An Igniter is an implement that lights the pilot that enables furnaces to function properly. Though the idea is similar,—light a flame to get heat—the result is very different. You see, Igniters for furnaces work electronically to light the gas and heat the home.
Instead of using a pilot light system, such as seen in older systems, newer gas furnace Igniters— also called hot surface Igniters —send a spark of heat and energy through a thin wire in order to cause the lighting sequence, such as seen in a heating element or light bulb. High temperatures are needed to ignite the gas, so the materials used within the thin wire—or filament—are made out of materials that can withstand and facilitate high heat.
These are the basics of the furnace igniter replacement parts you will find here. At the end of the day, we can provide the highest quality Igniters, the lowest prices, and the best overall shopping experience around if you are looking for plumbing and HVAC products. Call for more information, and thanks for visiting! We know you will be happy with your choice in furnace igniter replacement parts. Follow PlumbersStock on Facebook.
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It fit my needs and good quality. Verified purchase: Yes Condition: New. Skip to main content. About this product. Silicon Carbide is one of the most common components that make up a hot surface igniter. Not only are these igniters used to light gas furnaces, but they are used for lighting stoves, boilers and other appliances that heat things around your house. Carbide is used as an abrasive, as a cutting tool, and has some automotive applications as well.
The first carbide igniters were actually produced in From then until now they have become one the main choices for manufacturers to use as their ignition source. Just like most components on your HVAC system, these parts last about five to ten years. Different hot surface igniters last longer than others. The trend over the last five to ten years has been to use the more durable silicon nitride igniters.
They seem to be less brittle, making them better able to stand the test of time. So why do these silicon carbide igniters break so often? The fact is, a gas flame pours over these ignitors which applies a lot of damaging heat to them. The same thing that makes them work also destroys them! Just today as I was called by one of my techs who said they accidentally broke an HSI as they were cleaning the burner assembly on a routine maintenance call.
It happens. If you took your index finger and thumb and brought them together even somewhat quickly, that would be enough force to break the carbide tip of a hot surface igniter to pieces. A furnace that cycles on and off excessively will reduce the lifespan of an HSI. Making sure the system is properly sized for the house is probably a good idea. We say it all the time , but an improperly sized unit is going to cause all kinds of problems.
An volt HSI should have about 80 volts applied to it. Applying volts to that HSI will cause it break, and sometimes almost immediately. Having too low of voltage may not let the igniter burn hot enough. Once, in my early service years, I replaced a ignitor for a package unit with a ignitor.
I never did that again…. Some field experts say that the oils on the hands of technicians will cause the carbide tip to break down earlier than it should.
One thing is for sure, the fewer contaminants that touch the surface of this red-hot igniter, the better. Other contaminants around the house that can get on the hot surface igniter are sheetrock dust, condensation, dirt, rust, and fiberglass. An overfired gas valve will cause the flame to be hotter than it should be.
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