When it comes to air filters, not all are created equal. There are many different types of air filters available, and choosing the right one can make a real difference to the lifespan of your air conditioning system.
The myth
that extra surface area lets more air through is false; the central air conditioning unit doesn't have to work as hard to get air through it. At MERV 13, the highest rating you'll find on most popular residential HVAC filter sizes, you can count on the filter to stop bacteria, smoke, and other microscopic particles. The least expensive filters are made of spun fiberglass, which filters air very poorly compared to materials such as paper, cotton or polyester.An easy way to choose a replacement filter is to simply buy the same filter that you already use in your system. Be sure to install the new filter facing the correct direction. Look for arrows on the filter frame that indicate the direction of the air flow. The downside of these filters is that they require the air conditioning system to work a little harder to get air through the unit, which can cause the air conditioning system to lose efficiency sooner than expected. Household HVAC air filters are classified according to their MERV classification, and most household filters are rated between 1 and 13 (more than 13 in the case of HEPA filters).
However, some air conditioning systems have filters inside the return air ducts scattered throughout several rooms in the house. When you buy air filters online, look for places that allow you to customize the quantity to get exactly what you need. If you've ever wondered what the difference is between pleated air filters and their non-pleated counterparts, here's your answer. You may need to replace the filter more often if you have some very furry pets, for example, or if you live in an area with a lot of air pollution, such as from wildfires. Understanding the different types of home air filters is the first step to getting the best indoor air quality you deserve.
Because HEPA filters have such hermetic filtration, they tend to restrict airflow so much that they are impractical for most residential forced air systems. These filters aren't known for improving air quality, as they don't work too hard and can only trap some of the dust and allergens. The secret is that they can capture tons of waste while using a relatively porous filter material, thanks to the enormous surface area through which dirty air passes - approximately four times more filter material than in a 1-inch filter. The starting price of this type of air filter for air conditioning systems is high, but it should be considered an investment that will last for many years. When it comes to choosing an air filter, it's important to consider your specific needs and environment. If you live in an area with high levels of dust or other airborne particles, then a higher MERV rating may be necessary.
If you have pets or allergies, then a HEPA filter may be necessary. It's also important to consider how often you'll need to replace your filter; if you live in an area with high levels of dust or other airborne particles, then you may need to replace your filter more often than if you live in an area with low levels of dust or other airborne particles. No matter what type of air filter you choose for your home, it's important to make sure that it's installed correctly and maintained regularly. This will ensure that your home's indoor air quality remains at its best and that your HVAC system runs efficiently.
