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Why my home AC is not blowing cold air?
March 7, 2016
When your home’s air conditioner stops blowing cold air, it can be problematic and very annoying. But there is always a reason behind the breakdown.  We want to explore this common occurrence a bit further, so we decided to create a blog post briefly examining this question. Keep in mind there is a long list of possible reason for this problem, but here we are exploring some of the most frequently occurring problems our technicians find in the field on a day to day basis. The first step would be to determine if your blower motor still operates.  This is easily known by putting your hand up to any supply vent (vents that push out air into your home).
Another very common diagnosis is that of refrigerant levels in the home. If this is the case, then it’s a good bet that the levels of Freon (also known as coolant, refrigerant, etc.) in your your air conditioner are not where they should be. Occasionally, you could have an air conditioner that has too much Freon, which is causing your system to freeze up, but more than likely you do not have enough Freon circulating through your system, which is causing your air conditioner not to produce cold conditioned air to your home.
It is a common misconception that every so often, one must add a little more coolant to your system, not unlike topping of the oil in your car.  But this notion is false.  The coolant in your air conditioner system actually operates in a closed loop, meaning there is never a need to add more coolant… Unless there is a leak.Leaks are caused by holes, sometimes as small as a pinhole located anywhere where the refrigerant circulates.  The size of the hole determines how long it takes for the Freon (which is actually a gas) to slowly leak out of your system. If the leak is small, it may take years for the system to lose enough Freon to where your air conditioner is noticeably not producing enough cool air in your home.  Large holes will ensure the refrigerant  leaks out much faster.  Sometimes charging up a system, and spending hundreds of dollars to do so, is the wrong approach, as the Freon will only leak out days, sometimes weeks after it has been recharged.
It’s always important to have a professional HVAC technician determine where the leak is occurring, and how large the leak is, before regarding your system.
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