Why is my AC Not Cooling?

Having an air conditioner that’s not cooling is stressful for the average person. For Florida residents it’s almost unbearable. If you’re experiencing this problem, know that while there are relatively simple troubleshooting strategies that you may be able to do yourself, others may require the attention of a certified HVAC professional.

Why is my AC blowing warm air?

There are several reasons you may be experiencing this problem:

1. Your AC unit is too small. This could be an issue if you just purchased your home or unit and are turning on the AC for the first time.

For your AC to cool your home, it needs to have the right amount of BTUs for the square footage. Also consider the type of construction materials used to build your home, and the type of insulation within your roof and walls.

BTU is an acronym for British Thermal Unit and it refers to the amount of heat an AC can eliminate from the air. For each ton of heat that has to be removed from a space, an AC unit needs to have 12,000 BTUs.

You can check your AC’s BTU capacity on the label located on the condenser unit. The top portion of the label shows the model number (M/N). The BTU capacity is the three digit number after the first dash.

If you don’t have an air conditioner with the right BTU, your home will not cool properly.

2. You need to change the air filters. When was the last time you changed your air filters? If you don’t remember, they probably have a thick layer of dirt blocking the airflow and are likely causing the AC coils to freeze.

In order to know how often to change air filters, you should take into account several factors: the material the air filters are made of (the less expensive the filter, the more often you have to change it), how many people live in your home, whether you have pets, people with allergies, or smokers in your household.

3. The condensate lines are clogged. An AC works by absorbing the moisture from the air inside your home, it condensates inside the unit and is filtered outside of your home through the condensate lines.

Because the condensate line is exposed to humidity, it’s a breeding ground for mold and sludge. You can prevent this from happening by having routine AC maintenance on your air conditioner. Between visits from a technician, you can clean them with ¾ cup of distilled white vinegar.

What is a refrigerant leak?

Another (and more concerning) reason your AC is not cooling is that it may have a refrigerant leak.

Refrigerant is a high pressure gas that cools the air inside your home. Wear and tear can cause pinholes in the unit, causing this gas to leak out. Breathing refrigerant is hazardous to your health, so if you suspect this is the issue, call an HVAC company ASAP. This is an emergency.

Signs of a refrigerant leak include the following:

– Hissing sound coming from your air conditioner
– Vents are blowing warm air
– Home feels humid
– Frost buildup on the condenser unit
– Higher energy bills

If all of this information is overwhelming, simply schedule regular maintenance visits.

Call Complete Air Mechanical for AC Repair Services

At Complete Air Mechanical, we can take care of your AC installation, repair, and maintenance needs in Orange, Osceola, Seminole, and Volusia Counties. We also offer financing options.

Contact us today.