Changing your HVAC filter on a regular basis is absolutely imperative. The majority of HVAC filters need to be replaced every 30-90 days, but you should check your manufacturer’s guide to make sure you’re doing it often enough. Summertime is especially important, as you don’t want a clogged filter to reduce efficiency and send your costs soaring.
Signs It’s Time to Replace a Dirty Air Filter
Once your air filter becomes overly dirty or clogged, it will begin to exhibit certain telltale signs. Changing your filter before these indicators become a problem will help your HVAC system work more efficiently.
Reduction in Airflow
Has your HVAC unit begun to stay on for much longer than usual? One common cause is a dirty air filter impeding airflow and, therefore, your unit has to work harder to reach your desired temperature. Other issues that may arise include uneven temperatures, which is indicated by some rooms being colder or hotter than the rest.
Allergy Symptoms Become Worse
If your eyes are itching, you’ve been sneezing and/or you’ve been coughing more than usual lately, it could be caused by a dirty air filter. Dirt and dust will build up in faster quantities due to your dirty air filter being unable to handle normal things such as pet dander, pollen, or dust.
Not only can allergy symptoms worsen, but it may also worsen asthma symptoms as well. If you or a family member struggles with allergies or asthma, ensure you always change your air filter in a timely manner.
Increased Energy Bills
You may experience unexpected spikes in your energy usage if you’ve got an air filter that’s restricting airflow. For example, having a dirty air filter can lead to higher energy bills because it’s unable to work as efficiently.
Increased Dirt and Dust
Surfaces around your house, including shelves and furniture, may become dustier than usual. Another area that will develop excessive dust or dirt is around your air vents. If you’ve got a dirty air filter, it won’t even matter if you clean your vents on a regular basis, which makes regularly changing your air filter a must.
Your HVAC System Has Overheated
Once your HVAC system becomes overheated, it’s imperative to shut it off and take steps to remedy the problem. In the case of an air filter, this can be done by simply changing the filter. If you don’t, though, your HVAC unit will be forced to work much harder than normal.
Odd Noises From Your HVAC Unit
Odd noises such as rattling or humming may begin coming from your HVAC unit if it has a dirty air filter. If, however, you’ve replaced the air filter and the noises haven’t stopped, you could be facing a refrigerant leak, loose parts or even a mechanical failure. Each of these can quickly become a big issue, so be sure you contact our professional Memphis-area team right away.
Other Factors to Consider
There are a few additional factors that can change how often you should replace your air filter, including:
- Filter type – Basic fiberglass filters may be cheaper than high-quality pleated filters, but you’ll also need more frequent replacements.
- Pets – The more pets you have, the more often you’ll need to change your air filter.
- System usage – If you use your HVAC more frequently than normal, you can expect to change your filter more often.
- Allergies – Having allergies means staying on top of air filter changes. Otherwise, your symptoms are likely to become worse.
More on Air Filter Styles
In a side-by-side comparison, it’s usually better to purchase a more expensive air filter. However, be careful about buying HEPA filters, which can become damaged by exposure to moisture, mishandling, etc. Additionally, if the Minimum Efficiency Reporting Value (MERV) is too high, you might suffer from restricted airflow.
Fiberglass Filter
Captures large particles such as lint or dust. Although fiberglass is the most affordable option, it may not offer enough filtration for your home.
Pleated Filter
Pleated filters are a step above fiberglass as they can capture smaller particles. They also offer a good balance between airflow and filtration.
HEPA Filter
HEPA filters offer the highest possible level of filtration. Although HEPA can capture bacteria, pollen and dust, it could also restrict airflow.
Washable Filter
These offer the convenience of washing and reusing your filter, rather than replacing it. However, it might not be as effective at filtering out small particles.
Choose Infinity for HVAC Maintenance
When you need your air conditioning looked at, Infinity Heating and Air Conditioning can help. We offer extensive HVAC services, including AC repair, replacement, and installation, as well as ductless systems. Our Christian-based organization has been taking care of HVAC systems throughout the Memphis area for 11+ years. Reach out to Infinity Heating and Air Conditioning today!
