Suburban 525009 Igniter Electrode – Replaces 232286 (SF Series)

Product Overview

The Suburban 525009 Igniter Electrode is the updated replacement for part 232286, designed for a wide range of Suburban SF series and SHD furnaces. This electrode produces the spark required to ignite the burner, making it an essential component for proper furnace operation.

If your furnace is clicking but not lighting, experiencing delayed ignition, or failing to heat, replacing the igniter electrode is often a quick and effective solution.

Built for durability and precise fitment, this electrode restores reliable ignition performance across many Suburban furnace models.

Key Features

• Replaces Suburban 232286 (updated part number 525009)
• Designed for SF series and SHD furnaces
• Produces spark for reliable burner ignition
• Helps resolve no-ignition and intermittent ignition issues
• Direct OEM replacement for proper fit and function
• Durable construction for long service life
• Direct-fit design for straightforward installation

Specifications

• Part Number: 525009
• Replaces: 232286
• Product Type: Igniter electrode
• Configuration: Single electrode
• Application: Suburban SF series and SHD furnaces

Compatible Furnace Models

Suburban SF Series

• SF-20 / SF-25 / SF-30 / SF-35 / SF-42
• SF-20F / SF-25F / SF-30F / SF-35F / SF-42F
  • (Above Serial #934701426 and up to Serial #210651046)

Suburban SF-Q Series

• SF-20Q / SF-25Q / SF-30Q / SF-35Q / SF-42Q
• SF-20FQ / SF-25FQ / SF-30FQ / SF-35FQ / SF-42FQ

Important Compatibility Note

• Some models are serial number dependent
• SF “F” models must fall within the specified serial number range
• Verify your furnace model and serial number before ordering

When Should You Replace the Igniter Electrode?

You may need the 525009 electrode if your furnace:

• Clicks but does not ignite
• Produces weak or inconsistent spark
• Has delayed ignition
• Cycles without producing heat
• Shows visible wear, corrosion, or carbon buildup

Igniter electrodes are one of the most commonly replaced furnace components.

Why This Part Matters

• Essential for proper ignition of the furnace burner
• Ensures consistent and reliable heating performance
• Helps prevent ignition lockouts and system failures
• Simple, cost-effective fix for common furnace issues

FAQ

What part does this replace?
This replaces Suburban part 232286.

Will this fit all SF series furnaces?
It fits many SF models, but some require specific serial number ranges—verify before ordering.

What furnaces does this fit?
It fits select SF, SF-Q, SF-F, SF-FQ, and SHD2542 models.

Is this a common replacement part?
Yes, igniter electrodes are one of the most frequently replaced furnace components.

Is installation difficult?
Installation is typically straightforward, but proper positioning and gap alignment are important.