What happens if you use the wrong size air filter?

If the filter doesn't fit properly, it can interfere with the system's airflow to your home. The air filter could also be vacuumed by the system and cause damage.

What happens if you use the wrong size air filter?

If the filter doesn't fit properly, it can interfere with the system's airflow to your home. The air filter could also be vacuumed by the system and cause damage. Incorrect installation of the filter or the absence of a filter allows dust and other debris to accumulate inside the system. Using an incorrectly sized air filter won't necessarily damage the air conditioning system, at least not immediately.

However, it has an impact. Using the wrong size reduces the efficiency of your heating and cooling system. This can quickly add up to a more obvious problem that you'll probably notice on your next utility bill. It's easy to dismiss rising energy bills in South Carolina as a sign of the times.

However, an incorrect air filter can reduce the efficiency of heating and air conditioning systems and increase heating and cooling costs. If the filter is too dense, the heater or air conditioner may need to run longer to counteract the increase in air resistance. A filter that is too small allows contaminants to accumulate on critical components, reducing performance. The right filter will improve your health and comfort without causing utility bills to skyrocket.

When you fold the filter, you get an imperfect seal. Air will filter through and around the curve, bypassing the filter completely. This causes dirt and debris to build up on the fan, slows airflow, degrades performance, reduces air quality, and generally creates a big mess that you'll have to pay to repair or clean it later. It might not seem like a big deal, but using the wrong air filter can lead to health problems and costly HVAC repairs.

An air filter that is too large will not be able to trap allergens, but will allow them to enter the air. Conversely, when the fibers of a filter are too tight, they can prevent adequate airflow, putting pressure on the unit and potentially causing a breakdown. However, it needs to fit snugly into the air filter compartment with a little space around the edges. The biggest concern when you use an incorrectly sized air filter is that it may not effectively prevent dust from accumulating on the motors and fans of the air conditioning system.

So how do you find the air filter that fits perfectly? It's a combination of knowing how to measure an air filter and understanding that the dimensions you see may not be the real ones. Regardless of which type is best for your individual air conditioning system, it's important that you change or clean your air filter frequently. Here's an interesting fact: 70% of what Filterbuy sells doesn't meet the 10 most common air filter sizes. You're shopping at a local home improvement store and suddenly you remember that you need to buy a new air filter.

If the filter is too small, it will be loose and some of the air (and debris) will not pass through the air filter. On the other hand, if the filter is too large, the frame will wrinkle, airflow could be restricted and its durability would be compromised. Installed inside existing ducts, they are much more effective at cleaning air than conventional filters.