Why is my air conditioner running but not getting cooler?

When your air conditioner is running but not cooling properly, it's usually due to one of several common issues we see in Lynchburg homes. The most frequent culprit is a dirty or clogged air filter, which restricts airflow and forces your system to work harder while delivering less cooling. Other common causes include refrigerant leaks, thermostat problems, or blocked ductwork. Each of these issues prevents your system from properly removing heat from your home, leaving you with warm air circulation instead of the cooling relief you expect.

How can I tell if my AC is low on refrigerant?

If your air conditioner is low on refrigerant, you'll notice some telltale signs. The air coming from your vents will feel cool but never quite cold enough to make your home comfortable. You might hear hissing sounds near your outdoor unit, which indicates a refrigerant leak. Ice forming on refrigerant lines is another clear indicator of a refrigerant issue. You'll also likely see higher than normal electric bills as your system runs constantly trying to reach the set temperature. I once visited a home in Ivy Hill where the homeowner had been refilling refrigerant every summer for years without addressing the underlying leak – a costly and inefficient approach.

What is the first thing to check when the AC stops working?

Before calling a professional, check your air filter – it's the most common and easiest issue to fix. Hold it up to a light, and if you can't see through it, replace it immediately. Next, verify that your outdoor unit has power by checking your circuit breakers. Summer thunderstorms in Lynchburg often trip breakers, and many homeowners don't realize their outdoor unit isn't receiving power. Also ensure your outdoor condenser unit has proper clearance (at least 2 feet on all sides) and isn't blocked by vegetation or debris that could be restricting airflow.

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