If your air conditioner is running but isn't keeping your house cool, you'll want to do what you can to fix that as soon as possible. No one wants to waste energy to try to cool their house without a payoff, and no one wants to sit around in their overly hot house either. So, if your air conditioner isn't keeping your house cool, what can you do to get it working again?
Check Your Air Filter
One thing that you can do is to check your air filter. Your air filter helps to keep pollen, dirt, and other contaminants out of your house. That means that they will eventually get dirty, and as they get dirty, they will start to limit how much air is getting through them. That will actually make your air conditioner work harder because it has to have the oomph to push that air through the filter, but at the same time, less cool air is going to get through the filter, which will make your house warmer. The dirtier and nastier your air filter gets, the less cool air you are going to get. This is a relatively easy fix. All you need to do is to either rinse off your air filter regularly or replace it.
Open Your Vents
You hear all the advice about closing air vents into empty rooms so that you aren't cooling empty space, but that can be a real problem that can keep your air conditioner from cooling your house. That's because the air conditioner will stop producing as much cool air if the vents are closed. The way that the air conditioner works is that the blower pushes air out at a certain pressure. Closed vents create too much pressure in the ducts because the air is getting pushed into the closed vents and then pushed back through the ducts because it doesn't have an outlet. The blower senses that pressure and stops blowing out as much air because it thinks that it is doing its job and plenty of cool air is getting through the vents. Then, your house gets hotter because there is less cool air coming into it. As you try to get more cold air while those vents are closed, it's going to continue to happen and might even get worse.
If you have checked out all kinds of things and your house isn't getting cooler, no matter what, you should call an air conditioning service tech to have them check out your AC.
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