When summer hits hard in Boca Raton, FL, you want to feel confident that your air conditioning unit is going to keep you cool when you need it most. Unfortunately, you aren't likely to discover a broken ac unit until you come home from work to find that your home is a balmy ninety-five degrees. Here are a few reasons why your ac unit might not be working correctly.

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1. Blown Fuse

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If you've been running your ac unit on full blast or if it's older, you can blow the fuse connected to your thermostat. If this happens, you have a broken ac unit, because this is not the type of thing that you can fix without training. A qualified HVAC technician should be the one to replace it.

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2. Disconnected Switch

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There are two disconnect switches on your ac unit. One reason it might not be working is because one or both of those switches was flipped. This was likely by accident, and it's an easy fix, so check that the switches are "on" before you panic.

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3. Old Parts

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Air conditioning units don't last forever. In an older model, the capacitors could have died which will require replacement by a professional.

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4. Dirty Components

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Regular AC system maintenance is important for the proper functioning of your ac unit. There are two sets of coils—on the inside and the outside of your unit. If these get dirty, your system won't be very efficient. Similarly, if you aren't maintaining your filter, your unit won't work as well.

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5. Dead Batteries

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Sometimes the easiest solution is all you need. Double check that your thermostat batteries aren't dead, and that the thermostat is set to cool. Troubleshooting these two issues might save you a repair bill.

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If it seems like a broken ac unit is going to ruin your day, check for the problems that you can manage, and then trust the final repair to a certified professional.