The Mazda CX-7 Heater Core sends direct heating to the cabin and vaporizes foggy glass in the car, converting redundant engine heat to a fresh, dry, warm breeze. The Heater Core, located at the rear of the dash, has tightly wrapped aluminum tubes and fins, which receive hot coolant, and a powerful blower moves air over such a lattice before reaching the passengers. Since the chilled evaporator captures the moisture initially, the warmed air remains dry and warms the occupants, and the windshield will remain clean. The powertrain also has a slight efficiency gain during spirited climbs as the core remits some additional engine heat. All CX-7 models of 2007 to 2012 will take the same compact unit irrespective of the drivetrain, making part choice easy. Brass versions were replaced with corrosion-resistant aluminum, which reduces weight and increases thermal transfer without damaging the rock-solid reliability that Mazda crossovers are billed to have. Combine the clever choice of materials with blend doors and, on higher finishes, a small electric motor that allows each front seat to control its temperature, and you have the accuracy of climate control in competition with more expensive SUVs and Mazda care regarding driver comfort. Safety also increases as constant warm air makes defrosters effective in snow or rain to provide good visibility. Owners admire the ability of the Heater Core not to clog when flushing the cooling system on schedule, and to prolong the life of the vehicle to over 100,000 miles, which solidifies the reliability image of the vehicle. All these characteristics lead to the fact that the CX-7 is still valuable in the applied market and the reason why Mazda engineering is still trusted by families who want to have performance without sacrificing comfort.
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