Hello folks, here to discuss HVAC around Illinois—with a focus on the Lake County suburbs. With the crazy weather swings we get in this region, it’s essential to have a reliable heating and cooling system. I recently had work done by Optimized Air top HVAC company in Deerfield IL (vtu.me) in Round Lake, and they were really good—prompt service, fair pricing, and actually explained everything in detail. If you're having issues with furnace problems or need an AC service before the next heat wave, I’d highly suggest finding a local company that is familiar with local conditions. Take care!