Air Filters: How They Work and Why You Need Them
Air filters are an integral part of any HVAC system. They are the first line of defense against dust, dirt, and other airborne particles that can be hazardous to our health. But how do air filters work, and why should you have them in your home? In this blog, we’ll dive into air filters and answer all these questions.
What Are Air Filters?
Air filters are specially designed materials that help remove dust, dirt, allergens, germs, and other airborne particles from the air. The most common type of air filter is made from pleated paper or fiberglass material that traps particles as they pass through it. The filter is then fitted into an HVAC system's return ducts or intake vents, where it can capture particles before they enter the system.
How Do Air Filters Work?
Air filters trap airborne particles as they pass through the filter material. The size of the holes in the filter determines how big of a particle it will capture. Smaller pores will catch smaller particles, such as dust mites, pet dander, mold spores, and pollen.
While larger pores will catch larger particles such as lint and dirt, as more dirt accumulates on the filter material, airflow is reduced, decreasing your HVAC system's efficiency over time.
How Often Should I Change My Air Filter?
Most manufacturers recommend changing your air filter every three months, depending on usage and environmental conditions. It’s also important to check your air filter regularly for signs of wear and tear, such as tears or holes in the material or an accumulation of dirt on both sides of the filter material. If you see any of these signs, it’s best to immediately replace your air filter so your HVAC system runs efficiently.
How Can Air Filters Help Reduce Allergens and Germs?
Air filters help reduce allergens and germs by trapping them before they enter your HVAC system, where they could spread throughout your home or office via the ventilation ducts.
By trapping these particles before they enter your living space or office building, you can greatly reduce allergy symptoms and prevent illnesses caused by airborne germs from spreading throughout the building. This is especially beneficial for those who suffer from allergies or asthma and those who are immunocompromised due to age or illness.
What Types Of Air Filters Are Available?
Different air filters range from disposable fiberglass models to reusable pleated paper models with built-in electrostatic technology for maximum filtration efficiency.
Depending on what kind of environment you live in, like a dusty urban area or a smokey rural area, consider investing in a higher quality filter with a higher MERV rating than standard disposable models typically offer.
These higher-quality filters offer more protection against airborne allergens while allowing adequate airflow through your HVAC system without sacrificing energy efficiency levels over time.