Common Air Conditioning Problems Common Air Conditioning Problems Air conditioners can fail at any time without warning. If you live in a climate that’s as hot and humid as Atlanta’s, you are asking a lot of your air conditioner!  You probably know since living in this warm climate that any air conditioner outages can result in significant discomfort rather quickly. Many air conditioning problems are a result of insufficient maintenance.  The easiest repair is one that’s avoided altogether by keeping up on regular maintenance check-ups.  In fact, if you haven’t been keeping up on your maintenance and notice your air conditioner starting to slack, a maintenance check-up may be just what you need to get your air conditioner back up to speed.  Some common problems homeowners experience that go beyond regular maintenance and should have checked out include: the compressor failing to turn on, the air not coming out cool enough, low airflow, and leaks. Below are some ways you can diagnose air conditioning problems, descriptions of some common problems your air conditioning system may experience, and some special issues you should know about the refrigerant (freon) in your system.

Ways to diagnose a problem: Check fuse box or circuit breaker.  First thing to do if your air conditioner is not functioning properly is to check the fuse box or circuit breaker that services the unit.  The fuse may need to be replaced or the circuit breaker reset. Air conditioner turns on and off frequently.  The compressor and fan controls may be worn out. Unit turning on but not cooling.  If your unit is turning on, but the air isn’t cooling efficiently, your refrigerant may be low.  air conditioner units not windowYou may also need to clean off the evaporator or condenser coils by brushing them off or vacuuming them.  how much units an ac consumeIn addition, the filter may need to be replaced.  sizing ac unit for room

Clogged, dirty filters block normal airflow and reduce a system’s efficiency considerably.Dirty air filters and/or closed or obstructed supply-air and return-air grilles may cause insufficient airflow through your system.These are usually associated with low refrigerant or a clogged drain pipe.  Clogs can be fixed by clearing out the clogged pipe within the evaporator coil pan.  Leaks should always be handled by a professional HVAC contractor. Common air conditioning problems:If your air conditioner is low on refrigerant, either it was undercharged at installation or it leaks.  If it leaks, simply adding refrigerant is not a solution.  A trained AC technician should fix any leak, test the repair and then charge the system with the correct amount of refrigerant.  Remember that the performance and efficiency of your air conditioner is greatest when the refrigerant charge exactly matches the manufacturer’s specification, and is neither undercharged nor overcharged.  In addition, refrigerant leaks can be harmful to the environment.

If you allow filters and air conditioning coils to become dirty, the air conditioner will not work properly, and the compressor or fans are likely to fail prematurely. Electronic Controls and Sensors Failure.  The electronic controls and sensor that cause your air conditioner, fan and condenser to kick off and on properly are often the first components to go.  Sometimes these sensors are merely knocked out of position causing the air conditioner to cycle constantly or behave erratically.  Fortunately, problems of this nature are easy to address compared to larger mechanical failures, and won’t cost you nearly as much. Fan and Condenser Failure.  Fan and condenser failure, on the other hand, can add up to some pretty pricey repairs.  Replacing burnt-out fan motors is usually worth the expense in order to get your air conditioner up and running again, though a failed condenser can be a different story.  A new condenser is the most expensive AC repair in the books, and depending on the age and efficiency of your current air conditioner, it might be a smarter investment to just upgrade to a newer unit.

Special Note About Air Conditioner Refrigerant (Freon): Contrary to popular belief, air conditioners do not consume refrigerant (freon) as a car consumes oil, so under ideal conditions it would never need changing or filling.  Therefore, a low freon level indicates a leak which should be repaired before adding more.  While most new system connections are welded to minimize leaks, many older units (8+ years) were connected with mechanical flared fittings, which can vibrate loose over the years, causing leaks. Problems with freon leaks: Low freon levels reduce efficiency of the air conditioner. They can freeze the evaporator coil, causing it to literally ice up. Freon is an Environmental Protection Agency (EPA) controlled substance, deemed hazardous if released into the environment. The heart of the unit is the compressor, which is cooled by the refrigerant.  Over time, low freon levels can cause overheating and premature failure of the compressor, often requiring complete replacement of the compressor or the entire condensing unit. 

As mentioned earlier this is a very expensive proposition. Always contact a HVAC professional when dealing with refrigerant (freon). Join our email newsletter Get up-to-date current news, promotions and industry tips. Didn't find what you're looking for?You’ve seen thermostats for as long as you can remember. But you don’t even know what these 2 settings do or what makes them different.All you know is that you’ve been told to keep your thermostat set on “Auto”.Because the “On” will cost you more money to use. Before we get into why, we need to show you how they’re different.These 2 settings refer to how your air conditioner’s fan will run. The fan is located in the inside unit and helps distribute the conditioned air throughout your home.“Auto” means that the fan automatically works ONLY when the air is being heated or cooled. So once your home reaches the temperature set on the thermostat, the fan stops.“On” means the fan is on  24/7, even when the air isn’t being heated or cooled.

Increases electric bill—Running the fan 24/7 could add about another $50 to your electric bill each month.Quickly clogs your air filter—The fan will continually pull in air through your return vents, right where your air filter is. So it’s going to nab way more dust over a shorter period of time. That means you will have to change your air filter more often.Can make you chilly in winter—The air coming through your vents when the furnace is off will feel chilly.Blower needs more frequent maintenance—Using the fan more often means it’ll break down more often.OK, so maybe we’re being harsh on the “On” setting. While you shouldn’t use it as your “go to”  fan setting, it can give you some benefits:Makes you more comfortable—The fan will circulate air more evenly throughout your home, making you more comfortable.Can help asthma and allergy sufferers—Do you have a high efficiency HEPA filter? Running the fan more often means that filter is catching more airborne pollutants that agitate allergy and asthma symptoms.