It’s never good when the temperature starts to get hot, and we flip on the air conditioner, and there’s no cold air coming out! The unit sounds good, but it’s just not doing its job. Let’s take a look at what the possibilities could be.
The lack of adequate airflow is a common cause of window air conditioners not working. When everything is working right the fan will pull air over evaporator coils where it is cooled; then it’s pushed back out into the room. An old and dirty air filter can cause a clog in the airflow. If not enough air is getting thru the coils, then frost could build up which will clog things up even more. This is a very easy fix, and you’ll just have to replace the filter regularly. You may want to clean those coils while you’re in there with water and a soft brush. Be sure to unplug the unit!
For the larger HVAC systems, the filter is still very important. By keeping your filter clean, you can improve your heating and cooling system performance. Same goes here, a dirty filter hinders the airflow and makes it more difficult to circulate air and your system will work harder but not better. There will be no cold air coming out. Some people feel you can use washable, reusable air filters. But, some HVAC experts think that if the filter’s are not washed and dried properly, there’s a chance of mold growth. You should check the manual of your unit or speak with your HVAC expert.
The Fan & its Motor
If your AC is not blowing cold air, the problem could be the fan or fan motor. In a well-running air conditioner, the fan will pull air over the cold evaporator coils and then re-circulate the cold air back. It’s fairly easy to tell if it’s the fan because there won’t be any air coming out of the vents. The fan and motor are inside the main cabinet, and you’ll need to take off the front panel to check things out. At this point, you’ll want to shut off the unit. At this point, you should call an HVAC tech to take a look. They will make sure that the fan motor and it’s blades all turn smoothly and that there is no damage. If the motor runs but still no cold air, it may be defective, or it may not be getting power from the controls. Figuring out this disconnect is more complicated and should be performed by your AC repair person.
A few other problem items revolve around the thermostat. The thermostat senses the temperature of the incoming air and turns the units compressor on or off. With this, there are electronics involved, and it’s not something you’ll want to try to fix yourself unless you have experience.
Don’t let the surprise of a nonworking AC get you down. Schedule an appointment to have your unit looked at today! Catching minor problems early can help prevent major issues when it’s 120 outside! Call ADD Air, Inc (928) 768-9825