Over time, the air filter draws in pet dander, dust, dirt, and other contaminants. That's its job. However, if the fibers get too clogged with debris, the HVAC system can't pull air through the filter. Eventually, this can cause the system to shut down.
How You Can Maintain Your AC Filter. While dirty air filters can stop an AC from working, there are many ways to keep your air conditioner well taken care of and working efficiently for a longer time.
A clogged/dirty filter will not allow your air conditioning system to work properly due to lack of air flow through the evaporative coil. Also, this will cause the evaporative coil to freeze which can lead to water dripping into your home from the coil due an overflow of the condensation drain system.
Is my AC not working because of the filter? Potentially, yes. While there are a whole host of issues that could cause problems with your air conditioning system, a dirty air filter should be the first thing to check if your central air conditioning unit isn't working as properly as it should.
If there is a clog in the drain unit of your air conditioner, it will create a mess for you. The operation of your AC will remain the same, but the drain pan will overflow, and float will switch the AC off. This condition can also cause some damage to your AC, but it will not affect its cooling capacity.
Symptoms of a clogged air conditioner drain line
Water damage near the indoor unit, including rust on the bottom of the unit. Musty smell when the AC is running. Heat pump/AC not cooling house. Heat pump/AC not turning on.
However, when your AC drain line becomes blocked and is unable to properly drain moisture, your AC will likely stop working and you'll need to call Wagner for AC repair.
Increased Energy Consumption
A dirty filter forces your AC system to work harder to maintain a cool temperature, leading to an increase in energy consumption. If your utility bills have spiked without any apparent reason, a thorough cleaning of your filter might be all it takes to rectify the issue.
The short answer: You can get away with running your AC without a filter for a short period of time. However, doing so for longer than 6-8 hours can hurt your system and decrease your home's indoor air quality.
If your filter is designed to be washed, hold it under lukewarm running water to rinse away residual dust. For a deeper clean, soak the filter in a basin with warm water and a mild detergent for about 10-15 minutes. Agitate the water gently to release any embedded dirt.
How Often Do I Need to Change Out My Air Filter? Generally, most air filter manufacturers and HVAC companies recommend changing your air filter every 90 days, or 3 months. That can change based on where your home is located (ex. dusty, dry climates), if you have any pets, and the age of your system and equipment.
While there are a number of commercially available coil cleaning solutions on the market, air conditioner coils can be cleaned with a solution of a mild household detergent and water. The detergent and water mix is applied to the coil using a low-pressure sprayer.
After replacing the filter, you should wait at least 12 hours before running the system. If the AC is still not blowing cold air, it could signify that you have a refrigerant leak, a damaged condenser, or your entire mechanical system needs maintenance.
Check the thermostat
You should check if it's been set to the correct temperature and also make sure it's set to “cool”. If the AC settings are not right, it won't turn on. You can also check if the batteries in the thermostat are fresh and replace them if needed.
It may seem unlikely that a clogged filter could cause the entire system to freeze up and stop working, but it happens more than you might think. A lack of airflow caused by an extremely dirty air filter can cause evaporator coils to freeze.
Clogged filters will not properly filter debris from entering the system, damaging internal components. They also cause accelerated wear and tear of parts such as the blower motor, fans, and compressor.
When your car is idling or stationary, you should feel and hear the smooth vibrations of an efficient engine. If you notice unusual noises, in particular a coughing, popping or spitting noise, it suggests that the engine isn't getting enough airflow, which means your air filter needs to be replaced.
Over time, the air filter can become clogged with dirt and debris, restricting the airflow. This restriction can disrupt the proper air-fuel mixture, leading to incomplete combustion and the engine stalling. In addition to air filter issues, problems with the throttle body can also contribute to car stalling.
When the air filter becomes clogged with dust, dirt, and debris, it restricts the airflow passing through the system. This restriction causes the AC unit to work harder, leading to decreased efficiency and reduced cooling capacity. Restricted airflow can even cause the coils to freeze in your outdoor or window unit.
First, check your filters and coils for dirt and debris that may be impeding airflow. Once you've cleaned the filters and coils, run the air conditioner with just the fan so that the ice accumulation can melt off. If the AC still doesn't blow cold air, it could be that refrigerant levels are too low.
For example, if you use fiberglass filters, have pets, and run your AC day and night, you should probably change it every month. However, if you don't have pets, use high-quality filters, and only run your AC for a few hours a day, you may be able to get away with going six months between changes.
AC is Producing Warm Air
One of the surefire signs of a clogged refrigerant line is if you notice the AC producing warm air when you expect cold air. The warm air is caused by a problem with the proper circulation of the refrigerant fluid, which is instrumental in cooling the air.
It will kill any bacteria or mold present in your drain line, just like vinegar will. Pour one cup of bleach down your drain line every month to help keep it free from clogs. One cup of bleach is the cheapest and easiest way to unclog the drain line in your AC.
If your AC takes too long to cool a room, it could be due to several factors. One common reason is a dirty or clogged air filter, which restricts airflow and reduces the system's efficiency. Low refrigerant levels can also cause the AC to struggle in reaching the desired temperature, as it affects the cooling process.