Our home and our business are located in South Texas where the cost of cooling can be quite expensive. The summer of 2009 broke all of the heat records since records have been kept with more than 59 days with temperatures over 100 degrees, many of which were 103 or better. With temperatures above 90 degrees until midnight on some days the air conditioning system was working overtime to try and keep up.
A good operating AC system will use refrigerant to lower the temperature of the cooling system and generate a high volume of airflow through the cooling system to keep your home cool. It is important to keep the air flowing through the central cooling system as quickly as possible to maintain a high efficiency of cooling and keep your electric bills low. A clean furnace filter is critical to both maintaining system performance and protecting your AC cooling coil, the radiator like device with small fins made from metal that transfers the cool from refrigerant to the airflow that is used to cool your home. Without a filter your AC coil would quickly become clogged with dust and your systems performance would quickly drop. With a clean filter you are allowing the maximum amount of airflow through the system but protecting the AC coil from damaging dust. A dirty AC intake filter chokes airflow from your system which requires the entire system to run longer in order to provide the same level of cool as a system with a clean filter, this is why a clean filter is so important.