Is thicker air filter better?

What thickness air filter should I get?

The general best practice is to use the thickest air filter you can for maximum efficiency. … If your system only fits a 1-inch or 2-inch filter, a high MERV rating could be detrimental. A 1-inch filter with less surface space will get clogged fairly quickly and need to be replaced much sooner than a thicker filter.

Can an air filter be too thick?

If you get a filter with pleats that are too thick, your filter could get dirty quickly. Thus, making your AC unit work harder than it needs to. A good benchmark to follow when considering MERV ratings is that if it’s more than 13, the pleats are most likely too thick for your filter.

Is it better to use a thicker furnace filter?

The Thicker, the Better

Furnace filters can range anywhere from 1″to 5″ in thickness. In general, the thicker the furnace filter is the more efficiently your unit work and the longer it will last.

Is a 5 inch air filters better than 1 inch?

Enhance Indoor Air Quality

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Replacing your standard one-inch air filter with a pleated 5-inch filter can result in better air quality inside your home. That’s because bigger air filters feature higher MERV ratings, leading to better filtration of pollutants and allergens.

Is MERV 13 bad for HVAC?

Filters within a MERV rating of 17-20 are almost never necessary in a residential home. A MERV rating of 13-16 is considered hospital level air quality, so it is unlikely your home needs any more than that.

Can I stack two 1 inch air filters?

Bottom Line: Putting two filters will not make it last longer but may make you have to replace it earlier, assuming it doesn’t already reduce air flow too much with just the filters.

What MERV rating should I use?

We do recommend that everyone uses filters that have at least an 8 MERV rating. These filters will remove the majority of pollutants from your indoor air. If you have serious medical conditions making it difficult to breathe, you might want to get a filter with MERV 9-12 rating.

Are HEPA filters bad for AC?

The more efficient the filter media, the more it strangles duct airflow. … Airflow restriction imposed by in-duct HEPA filters in residential air conditioning systems decreases energy efficiency, reduces performance and can actually diminish indoor air quality by causing pressure imbalances.

Can I use a larger furnace filter?

If your current furnace only allows for furnace filter sizes with a depth of one inch, HVAC contractors can modify the furnace to accommodate larger sizes. This does take work and time. However, homeowners get to use better furnace filter sizes that do more for home comfort. They also worry less about their furnaces.

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Does the size of furnace filter matter?

Does Size Matter? You’ve guessed it! The answer is yes. It is essential to use the right size air filter for your HVAC unit to keep your system running smoothly and to reap all the benefits your air filter has to offer.

Can you stack 1 inch air filters?

In some cases, your intake vents or air handler vents have a filter depth greater than an inch. Because 1 inch air filters are the most common, some homeowners may think it’s okay to layer 1 inch air filters to fit a 2-, 3-, or 4-inch air filter slot. It’s not recommended to do this.

Can I use a 2 inch filter instead of 4?

For the same length and width, you can get 1 inch, 2 inches, 4 inches and even thicker. And all of them will fit your furnace. … For instance, we’ve put a 4 Inch vs 1 Inch furnace filters comparison.

Can I use 4 1 inch filters instead of a 4 inch filter?

If you measure the filter slot, and it’s large enough to accommodate the thicker filter, then you can use it. However, if the slot is less than 4 inches wide, you’re stuck with using that thickness. What you can’t do is stack filters — use only one.