Zark Heating & Cooling is a trusted heating contractor operating in Mokena, IL. Since 2008, we have been offering high-quality residential and commercial HVAC services. Our furnace company caters to most, if not all, types of heating and cooling systems and carry a wide range of best-in-line thermostats, evaporator coils, packaged systems and more. Wintertime in Mokena county can bring chilly air all day long. Stay comfortable during these inordinately low temperatures by having your HVAC system serviced today!