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    7 Common Reasons Why Your Air Conditioner Is Not Cooling Properly

    Aug 6, 2019 | Blog

    If your air conditioner breaks down completely, there’s obviously a major issue that needs to be taken care of by a professional. However, a slightly more perplexing problem (and one we usually are unaware of) is when your air conditioner is working but the air is not cold enough or working harder than it should. Today we’re going to talk about why your air conditioner might not be cooling properly, and what you can do to take care of the problem!

    7 Common Reasons Why Your Air Conditioner Is Not Cooling Properly


    1. Dirty cooling coils

    Your air conditioner has a set of indoor coils that absorb heat from your home’s air, as well as a set of outdoor coils that transfer heat from your home to the outdoors. If either of these coils have dirt or dust build up on them it becomes much more difficult for heat to transfer between the coils and the air that’s blown over them. This can greatly reduce your system’s ability to remove heat from your home and the air that comes out of your vents will be warmer than it should be.

    2. Refrigerant leak

    Refrigerant is what flows through your air conditioner coils and actually moves the heat from inside your home to the outside condenser unit. If your system has a refrigerant leak it will not be able to adequately move heat out of your house. Your air conditioner will run, but will not provide optimal comfort.

    3. Blocked condenser unit

    Condenser units are located outside, where they can be blocked by plants, bushes and other shrubberies. If your condenser unit is obstructed, it will not be able to adequately release heat from the condenser coils. This means that the heat that is removed from your home will not be released properly.

    4. Dirty air filter

    When your air filter is dirty, the amount of air that is able to blow over your evaporator coils is restricted. When this happens, much of the warm air that your air conditioner pulls from your home’s air will not actually be cooled. Lack of airflow can also cause the indoor coil to ice up completely causing no cooling. Plan ahead and order a box of filters for quick and easy replacement.

    5. Compressor problems

    Your air conditioner’s compressor is responsible for making sure the refrigerant is at optimal pressure, making it one of the most important parts of your unit. Without it, your system would not be able to absorb heat from the rooms in your home and transfer it outside. If it starts to malfunction, your air conditioner has no chance of cooling your home properly.

    6. Old system

    When an air conditioner reaches the end of its useful life, there will be an increase in parts failure and associated cost to keep running. This is just a natural fact of an air conditioner’s lifespan, which is why it’s important to replace your system when it is no longer able to perform effectively. Plan ahead and schedule an in home consultation to assess future equipment replacement options.

    7. Improper thermostat settings

    If your thermostat’s fan setting is set to “on” your air handler will blow air even when your system isn’t in a cooling cycle. As a result, some of the air that comes out of your vents will feel warm. You can adjust this by switching the fan setting to “auto” instead. Another setting to check is whether your system is in “heat” or “cool” mode. Your air conditioner will only be turned on if your thermostat is set to “cool.”

    Keep Your Air Conditioner Running Strong With Annual Tune-Ups

    The best way to avoid most of the problems above is to schedule an annual tune-up with Lifetime Heating and Air Conditioning. During your tune-up, we’ll inspect your system for problems that would impair its performance and perform a full system cleaning! Not only will this help prevent cooling issues during the summer, but will also keep your system running efficiently and extend its operating life.
    If you have any questions about your air conditioner not cooling, or if you’d like a cooling system serviced or installed in your home, call Lifetime Heating and Air Conditioning, Western Washington’s only contractor to offer a Lifetime Warranty!
    Call us today at (425) 553-4328 or visit us online at www.lifetimeheating.com today!