Air conditioner not cooling house

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How would you feel if your air conditioner fails to deliver cold air into your house?  Frustrating and probably even irritating, right?  Well, for most people, they would immediately jump to the conclusion that it is a lack of refrigerant causing the problem.  Guess what, it is not always the refrigerant’s fault.

When the air conditioner not cooling house, it is time to call in professional help to get to the root of the problem.  Here are some possible areas of concern that you should focus on.

Air conditioner not cooling house

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Thermostat Settings

In many instances, when an air conditioner fails to blow cold air it has something to do with the thermostat settings.  Sometimes the settings are accidentally changed, for example if it has been moved to the heat setting, there is no way that it will deliver cold air.

Check the fan settings as well to make sure that it is in the right position.  If the fan is set to on it will continue to blow air into the house even if it is not getting colder.  Because there is no cold air produced, it would seem logical that the unit is low on refrigerant, which is not really the case.  Put the thermostat in auto mode to make the unit blow cold air only.

Air conditioner not cooling house

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Outdoor Unit

The outdoor unit of your air conditioner should always be clean to ensure that it does not affect the cold air delivery system.  A dirty outdoor unit will obviously impact how the rest of your air conditioner functions.  The outdoor unit should be cleaned once a year at the very least.

Visually check that there are no physical obstructions to the outdoor unit like bushes, grass, or tree branches for example.  The obstructions can prevent the refrigerant from effectively cooling the air that is delivered into your house.  When cleaning the outdoor unit use a water sprayer or to be on the safe side, have a professional air conditioning technician do the cooling to have it checked as well.

Air conditioner not cooling house

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Electrical Panel

Since the air conditioner runs on electricity, any problem with its main electrical panel or any of its secondary circuits will eventually affect its cold air delivery system.  Although a blown fuse or tripped breaker may stop the unit’s operation completely, more subtle electrical problems can affect how cold air is produced by the unit.  Have a professional check it immediately for your safety.

Air conditioner not cooling house

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Air Filters

Having a clean air filter is critical to ensuring that your air conditioner continuous to deliver cold air into your house.  The dirt of the air filter blocks the airflow return making it more difficult the cold air back into your house.  This is why it is important to have the air filter replaced or cleaned regularly.

Air conditioner not cooling house

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Thermostat Sensor

Aside from the thermostat settings, you also need to consider the thermostat sensor as a potential source of the problem why your air conditioner is not blowing cold air.  Because this is located inside the unit, it is important to have a professional check it to make sure it has not been knocked out of position.  When not functioning properly it fails to accurately measure the air temperature from the evaporative coil resulting in erratic operation.

Air conditioner not cooling house

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Leaking Refrigerant

And the most common and well known cause for an air conditioner not cooling a house is the refrigerant leak.  It is important to point out that adding more refrigerant is not the right solution.  Professional air conditioner technicians first have to fix the leak and test it before the system is recharged with the right amount of refrigerant.  Maintaining the proper level of refrigerant is best for the air conditioner unit.

Now that you know that when an air conditioner fails to cool a house it is not always because of the refrigerant.  Always keep your unit in good working condition by contacting a professional technician to have it checked regularly to save you money.