Sears Home Services
Sears Home Advantage
appointment lookup logoAppointment Lookup
telephone logo213-596-2538
RepairHome WarrantyTune-Up & MaintainFencingShop Parts
Resources
RepairHome WarrantyTune-Up & MaintainFencingShop PartsResource CenterGlossaryHelp
sears home advantageSears Home Advantageappointment lookup logoAppointment Lookup

Table of Contents

The Importance of Regularly Cleaning Your Furnace Ignitor

How to Clean Furnace Ignitor: A Step-by-Step Guide

Common Furnace Ignition Problems and How to Troubleshoot Them

  1. Resource Center
  2. Maintain

How to Clean the Furnace Igniter: A Comprehensive Guide

4 min readUpdated Nov. 05, 2024Terry MehilosHVAC
How to Clean the Furnace Igniter: A Comprehensive Guide

Welcome to Sears Home Services, your go-to platform for all home maintenance needs. In this guide, we'll show you how to clean your furnace igniter, a critical component of your heating system. Regular maintenance of your furnace igniter is vital for its optimal functioning and preventing potential problems.

We'll provide you with a thorough, step-by-step guide on how to clean the furnace igniter to ensure your heating system runs smoothly. We'll also touch on common furnace igniter problems and offer troubleshooting tips to help you solve them. So, let's embark on the journey to a well-maintained furnace igniter and an efficient heating system.

KEY TAKEAWAYS

  • Dust or debris accumulation can interfere with furnace ignitor operation.
  • Clean the ignitor regularly as described in this article to keep your furnace operating smoothly and efficiently.
  • Schedule furnace repair service when the furnace won’t ignite even after cleaning the ignitor.

The Importance of Regularly Cleaning Your Furnace Ignitor

The ignitor for your furnace, lighting the gas burners that warm your home, is an essential significant part of your heating system. Dust or debris accumulation can interfere with its function, making regular cleaning crucial.

If you neglect the task of cleaning your furnace ignitor, it may not produce a steady spark, leading to delayed or failed ignition. This can result in inefficient combustion, reduced heating capability, and frequent system shutdowns. Over time, dirt and grime can cause the ignitor for your furnace to overheat, potentially damaging other furnace components and creating a fire hazard.

Learning how to clean the furnace igniter regularly not only promotes optimal performance but also extends its lifespan. Removing dirt, dust, and other debris helps prevent premature wear and tear, maintaining the igniter's efficiency, reliability, and saving you from expensive repairs or replacements.

How to Clean Furnace Ignitor: A Step-by-Step Guide

Safety is paramount when learning how to clean furnace ignitor. Follow these safety measures:

  • Switch off the furnace power at the circuit breaker.
  • Allow the furnace to cool down before you start.
  • Wear safety goggles and gloves to protect your eyes and hands.

You'll need a few tools for cleaning the furnace ignitor:

  • Screwdriver
  • Soft-bristle brush or toothbrush
  • lint-free cloth
  • Isopropyl alcohol

Follow these steps on how to clean the furnace igniter:

  1. Switch off the furnace power.
  2. Remove the igniter's access panels or covers. Refer to your owner’s manual for instructions.
  3. Gently brush away visible dirt or debris.
  4. Soak a lint-free cloth in isopropyl alcohol.
  5. Wipe the ignitor for the furnace with the damp cloth to remove residual dirt.
  6. Let the ignitor dry then reinstall the panels or covers.
  7. Restore the power and test your furnace.

By following these steps, you can effectively clean your furnace ignitor, contributing to an efficient heating system.

Common Furnace Ignition Problems and How to Troubleshoot Them

If you're experiencing furnace ignition troubles, it's important to identify the issue and take appropriate action. A dirty igniter can affect furnace ignition, but luckily, cleaning the furnace ignitor is fairly straightforward. Here are some signs that your furnace ignitor needs cleaning:

  • No ignition spark or glow: If there are no sparks or glow when your furnace tries to ignite, the furnace ignitor likely needs cleaning.
  • Delayed ignition: If there's a delay between the furnace starting and the ignition, a dirty ignitor for the furnace may be to blame.
  • Intermittent ignition: If your furnace ignition is inconsistent, cleaning the furnace ignitor may help.

While a dirty ignitor is often the culprit, other issues could be at play, including:

  • Faulty gas valve: A faulty gas valve can prevent the furnace from receiving the necessary gas supply.
  • Ignition control board failure: If the ignition control board is faulty, it might not send the correct signals to the ignitor for the furnace.
  • Thermostat issues: A faulty thermostat can disrupt the ignition sequence.
  • Ventilation or blower issues: The furnace won’t start if switches and sensor detect a lack of ventilation or airflow through the furnace.

Here are some troubleshooting tips to resolve a furnace ignition failure:

  • Check for a proper gas supply: Make sure the furnace's gas supply valve is open and there are no blockages in the gas line.
  • Inspect the igniter: If you suspect the igniter is dirty, remove it carefully and clean it using a soft cloth or brush. Always follow the manufacturer's instructions when cleaning the furnace ignitor.
  • Examine the gas valve: If the gas valve seems faulty, contact a professional HVAC technician.
  • Test the thermostat: Check the thermostat by adjusting the temperature and observing if the furnace ignites as expected.

Know when to get professional help for mold in your air conditioner

Remember, if you're uncomfortable performing these troubleshooting steps, always schedule service to have a licensed HVAC technician diagnose and fix the furnace ignition issue safely and effectively.

Schedule your HVAC maintenance now!

HVAC checkups from Sears Home Services help keep your heating and cooling system running at its best. Prevent costly repairs and can make your HVAC system more energy efficient with routine maintenance.

Call (213) 596-2538 or schedule online now.

Was this information helpful?

Schedule your HVAC maintenance now!

Maintain HVAC Resources

Title image for blog article "How Does a Ductless Air Conditioner Work?"
6 min readNov. 19

Learn how a ductless air conditioner works and how to keep it in top shape.

Title image for blog article "How Does a Mini-Split Air Conditioner Work?"
9 min readNov. 13

Learn how a mini-split air conditioner works and whether it’s right for your home.

A homeowner adjusts the temperature setting on her wall thermostat.
7 min readNov. 13

Learn how a heat pump works to efficiently heat and cool your home while saving energy and money year-round. Discover their benefits, types, and maintenance tips.

The condensing unit of a central air conditioner outside of a suburban home.
7 min readNov. 13

Wondering how an air conditioner works? Discover how an AC operations, efficient performance tips, and the secrets to keeping your home cool and comfortable year-round.

Glossary Terms

A humidifier is a device designed to increase humidity levels in a single room or an entire building, improving air quality and comfort.

Swamp cooling, also known as evaporative cooling, is a method that cools air through the natural process of water evaporation. It is energy-efficient and environmentally friendly, particularly effective in hot, dry climates.

Freon is a trade name for a group of chlorofluorocarbons (CFCs) used as refrigerants in air conditioning and refrigeration systems, known for its role in ozone depletion.

An inverter AC unit is an air conditioning system equipped with inverter technology that allows it to vary the compressor speed, enabling precise temperature control and increased energy efficiency.

Common Appliance Symptoms

The most common reasons your Whirlpool washer won't stop filling are a clogged water valve, a bad water-level pressure switch, or a malfunctioning electronic control board.

The most common reasons your Whirlpool washer won't spin or drain are a seized gearcase, a broken motor, or a failed door switch.

The most common reasons your Whirlpool washer won't turn off are a malfunctioning electronic control board, broken motor or a jammed door lock assembly.

The most common reasons your Whirlpool washer won't start cycle are a malfunctioning electronic control board, jammed door lock assembly or a faulty user interface.

The most common reasons your Whirlpool washer vibrates are a damaged suspension rod, malfunctioning electronic control board or a dead fan.

The most common reasons your Whirlpool washer is experiencing the rinse cycle not working are a broken lid switch, a bad water-level pressure switch, or a malfunctioning electronic control board.