Mold, bacteria, and dust mites that live in dirty air filters can cause allergies and asthma, leading to symptoms such as shortness of breath, fatigue, dizziness, congestion, and eye irritation. As these airborne allergens build up in the filter, they can't do their job properly and allow dirt, dust, and bacteria to enter the home. Particles smaller than 10 microns, such as those mentioned above, are easily inhaled and have the potential to irritate the eyes, nose and throat and affect both the lungs and the heart. The HVAC system air cleaner performs several functions, including trapping airborne contaminants which is vital to your health.
A clogged filter reduces cooling efficiency and will aggravate allergy and asthma symptoms. Dust and debris in a household air cleaner restrict airflow, forcing the oven to strain and use more energy to heat or cool your home. A clean HVAC air filter protects your heating system from being damaged and ultimately completely failing. Studies show that a very efficient type of air filter, called a HEPA filter, can help reduce allergy or asthma symptoms.
Clean filters stop the spread of airborne viruses and mold that can have a negative impact on your family's health. A dirty air filter can spread contaminants that can cause rashes, headaches, eye irritation, sinus problems, asthma or allergy symptoms, and other health problems. The MERV rating can help you understand the effectiveness of each air filter option you encounter. Too much debris doesn't allow enough clean air to pass through, making your HVAC system work harder to heat and cool your home.
If you don't change the filter before it becomes clogged, airflow will be restricted, making it difficult for the cooling system to cool your home. If the filter becomes too clogged with dust, dander and debris, then the blower has to work harder to get air through a clogged filter.