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5 Little-Known Ways That Dirty Air Filters Can Ruin Your Life


Changing your home's air filters is a simple, five-minute, dirt-cheap task. Unfortunately, many of us put off filter replacement for months (if we ever get around to it at all). Here's the real cost behind ignoring one of your home's most fundamental needs...



Home air filters; they're relatively small, they're kind of flimsy looking and they're typically dirt-cheap.

They're also capable of single-handedly sending your furnace to an early grave - if you don't replace them every one to three months.

Your house is unarguably the biggest financial investment you'll ever make. And air filters, simply put, work in partnership with your house's heating and cooling system to keep it running smoothly and efficiently. Why not protect and preserve the costly systems that heat and cool your home, and keep your family comfortable during unbearably hot summers and blistering cold winters? Changing your home's air filter is one of the simplest, yet most powerfully effective ways to do just that. It only takes a few minutes, and the positive impacts are far-reaching: to your heating and cooling system's performance, to your energy bills and to the air you breathe.

But first, you need to understand what makes this simple task so vital to your home's tip-top performance - and the unfortunate fallout if you ignore it.

Since few homeowners know the real damage lurking behind dirty, clogged air filters, we've put together the top five ways in which they can ruin your home, your wallet and even your health:

An A/C system's inefficient energy consumption means sky-high energy bills for you

Your central air conditioning depends on the continual recirculation of air. When that airflow is impeded by a dirty or clogged air filter, it means your system has to struggle much harder to cool your house. The harder the system has to work to pull air throughout your home, the more energy it requires and the higher your energy bills will be. This inefficiency intensifies as the filter becomes increasingly clogged. Simply put, anytime your system is pushed to work harder, it's costing you dearly (PLUS, you're getting less air for the money).

From frozen coils to mold, mildew and bacteria growth

If your air filter gets too congested during the summer cooling season, it may cause lack of airflow to the evaporator or cooling coils. This lack of adequate airflow causes condensation (that is normally produced during the cooling process) to freeze. Frost buildup on coils or fans make it more difficult for the unit to remove heat from the air, cool your home, and may even result in the ultimate headache and financial disaster: your air conditioning unit's total break down.

For A/C and heat pump systems, a clogged air filter can also cause the evaporator coil to get caked with dirt, mold or bacteria. This constrains the critical heat exchange process, making your A/C or heat pump system unable to effectively control indoor climate or remove proper amounts of humidity. The evaporator coil becomes like a petri dish, providing the perfect place for microorganisms to multiply.

Reduced airflow, causing the blower fan to work harder

Blower fans are designed to push air through the filter. If the filter becomes too clogged with dust, dander and debris, then the blower has to struggle harder to pass the air through the blocked filter. Just as in point number one, the struggle raises energy usage, which results in a higher utility bill. With reduced airflow, there's a chance you'll experience inconsistent room temperatures (hot and cold spots) throughout your home.

Ultimately the blower fan motor can burn out, resulting in overheating and system collapse (as we'll explain in point number five...wait for it!).

Poor air quality for you and your family

If the air filter is dirty, you can bet that the air you breathe is dirty too. One of the purposes of an air filter is to filter out all microscopic particles like dust, pollen, pet dander, bacteria, plant and mold spores, and even smoke. But, a blocked filter continuously recirculates those particles back into the home, causing you and your family any number of health-related symptoms, including headaches, fatigue, cold-like symptoms that don't ever seem to go away and chronic allergies. If you own pets, the indoor air quality will be even more miserable with a clogged filter.

Furnace failure

All of this undue strain on your HVAC, explained in points one through four above, can cause this very complex, very expensive system to stop working altogether. Basically, an overtaxed air blower may give out entirely, causing the whole system to fail and costing you thousands of dollars for repair or replacement. Spending $7 on an air filter doesn't sound so bad now, does it?

Given the money you've already invested in your home, not to mention the priority you place on your health, failing to change your air filters regularly just doesn't make sense. It takes minutes, it doesn't cost a ton of money, and (with less sniffles, sneezing and congestion) your family and pets will thank you for it.

As a best practice, high quality air filters typically require replacement once every three months. If you have multiple indoor pets or many people living in your home, however, you may need to change the filter more frequently, such as once monthly.

The problem is this: you dread driving to the big box home improvement stores just to buy air filter replacements. We don't blame you. Why not let us bring the filters to you? With options as low as $5.89 and convenient free shipping, you have no excuse NOT to keep your home's HVAC system performing in triple-A condition and to keep your family healthy, comfortable and breathing easily. Search for your air filter's size and get it delivered fast - and free - by clicking here.

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How to change your air filter