Ignition Module – Replaces Fenwal 35-705701-103 – NBK-20539

Special order item - may require extra time to fulfill and ship. Special order parts are non-returnable.

In stock
SKU: SO-20539
Regular price $330.00
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NBK-20539 – Ignition Module – NBK

The NBK-20539 Ignition Module is a dependable OEM-equivalent replacement designed for HVAC ignition control applications. This module helps ensure reliable burner ignition and consistent heating system performance. It is a direct replacement for the widely used Fenwal 35-705701-103 ignition module.

Built to meet or exceed OEM specifications, the NBK-20539 provides a precise fit and dependable operation, making it an ideal solution for HVAC technicians servicing residential and light commercial heating equipment.

Key Features

  • OEM-Compatible Replacement: Direct replacement for Fenwal 35-705701-103
  • Reliable Ignition Control: Supports safe and consistent burner startup
  • Durable Electronics: Built for long service life in HVAC environments
  • Direct Fit Design: Helps simplify installation and reduce downtime

Specifications

  • SKU: 20539
  • UPC: 810069184296
  • Category: Ignition Module / Ignition Controls / HVAC
  • OEM Brand: Fenwal
  • Application: HVAC ignition control replacement

Equivalent To

  • Fenwal: 35-705701-103

Why Choose the NBK-20539?

The NBK-20539 is a trusted ignition module replacement for HVAC professionals seeking OEM-level compatibility and dependable system performance. It helps restore proper ignition function and supports safe heating operation.

Installation Tips

  • Disconnect all power sources before servicing ignition control components.
  • Verify the replacement module matches the original part number and wiring configuration.
  • Inspect ignition leads and flame sensors for wear during installation.
  • Test system startup after installation to confirm proper burner ignition.

Pairs Well With

Flame Sensors, Hot Surface Igniters, Gas Valves, HVAC Control Boards