The absolute most important thing that a homeowner can do to extend the life of their air conditioning and heating equipment is to change the air conditioning filter. In the summer, an extremely dirty air conditioning filter can cause your air conditioning system to freeze up. The evaporator coil freezes due to lack of air flow. How can you possibly cool your house without air flow? In the winter, a dirty air filter can actually cause your heating system to shut down. The lack of air flow causes the high limit switch to turn off the furnace because of the excessive heat. Again, with no air flow how can you heat your home? Both situations can cause an unnecessary service call.
When your home has trouble heating and cooling do to lack of air flow it causes the equipment to run excessively. This puts a lot of wear and tear on the air conditioning and heating equipment. Would you like to purchase new air conditioning equipment 5 years before you should have to? Of course not, air conditioning equipment is expensive. Who wants to buy a new air conditioner if the old one could be working just fine if the air filter was changed regularly? If you do need a new air conditioner check out the Lennox product line.
High utility bills are another result of dirty air filters. As your air conditioner struggles to force air through that dirty filter, it continues to run and run. Air conditioners commonly consume 60-70 percent of the utility bill. If your air conditioner is operating needlessly due to a dirty filter, the percentage will increase. Additionally, a dirty air filter leads to a dirty evaporator coil. If your evaporator coil becomes dirty it can be expensive to clean.
How often should you change your air filter? That depends on the lifestyle that you lead. Do you have pets? If you have pets you should likely change the air filter more often. Once every month should do it. You should just examine the filter when you change it. Is it filthy? You should change it more often. Does it look brand new? You can change it less. Another thing to consider is the seasons. If you live in Plano, Texas, the air conditioning system will be running a lot more in the summer. You should likely change the filter more during this time of year. Remember, filters are not that expensive, compared to an unnecessary repair. Keep your air filter clean to keep your air conditioner running efficiently.