When it comes to your furnace, the air filter is a crucial component. Filters ensure proper airflow and good indoor air quality, and they should be changed at least once every three months for the best results. Here are a few signs that indicate you're overdue for a replacement, which can lead to a wide range of issues in the home. 

How to Tell It's Time for HVAC Filter Replacement

1. Your Indoor Allergies Have Gone Crazy


HVAC filters pick up all sorts of particulate matter, including allergens. Dust, pet dander, pollen, and other contaminants become trapped in the filter material, which prevents them from flowing around your home. When the filter becomes too soiled and can no longer hold new particulates, you may notice an uptick in allergy symptoms. Sneezing, coughing, and congestion are no fun, especially when they're a daily occurrence. Fortunately, the right filter can greatly limit the amount of allergens in your home with proper maintenance. 

2. Your Home Is Much Dustier

All the dust your filter would normally pick up will no longer get trapped as it flows through your HVAC system. Accordingly, you'll notice an influx of dust in your home on surfaces, floors, and in other areas. Dust is a major allergen, but it also makes your home look messy and unsanitary. Instead of increasing your cleaning duties, changing the filter will decrease dust levels and make for a more pleasant home overall. 

3. Utility Bills Are Getting More Expensive

Along with health and sanitation issues, a dirty filter can also impact your bottom line. Soiled filters block the flow of air though your heating unit, which in turn decreases efficiency. Lowered efficiency means higher utility bills, since the device must work harder just to produce the same output. If you're not sure, compare your most recent bill to one from the same time last year. If costs and usage have gone up, but you're using it the same amount, you have an efficiency problem on your hands. 


When you have questions about furnace maintenance or repairs, the technicians at A & B Heating & Air Conditioning are happy to answer them. Serving customers throughout the Tri-State area of Kentucky, Ohio, and Indiana since 1966, this team will quickly diagnose issues and offer the best possible solution, including new installations. Because they're recognized for having 100% customer satisfaction by American Standard®, you can rest assured of a job well done. Visit them online to learn more about their service or call (859) 525-0100 to schedule an appointment today.