988
$25.29
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Defrost Relay – OEM HVAC Replacement Component

Rheem

SKU: 42-19736-86
$34.39
MSRP: $39.55
You save 15%
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Defrost Control Board Kit – Reliable OEM Heat Pump Defrost Management

Rheem

SKU: 47-102684-83
$107.75
MSRP: $123.91
You save 15%
Rheem 47-102684-83 Defrost Control Board Kit – Reliable OEM Heat Pump Defrost Management quantity
Carrier HH18HA279 — OEM Defrost Sensor / Temperature Activation Switch

Carrier

SKU: HH18HA279
$35.34
MSRP: $40.64
You save 15%
Carrier HH18HA279 — OEM Defrost Sensor / Temperature Activation Switch quantity
Carrier HH18HA280 Defrost Stat L80‑50°F — OEM Temperature‑Actuated Switch

Carrier

SKU: HH18HA280
$30.99
MSRP: $35.64
You save 15%
Carrier HH18HA280 Defrost Stat L80‑50°F — OEM Temperature‑Actuated Switch quantity
Lennox 46K67 Defrost Control Board

Lennox

SKU: 46K67
$126.16
MSRP: $149.05
You save 15%
Lennox 46K67 Defrost Control Board quantity
ICM Controls ICM550-ENC Weatherproof Enclosed Multi-Functional Timer

ICM Controls

SKU: ICM550-ENC

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ICM Controls ICM550-ENC Weatherproof Enclosed Multi-Functional Timer quantity
Defrost Timer Control Replacement Board for Nordyne 624519A

ICM Controls

SKU: ICM319C
$44.99
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OEM defrost control board for Armstrong furnace systems

Armstrong Furnace

SKU: R46257-001
$105.63
MSRP: $121.47
You save 13%
Armstrong Furnace R46257-001 Defrost Board quantity
OEM defrost stat for Armstrong Furnace systems

Armstrong Furnace

SKU: R100503-08
$43.71
MSRP: $50.27
You save 15%
Armstrong Furnace R100503-08 Defrost Stat quantity
Defrost air tempering control for Armstrong furnace systems

Armstrong Furnace

SKU: ADFSTAT504-1
$219.75
MSRP: $252.71
You save 13%
Armstrong Furnace ADFSTAT504-1 Defrost Air Tempering Control FM21 quantity
Defrost control timer for select GE refrigerators

GE Appliances

SKU: WR9X489
$31.25
MSRP: $35.94
You save 15%
GE Appliances WR9X489 Defrost Control Timer for Select GE Refrigerators quantity
Genuine OEM defrost control for automatic frost cycle management

GE Appliances

SKU: WR9X482
$65.65
MSRP: $75.50
You save 15%
GE Appliances WR9X482 Defrost Control Board for Select GE Refrigerators quantity
OEM Refrigerator Defrost Control Board for Select GE Models

GE Appliances

SKU: WR09X10041
$63.12
MSRP: $72.59
You save 15%
GE Appliances WR09X10041 Refrigerator Defrost Control Board quantity
OEM Defrost Control Module for GE Refrigeration Systems

GE Appliances

SKU: WR55X21623
$59.74
MSRP: $68.70
You save 15%
GE Appliances WR55X21623 Defrost Control Module for Refrigerators quantity
Defrost Control Board

Trane

SKU: CNT8175
$117.71
MSRP: $135.37
You save 15%
Trane CNT8175 Defrost Control Board quantity
SPDT De-Ice Controller 24V 54-Inch Capillary

Ranco

SKU: E15-256
$245.23
MSRP: $282.01
You save 15%
Ranco E15-256 SPDT De-Ice Controller 24V 54-Inch Capillary quantity
SPDT De-Ice Controller 240V 60-Inch Capillary

Ranco

SKU: E15-2601
$196.04
MSRP: $225.45
You save 15%
Ranco E15-2601 SPDT De-Ice Controller 240V 60-Inch Capillary quantity
Defrost Fan Delay Control SPDT with 60″ Capillary

Ranco

SKU: F25-114
$180.11
MSRP: $207.13
You save 15%
Ranco F25-114 Defrost Fan Delay Control SPDT with 60" Capillary quantity
Defrost Fan Delay Control SPDT with 60″ Capillary

Ranco

SKU: F25-107
$160.76
MSRP: $184.87
You save 15%
Ranco F25-107 Defrost Fan Delay Control SPDT with 60" Capillary quantity
A/C De-Ice Control

Ranco

SKU: A30-2311
$90.81
MSRP: $104.43
You save 15%
Ranco A30-2311 A/C De-Ice Control quantity
Defrost Control Board

Amana-Goodman

SKU: PCBDM133S
$70.03
MSRP: $80.53
You save 15%
Amana PCBDM133S Defrost Control Board quantity
Defrost Control Timer Board with Fuse

Amana-Goodman

SKU: PCBDM101S
$69.16
MSRP: $79.53
You save 15%
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Defrost Control

Trane

SKU: CNT5875
$201.90
MSRP: $232.19
You save 15%
Trane CNT5875 Defrost Control quantity
Defrost Control Board

Trane

SKU: CNT08177
$107.63
MSRP: $123.77
You save 15%
Trane CNT08177 Defrost Control Board quantity
Defrost Control Board

Trane

SKU: CNT4364
$134.26
MSRP: $154.40
You save 15%
Trane CNT4364 Defrost Control Board quantity
Defrost Control Board

Trane

SKU: CNT5010
$134.01
MSRP: $154.11
You save 15%
Trane CNT5010 Defrost Control Board quantity
Defrost Control

Trane

SKU: CNT5482
$129.89
MSRP: $149.37
You save 15%
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Defrost Control Board

Trane

SKU: CNT8176
$113.40
MSRP: $130.41
You save 15%
Trane CNT8176 Defrost Control Board quantity
Defrost Control Board

Trane

SKU: CNT4363
$225.59
MSRP: $259.43
You save 15%
Trane CNT4363 Defrost Control Board quantity
Defrost Control Board

Trane

SKU: CNT5009
$275.24
MSRP: $316.53
You save 15%
Trane CNT5009 Defrost Control Board quantity
Defrost Board

Trane

SKU: CNT4695
$247.91
MSRP: $285.10
You save 15%
Trane CNT4695 Defrost Board quantity
Defrost Control Board

Trane

SKU: CNT4368
$241.98
MSRP: $278.28
You save 15%
Trane CNT4368 Defrost Control Board quantity
Defrost Control Board Kit for HVAC Systems

Rheem

SKU: 47-102684-204
$98.51
MSRP: $113.29
You save 15%
Rheem 47-102684-204 Defrost Control Board Kit for HVAC Systems quantity
Defrost Control Board Kit – Reliable HVAC System Component

Rheem

SKU: 47-102684-194
$114.10
MSRP: $131.22
You save 15%
Rheem 47-102684-194 Defrost Control Board Kit – Reliable HVAC System Component quantity
Defrost Control Board Kit

York

SKU: S1-331-01975-102
$199.06
MSRP: $228.92
You save 15%
York S1‑331‑01975‑102 Defrost Control Board Kit quantity
Defrost Control Board Kit – OEM Heat Pump Defrost Management

Rheem

SKU: 47-21776-86
$101.33
MSRP: $116.53
You save 13%
Rheem 47-21776-86 Defrost Control Board Kit – OEM Heat Pump Defrost Management quantity
Timer/Defrost Board

Carrier

SKU: CESO110063-02
$180.21
MSRP: $207.24
You save 15%
Carrier CESO110063‑02 Timer/Defrost Board quantity
Carrier HK38EA023 OEM Defrost Control Board

Carrier

SKU: HK38EA023
$1,069.40
MSRP: $1,229.81
You save 15%
Carrier HK38EA023 OEM Defrost Control Board quantity
Carrier HK32EA007 – OEM Defrost Control Board for HVAC Systems

Carrier

SKU: HK32EA007
$274.84
MSRP: $316.07
You save 15%
Carrier HK32EA007 – OEM Defrost Control Board for HVAC Systems quantity

Our defrost controllers respond to thermostat requests and adapt to air and coil temperatures, providing seamless operation for single-stage heat pumps. Additional features include universal compatibility, an LED display for easy setup, a square footprint for quick installation, and demand or timed defrost modes. Explore Jackson Systems & Supply for a variety of defrost control boards and timers to meet your needs.