Today our first-floor furnace stopped working and I need some help. I think it's the [electrical] ignition that is failing but I'm not sure if I've diagnosed it properly or if I'm overlooking something... The thermostat was 3 degrees F lower than its set point when I noticed it. The "flame icon" was on so it was trying to run the heat but there was no activity from the HVAC system. I switched the thermostat OFF then ON...I heard the vent blower (not the main blower) start up and after a couple minutes, it just shut off. I went down to the crawl space and saw that after a long time the flame wasn't being lit. In the past, I remember the ignition system glowing reddish-orange before the gas was activated and lit (about 30 sec after the vent blower starts running), but this time I didn't see the glow. I heard a few faint clicks but that was it. No flame was lit, and the vent blower just kept running for a bit. I didn't smell any gas but then again I wasn't super-close to it, either. I didn't see any circuit breakers or fuses related to this. Are there any? The main blower does run when forced in the ON position on the thermostat. The system is about 2.1 years old. We're in Southern Walk in a Dogwood. I'm not sure how long the warranty is on our particular model--does anyone know? If the unit has a parts warranty, do I need to have work done by the original installer (Wittman Mechanical)? I'm not knowledgeable nor experienced with HVAC systems so unless it's something pretty simple that I can repair on my own, I'll call a repair place. Any recommendations? Right now it's not an emergency because our 2nd-floor unit still runs (knock on wood). Plus it's not horribly cold right now. But of course, I'd like to get it fixed asap. Thanks in advance for suggestions, websites, information, etc. for any of the things in my post.