When it comes to air filters, the nominal size is the dimension that is usually used to label it. These measurements are usually rounded up from the actual size of the filter. It may seem like thicker air filters are the best option since they offer more filtration. In most cases, this is true.
Thicker air filters tend to last longer since they have more square meters to capture and retain air particles. For example, a 1-inch air filter may need to be changed every month, while a 4-inch air filter can last up to six months. Atomic Filters offers OEM filters at a discounted price compared to other sellers. Medium-efficiency MERV filters, such as the Nordic Pure MERV 12, can significantly reduce airborne dust, mold spores, pollen and even smoke, which can help alleviate respiratory diseases according to an NIH study.
Most air conditioning and HVAC units use standard-sized filters, but some require custom-sized air filters. If it fits your boiler, then a 4-inch air filter is better than a 1-inch one for improving air quality. MERV filters with a higher MERV level restrict airflow more than those with a low MERV level, as measured by the drop in air pressure generated by the filters when they are installed. The air is charged with particles, passes through the filter only once, and the results are measured.
The thickness of the air filter ranges from 1 to 5 inches deep; some options are more common than others, and your boiler may determine what thickness it can use. When deciding whether or not to pay more for a better filter, consider if cleaner air is a priority for you. Improperly sized air filters can overload your air conditioning system, damage it and increase your energy bills. If you're looking for a suitable filter, we recommend the Nordic Pure MERV 12 as it usually costs less than other options. In conclusion, when choosing between 16x25x1 and 16x20x1 air filters, it's important to consider your needs and budget. Thicker filters offer more filtration but cost more money.
If you're looking for an affordable option that still offers good filtration, then the Nordic Pure MERV 12 is an excellent choice.
