How Often Should You Change Your HVAC Filters?
A clean filter is an important feature of a well-functioning HVAC system. This simple filter can impact the lifespan of your equipment, your monthly utility bills, and your indoor air quality. If you forget to change your filter, you can experience a reduction in airflow, which has the potential to cause substantial problems with your system. Strain on interior components can lead to expensive repairs. Allow our team at Crystal Blue Plumbing Heating & Air in Sacramento, CA to educate you on establishing a schedule for changing your filter. We’ll consider the type of HVAC system you have, your budget, indoor air quality needs, and much more.
What Is the Purpose of an HVAC Filter?
HVAC filters don’t just collect dust. They trap several types of particulate matter, protecting your heating and cooling equipment as well as your indoor air quality. You want to avoid debris from accumulating on your interior HVAC components. Otherwise, this can lead to strain, overworking your equipment, higher energy bills, and a shorter system lifespan. You may find yourself replacing your system much sooner than you anticipated. These filters will also prevent contaminants from circulating in your home. This can help reduce allergies, asthma, and other symptoms.
How Often Should I Replace My HVAC Filter?
Typically, HVAC filters should be replaced once every 30 to 90 days. There are factors that can impact this frequency. For example, if you or someone in your home suffers from allergies, more frequent changes are beneficial.
If you’ve recently had remodeling work done in your home, it’s ideal to change your filter once the work is complete. This is because when such work is being done, it produces a considerable amount of dust, which will quickly cause the filter to become dirty. Chances are that by the time the project is completed, so much dirt and debris will be caked that it will smother the system and prevent airflow.
The number of people in your home will impact filter change frequency. The more people there are, the more dust, skin flakes, and particulate matter that is generated and circulated. The number of animals in your home will also have an impact on filter changes.
If your area experiences high levels of dust, pollen, or pollution, you’ll need to change your filter often. Even if you’re keeping your windows and doors closed, no home is completely airtight. These contaminants can sneak in through gaps and cracks.
Most filters are rated according to the minimum-efficiency reporting value scale, or MERV for short. A filter that is ideal for residential use is usually between 8 and 12 MERV. If you were to use a filter rated less than eight, it wouldn’t be very effective at trapping particulate matter. A filter that is rated above 12 is too restrictive for most residential units. Impeding proper airflow can cause system issues and inefficiencies.
Factors That Impact Frequency
There are other things to consider that can impact how frequently you change your HVAC filter. How often you run your system and the size of your home can really have an impact. Larger homes circulate more air, which means that dust will collect a whole lot quicker. Filters will reach capacity sooner. Furthermore, if you run your system year-round, you will need more frequent replacements. On the other hand, those who rarely run their systems can get away with fewer changes.
Signs It’s Time to Change Your Filter
Ideally, don’t wait until you notice these signs to change your filter. However, being aware of these issues can be key for protecting your home and HVAC system.
Reduced Airflow From Vents
If you notice that there isn’t sufficient air coming from your vents, a dirty filter may be to blame. An excess amount of debris can prevent air from flowing through the filter freely.
Visibly Dirty Surfaces
Your home may appear to be getting dusty faster than usual. Your filter may be dirty, preventing particulate matter from being trapped. More dust and debris will circulate into your living spaces and settle on surfaces. This includes the covers on vents and registers.
Changes in Energy Consumption
Monitor your monthly energy bills for a sudden and unexplained change. If you are using more energy as time goes on, ask yourself if you’ve changed your filter recently. If not, the restriction in airflow may be forcing your system to work harder to achieve your set temperature.
Stale-Smelling Air
Certain filters do a great job of improving your indoor air quality. If your indoor air smells stale, musty, or generally bad, change your HVAC filter. Pleated filters have more surface area and do a better job of trapping contaminants. If smells persist, consider using a filter with activated carbon. This filter component absorbs bad smells very well.
Not Feeling Well
If your allergies seem to be getting worse or you’re experiencing symptoms like coughing, fatigue, shortness of breath, brain fog, or headaches, change your filter. Your indoor air quality may be making you feel unwell.
There are many studies that link poor air quality to illness. Not addressing air quality issues can lead to more severe problems, such as lung damage and heart problems.
Upgrading Your Filtration
If you’re noticing that you must frequently change your HVAC filter but aren’t seeing enough benefits when it comes to indoor air quality, consider an upgrade. Installing a whole-home air purification unit onto your HVAC system can have a profound impact on indoor air quality. Just be sure to keep up with changing the filter in your unit. Our team can inspect your filtration equipment and perform furnace tune-ups and AC maintenance once per year. This will keep everything working efficiently and effectively.
Make sure you’re keeping your relative humidity level between 35% and 50%. High levels of humidity allow more particulate matter to circulate in the air. This can also promote the growth of mold, which impacts your indoor air quality. A whole-home dehumidifier can remove moisture, and a whole-home humidifier can add it back in. Routine maintenance will ensure that your drain line is clear, further protecting your home from mold growth and other indoor air quality and structural damage concerns.
Our team at Crystal Blue Plumbing Heating & Air can help you with the process of determining when to change your furnace filter. We can also help you choose the right filter for your needs. Our services also include routine HVAC maintenance, repairs, and new installations. The goal is to help you achieve exceptional comfort as well as healthy indoor air quality.
Contact us at Crystal Blue Plumbing Heating & Air for indoor air quality and filter support in Sacramento today.






