Hi all, just wanted to chime in about HVAC services in Illinois—with a focus on the Lake County suburbs. With the crazy weather changes we get locally, it’s key to have a dependable heating and cooling setup. I recently had work done by a local HVAC company called optimized air hvac electric hvac systems (https://www.Cfd-online.com/forums/members/violethgacevedo.html) Air Heating and Cooling in the Round Lake area, and they were really good—quick response, fair pricing, and walked me through the whole process. If you're having issues with furnace problems or need an AC checkup before the next heat wave, I’d highly suggest finding a local company that knows our climate. Stay warm!