If your furnace isn't igniting properly, this ERP IG101 igniter might be the simple fix you need! It's a universal replacement that fits a ton of different furnace models - replaces part numbers like AF101, FC007, 902661, and many others. The round hot surface design is what most modern furnaces use for reliable ignition. Installation is pretty straightforward if you're comfortable with basic DIY - just make sure to turn off power to your furnace first for safety. The quality feels solid - this isn't some cheap knockoff that'll fail in a few months. Much more affordable than calling a repair technician for what might be a simple part replacement. If your furnace is clicking but not lighting, or you see the igniter glowing but not consistently, this replacement could solve your heating problems. Fits various brands and models, but always double-check compatibility with your specific furnace before ordering. The construction seems durable enough to handle the heat cycles that furnace igniters go through. Seriously, if you're dealing with a cold house and suspect igniter issues, this $20 part could save you a $200 service call. Just remember basic safety - power off completely before working on your furnace, and if you're not comfortable, definitely call a professional. But for handy homeowners, this is often a quick fix that gets your heat running again!