If your air conditioner simply stops working, then of course you need to have it repaired. However, there are times when it's still running but may need the attention of a repair professional. Consider a few signs that your air conditioner unit needs repair even though it may still seem to be working.

1. It smells musty or moldy.

A musty or moldy smell from your air conditioner usually means a water leak somewhere in the unit, and this can lead to mold buildup in your vents. This moldy or musty smell can also get worse and very irritating to your sinuses, so it's best to have the unit inspected as soon as you notice this. You may need to have a leak patched, or there may be a problem with the condenser coil inside the unit. But a professional, like from Adams Refrigeration Co., can usually pinpoint the cause of this smell rather quickly.

2. You hear a loud thumping or bumping sound.

It's not unusual to hear a soft hum coming from your air conditioner, but if there is a loud thumping or bumping sound, this is typically a sign that a part has come loose or that there is something lodged inside the air conditioner itself. Ignoring this problem will usually lead to a part breaking off completely and doing more damage to the unit or to having whatever is lodged in the unit break something that would be very costly to repair. Have this sound checked out immediately and avoid running your air conditioner until you do.

3. Not all your rooms are being cooled equally.

Unless you have a zone thermostat installed that controls the temperature in various rooms, your air conditioner should be cooling all your rooms equally. If not, this is usually a sign that the fan or the motor itself is breaking down and not pushing the cold air into every part of the house as it should. Neglecting this problem can lead to the motor or fan breaking completely so that your unit simply does not work overall.

4. Your electric bill is higher than it should be.

If you notice that your electric bill seems very high during the summer season and isn't due to unusually warm weather or a hike in your rates, it might be because your air conditioning unit is working too hard. In turn it's using more power than it should. Rather than ignoring this problem, have a technician look at the condenser coil, the motor, and the fan to see if any of those need to be replaced or if you simply need a new, more energy-efficient model altogether.

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