Hot Surface Ignitors heat up and ignite the gas. Ignitors should be handled with care. Avoid direct contact and touching the ignitor with bare hands. Oils from skin contact will cause the ignitor to fail. Ignitors are also very fragile.
How do you tell if Hot Surface Ignitors are bad?
Remove the HSI from furnace. Using a mulitmeter, measure the resistance. A good ignitor will have a resistance of 40 – 90 Ohms. Anything over 90 Ohms indicates a bad hot surface ignitor.
What is a Hot Surface Ignitor?
A hot surface ignitor heats up and glows like a light bulb and then lights the gas.
How long will a ignitor last?
A hot surface ignitor typically lasts up to 3 years. Certain conditions of the furnace and handling of the ignitor will alter the life of the ignitor.
How much does a new Hot Surface Ignitor cost?
Depending on the brand and type of ignitor, you can expect to pay $15 – $30. Of course, if you are not going to install it yourself, labor could cost up to $100.