All Temp specializes in Furnace Repair and AC Service for Chicago, Chicago, IL, and surrounding communities. We are your AC Repair professionals!.Air duct cleaning, dryer vent cleaning HVAC company servicing Chicago, IL and the Chicagoland area. Vent cleaning, furnace air conditioner service, repair, installation..King offers heating, air conditioning, and plumbing services in Oak Forest, Chicago IL and surrounding areas. Our techs are NATE certified. today!.A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper. Blast refers to the combustion air being “forced” or supplied above atmospheric pressure..