What is a hot surface ignitor for a furnace?
What is a hot surface igniter? A silicon nitride hot surface igniter is a device to light gas in gas burner, gas furnace or gas boiler appliances. Hot surface ignitor are the most commonly used electronic ignition system. When the gas valve opens, the gas is ignited by the igniter.
Can a hot surface igniter gas?
Once the flame sensing technology confirms the pilot is lit, it will allow gas to flow to the burner and ignite flames to the entire system. If the pilot does not light, the application will automatically shut-off the gas valve to avoid risk of explosion.
How much is a hot surface igniter for a furnace?
Here’s the bottom line: Whether for a natural gas furnace, oil, or a propane furnace, replacing a furnace ignitor–including parts and labor–will cost you around $300 – $425 for a qualified contractor to install. Compare that to, say, a draft inducer motor, which will cost $400 – $1,500 to replace.
Why won’t my furnace ignite?
Other possible causes for why a furnace won’t ignite include malfunctioning thermocouplers and flame sensors, dirty ignition parts or air in the supply gas line. You may need a qualified HVAC technicians to diagnose and repair the problem.
What is a hot surface igniter?
The hot surface igniter, or glow bar as it is commonly referred to, is a device that lights the burners in your furnace. Just as you used to have a pilot light in the old furnaces, the hot surface igniter replaces that pilot light and provides an energy-efficient way of lighting the burners.
What is hot surface ignition system?
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 located in the flow of gas entering the burners.
What is a furnace ignitor?
In the simplest sense, a furnace ignitor is the part of your heater that turns fuel into heat. Your ignitor lights the burner, sparking the combustion process. That’s the simple way to describe it.