How do I know if my furnace ignitor is bad?

How do I know if my furnace ignitor is bad?

4 Signs of a Faulty Furnace Ignitor

  1. The Furnace Stops Running. When a furnace won’t run at all, check for a bad ignitor.
  2. Your Furnace Blows Chilly Air. Unless you’ve set your thermostat to COOL, your furnace should not blow cold air.
  3. Does Your Furnace Short Cycle?
  4. A No Glow Ignitor.
  5. We Can Replace Your Furnace Ignitor.

How much does it cost to replace furnace ignitor?

Average Cost of Furnace Ignitor Replacement Homeowners typically pay between $120 to $225 to have the ignitor replaced on their furnace. If the unit is still under warranty, you’ll only pay for labor which runs around 2 hours total and cost around $150.

How does furnace ignitor work?

The hot surface ignitor (HSI) is the most commonly used electronic ignition system. It works like a light bulb filament, heating up when electricity is passed through it. Most are made from silicon nitride or silicon carbide. The igniter is positioned in the flow of gas entering the burners.

Why does my gas furnace not ignite?

The Pilot Light (Faulty Ignition Sensor) The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. This is typically the problem if you can hear your furnace click on but it does not fire up. If the sensor or ignitor is dirty, it will need to be cleaned.

How long does furnace ignitor last?

about seven years

When should I replace my furnace ignitor?

According to the Gas Furnace Guide, ignitors have an average lifespan of four to seven years. So, after about seven years, you may have to replace the ignitor; however, you probably won’t have to replace the entire furnace because other parts, such as the heat exchanger, can last more than 15 years.

Can you manually light a gas furnace with electronic ignition?

If your furnace is equipped with an electronic igniter, you cannot light the furnace manually. However, you may be able to get the furnace working by turning off the igniter and resetting it. Find the paperwork for your particular furnace to locate the reset button or switch.

Is the gas valve on my furnace bad?

Gas flows from your supply tank into your furnace through the gas valve. If the valve is faulty, it could allow gas to leak out into the surrounding environment. If you notice any sign of a faulty gas valve or you just suspect your valve isn’t working properly, contact a professional for furnace repairs immediately.

How much does a gas valve for furnace cost?

Furnace Gas Valve Replacement Costs A furnace gas valve costs anywhere from $200 to $600 to replace. This part allows natural gas or propane to flow to your unit. It’s usually attached to the thermocouple for emergency cutoff when necessary.

What causes a gas valve to go bad?

The valve itself may have simply worn out or may be damaged due to basement seepage or submersion. Alternately, one of the electronic gas ignition components or a glitch in the safety circuit may be to blame. If your furnace has a standing pilot light, the thermocouple could be worn out.

How do you free up a stuck gas valve?

Replace the valve while the gas is off. It is probably a “T” handle valve and if so you just need to use more force to turn it, or slightly loosen the nut on the bottom, turn the handle, and then retighten the nut. BUT, you should replace the valve and to do that YOU will have to turn the gas off at the meter anyway.

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