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As the heat increases during the summer and you run your air conditioning system more and more often, you might begin to notice parts of your house are warmer than you expect. Some rooms are comfortable, but others are turning into hot spots. If this is a new occurrence, it’s often a warning sign you have an air conditioner that needs serious repair work—or may need to be replaced.
Years ago on our blog, we warned customers about the dangers of purchasing HVAC equipment online. There are plenty of reasons for this, such as getting a system with a voided warranty. A common item people purchase on their own is high-tech thermostats, thinking they can’t go wrong with basic climate controls. Unfortunately, a mismatched HVAC system and thermostat can end up damaging the HVAC system.
But the most important reason to never purchase HVAC equipment online is the issue of sizing. Unless you’re a professional HVAC technician, you won’t know how to properly size a new air conditioner to work correctly for your house. Sizing must be precise. A system that’s too large or too small means years of trouble from an AC that never seems to work right.
When you’re enjoying a comfortable summer day inside your home with the AC sending around cooled air, the last thing you want to hear is the fan for the air conditioner shut down, leading to all the air from the vents vanishing. Or to have the air from the vents change to room temperature. Both of these are examples of what occurs when either the indoor or outdoor fan stops working.
The indoor fan does the job of pushing air through the evaporator coil to cool it down and then into the ductwork. The outdoor fan is responsible for moving air across the condenser coil to release heat and then exhaust it. If the indoor fan breaks–no air in the vents. If the outdoor fan breaks–no cooling indoors.
What causes this to happen? Here are the five most common causes.
