Ignitors & Ignition Switches

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Reliable Ignitors for Every System

Ignitors play a crucial role in starting your gas appliances. Whether it’s a furnace, water heater, or boiler, the ignitor ensures safe and efficient ignition every time.

Upgrade Your Furnace Ignitors

Modern furnace ignitors replace outdated pilot lights, offering faster and more reliable starts. They’re built to handle extreme heat and frequent use in home and commercial systems.

Hot Surface Ignitor Efficiency

A hot surface ignitor heats up quickly to ignite gas burners. It’s a popular choice for energy-conscious systems thanks to its fast response and durability.

Why Ignition Controls Matter

Ignition controls oversee your appliance’s start-up process. From detecting flame presence to managing gas flow, they ensure the system operates safely.

Inside the Ignition Control Module

The ignition control module coordinates timing and safety checks. If it detects a failure, it shuts down the system to prevent hazards.

Find the Right Fit

Whether you need a replacement ignitor or a complete ignition control module, choosing compatible parts ensures smooth performance and peace of mind.

Frequently Asked Questions

Signs include:

  • No glow during startup; furnace clicking but doesn’t ignite.
  • Furnace blows cold air or cycles on/off repeatedly.
  • Circuit breaker trips during ignition attempt.
  • Physical damage like cracks or white spots on the ignitor.

  1. Ensure power is off and ignitor cooled.
  2. Visually inspect for cracks or discoloration.
  3. Use a multimeter on the lowest ohms setting:
  • Ideal resistance is typically 40–100 Ω (some sources say 50–400 Ω). Values outside that range indicate a faulty ignitor.

  1. Turn off power and gas.
    Access the ignitor—usually located near the burners.
  2. Unplug its connector and carefully remove it; surface is extremely brittle—handle with care and never touch the ceramic.
  3. Insert the replacement (same spec) and reconnect.
  4. Restore power/gas, then test operation.
  • Thermal stress from heating/cooling cycles leading to cracks.
  • Debris or dust buildup can cause damage or short circuits.
  • Voltage irregularities like power surges.
  • Physical impact or contaminants—for example, oils from skin.
  • Silicon nitride ignitors: typically 7–15 years.
  • Silicon carbide ignitors: about 3–5 years due to brittleness.
  • Modern units often list a lifespan of around 7 years.

They draw a few amperes momentarily during startup. If it draws too high or low current, the ignitor may fail or trip the breaker. Reddit techs advise comparing current draw against manufacturer specs; significant deviations mean replacement.

  • Immediately if it shows visual damage or fails the multimeter or current test.
  • As a preventive measure around the end of its typical lifespan: ~5 years for SiC, ~10 years for SiN.
  • Consider replacement during routine maintenance to avoid mid-winter breakdowns.