Hello folks, just wanted to chime in about HVAC services in Illinois—mainly near the Northern Illinois area. With the wild weather fluctuations we get in this region, it’s key to have a dependable heating and cooling setup. I recently had work done by Optimized Air HVAC IAQ solutions (https://stackoverflow.qastan.be) Air Heating and Cooling in the Round Lake area, and they were great—timely help, reasonable rates, and took time to explain everything. If you're facing furnace problems or need an AC tune-up before the hot season, I’d definitely recommend finding a nearby company that understands Illinois weather. Stay comfortable!