When it comes to air filters, the general consensus is that the thicker the filter, the better it is at capturing airborne particles and protecting your HVAC system from dust, dirt, and debris. In this regard, a 4-inch air filter is superior to a 1-inch air filter. This is because the 4-inch filter has a larger surface area and can trap more particles than the 1-inch filter. Additionally, the 4-inch filter has better airflow numbers and can last up to six months, while the 1-inch filter needs to be changed every month.
The two-inch pleated filter has a much bigger surface area than the one-inch filter, measuring 8.5 square feet compared to 2.7 square feet. The two-inch non-pleated filter has a thicker medium but no more surface area. However, it is much more restrictive than the pleated filter. Ovens come in various sizes and configurations, meaning there's no one-size-fits-all filter.
To get the right fit and optimize performance, you need to consider not only length and width but also thickness. The filters are available with a thickness of one inch to five inches for normal and everyday filtering applications. The 4-inch-thick air filter has a clear advantage over the 1-filter filter in terms of durability, airflow and maximum filtering potential. However, there are some cases where 1-inch and 2-inch filters may be just as efficient.
That said, the 1-inch filter can be too shallow, causing a loose fit that allows unfiltered air to enter the ducts. When it comes to choosing an air filter for your home, it's important to consider all of your options. While a 4-inch air filter may be more effective at trapping particles and providing better airflow than a 1-inch filter, it may not be necessary for your particular HVAC system or home size. It's best to consult with an expert who can help you determine which type of air filter is best for your needs.
