Are 4 inch or 1 inch furnace filters better?

So, if it fits your oven, then a 4-inch air filter is better than a 1-inch air filter when it comes to improving air quality. The short answer? A 4-inch filter will last longer and provide better air quality for your home.

Are 4 inch or 1 inch furnace filters better?

So, if it fits your oven, then a 4-inch air filter is better than a 1-inch air filter when it comes to improving air quality. The short answer? A 4-inch filter will last longer and provide better air quality for your home. The four-inch thick air filter has an advantage over the one-inch one in terms of longevity, airflow and maximum filtering potential. If it fits your boiler, a four-inch air filter will provide better air quality.

The difference in costs is usually minimal. You should replace the filter every three to 12 months of use, depending on the size of the filter. For 1-inch thick filters, the usual recommendation is three months. For filters that are 4 inches or thicker, 12 months are usually.

The higher the MERV rating, the smaller and smaller the particles the oven holds, traps, and keeps away from the air you breathe. But, in general, these are only filters with a MERV rating of at least 11, that is, the classification where the filters begin to trap most particles the size of common allergens. If you can't make a measurement, experts sometimes recommend using a MERV 8 pleated filter as a safe option. However, it is a small and often inexpensive part of the air filter that keeps these heating and cooling systems running.

When HVAC filters get dirty and clogged with debris, air can't flow freely through ductwork, making your home less comfortable and ultimately damaging your HVAC equipment. You may need to replace the filter more often if you have a few very furry pets, for example, or if you live in an area with a lot of air pollution (for example, because of forest fires). If you currently have 1-inch filters, you might consider upgrading your system to include 4-inch filters. You'll get a higher rating when a filter is four or five inches thick, as these filters trap extremely small contaminant particles.

It covers 1-inch vs. 2-inch vs. 4-inch furnace filters with regard to how well they work, how often they need to be replaced, their cost, and other important areas to consider. Particularly vulnerable parts include the air controller or oven fan motor, which works overtime to push and extract air through the dirty filter, and the heat pump or air conditioning compressor, which circulates refrigerant between outdoor and indoor units.

If improving air quality is a priority for you, filter depth doesn't matter as much as the MERV. So, if you choose a filter with a high MERV rating, you'll need to change it every month or two when you use your oven, heat pump or air conditioner a lot.