Hi all, just wanted to chime in about HVAC in the Illinois area—mainly near the Lake County area. With the extreme weather patterns we get locally, it’s really crucial to have a reliable heating and cooling unit. I just had work done by Optimized Air Energy Star Rated HVAC Round Lake, Www.Audiodraft.Com, in Round Lake, IL, and they were really good—timely help, fair pricing, and took time to explain everything. If you're facing furnace problems or need an AC checkup before the upcoming summer, I’d strongly advise finding a local company that is familiar with local conditions. Take care!