The comfort level that today’s cars provide their occupants would have been unheard of and unachievable in the cars of just a few years ago. The ability to cool or heat the driver and their passenger with varied temperatures is getting more complex with each new model produced. The heater boxes of today’s cars contain computer controlled solenoids, switches, sensors to change the temperature, doors moved to send air to different areas of the interior, and automatic sensors to maintain a desired setting. These operations can be controlled electronically, manually (cable), or with vacuum, or even a combination of all three. Coolant integrity is key in preventing the requirement of replacing a heater core in this complex system. Phobia Auto can inspect, recommend, and service these systems to keep you driving in the comfort level you desire.