Integrated Furnace Controls Universal Replacement

Replaces over 550 OEM, White-Rodgers and competitive models

Products

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21M51U-843, Integrated Furnace Controls Universal Replacement

Ignitor Voltage	120 Vac
Mounting	Standoff
Stages	Two-Stage
Product Category	Ignition Controls and Modules
Model Number	21M51U-843

120 Vac

Standoff

Two-Stage

Ignition Controls and Modules

21M51U-843

availability

Available

WHERE TO BUY

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21V51U-843

21V51U-843, Integrated Furnace Controls Universal Replacement

Ignitor Voltage	120 Vac
Mounting	Standoff
Stages	Two-Stage
Product Category	Ignition Controls and Modules
Model Number	21V51U-843

120 Vac

Standoff

Two-Stage

Ignition Controls and Modules

21V51U-843

availability

Available

WHERE TO BUY

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50A55 843S1

50A55-843, Integrated Furnace Controls Universal Replacement

Ignitor Voltage	120 Vac
Mounting	Flush Mount
Stages	Single Stage
Product Category	Ignition Controls and Modules
Model Number	50A55-843

120 Vac

Flush Mount

Single Stage

Ignition Controls and Modules

50A55-843

availability

Available

WHERE TO BUY

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50A65 843S1

50A65-843, Integrated Furnace Controls Universal Replacement

Ignitor Voltage	80 Vac
Mounting	Flush Mount
Stages	Single Stage
Product Category	Ignition Controls and Modules
Model Number	50A65-843

80 Vac

Flush Mount

Single Stage

Ignition Controls and Modules

50A65-843

availability

Available

WHERE TO BUY

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50M56U-843

50M56U-843, Integrated Furnace Controls Universal Replacement

Ignitor Voltage	120 Vac
Mounting	Flush Mount
Stages	Single Stage
Product Category	Ignition Controls and Modules
Model Number	50M56U-843

120 Vac

Flush Mount

Single Stage

Ignition Controls and Modules

50M56U-843

availability

Available

WHERE TO BUY

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50M56X-843

50M56X-843, Integrated Furnace Controls Universal Replacement

Ignitor Voltage	120 Vac
Mounting	Flush Mount
Stages	Single Stage
Product Category	Ignition Controls and Modules
Model Number	50M56X-843

120 Vac

Flush Mount

Single Stage

Ignition Controls and Modules

50M56X-843

availability

Available

WHERE TO BUY

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50X57-843

50X57-843, Integrated Furnace Controls Universal Replacement

Ignitor Voltage	120 Vac
Mounting	Flush, Standoff or Tab
Stages	Single Stage
Product Category	Ignition Controls and Modules
Model Number	50X57-843

120 Vac

Flush, Standoff or Tab

Single Stage

Ignition Controls and Modules

50X57-843

availability

Available

WHERE TO BUY

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Features

Reduces inventory by providing maximum control replacement coverage
Select models include a universal 120V nitride ignitor to allow replacement of 80V and 120V controls
Diagnostic LED indicators streamline installation and system troubleshooting
120V air cleaner output and 120V humidifier output up to 1 Amp max
Factory standard safety timings and adjustable fan delay options
Replaceable automotive style fuse