Air conditioner blows hot or warm on one side-free car AC help

Car air conditioning systems that are warm on one side and cold on the other usually have one of two problems. This short car repair article shares his experience gained from master car technicians working on air conditioners in Florida for decades. This free information is equally useful to consumers who know the value of providing information about dealings with car repair shops, as well as do-it-yourselfers. If the air on one side is warm, read the free car A / C help.

Vehicles that typically have a dash that is cold on one side and warm on the other are usually equipped with a dual-zone climate control system. The dual zone system allows the driver and passengers in the passenger seat to adjust their temperatures to comfortable levels. There are two common causes of temperature difference when both sides are set to the coldest setting. Let’s cover the first cause.

Low refrigerant

Automotive air conditioners using 134A usually retain a small amount of refrigerant compared to older vehicles using R12. Today’s car and truck air conditioners are much more efficient than older counter parts. The fact that the 134A system uses less freon means that leaks can quickly affect the performance of the HVAC (heating, ventilation and air conditioning) system. Due to the dual AC system design, low refrigerant is the main cause of the rapid temperature difference from one side to the other side of the dash. Even an experienced auto mechanic may be surprised to find that just 4-8 ounces of undercharging at 134A can make such a big difference. The temperature from the left vent to the right vent can vary by 10 to 20 degrees. The easiest way is to fill the system or, moreover, remove all Freons and recharge the unit with the amount specified by the factory. In most cases, after Freon is properly charged in the car, the temperature will be just as cold on both sides!

What if it didn’t help? Read on to learn about other possible causes of the problem.

HVAC door problem

Dual zones that supply different temperatures from the vents on both sides of the dash are achieved through the use of small doors inside the HVAC housing. By controlling the door, the temperature of the left and right air can be adjusted to the desired comfort level. In many cases, the motor (or actuator) that controls the door on either side can fail, or the door itself can break and cool down. Because it will be adjusted. Diagnosis of this problem is more complex and may be the subject of another article. thank you for reading. Hopefully, the free information provided here will help solve the problem of “AC blowing hot or warm from one side of the dash”.