Is a 2 inch filter better than a 1 inch?

Most air filters are 1 inch thick, but some systems can accommodate filters 2 to 5 inches thick. In our tests, we found that the thicker the filter, the better it works and the longer the replacement intervals. That means it’s better for you and for your heating, ventilating, and air conditioning (HVAC) system.

Is a 1 or 2 air filter better?

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 I use a 2 inch filter instead of a 1 inch filter?

With the 2 inch pleated filter, even though it is smaller, we have a static pressure of 0.158” WC. As you can see the 2 inch filter will serve our needs MUCH better than the 1 inch filter. Even if the duct system is in good shape, using this filter will keep the system from struggling.

Why does my furnace have 2 filters?

Scenario 1: Your HVAC system has multiple return ducts. This is the most common reason why your central air system has two air filters. Having multiple return vents solves this problem, but it also requires air filters at each vent to properly filter the air and prevent particulates from getting into your fan motor.

Can I use a 2 inch air filter?

Bottom Line: Putting two air filters on a central air system will only have the net effect of producing a higher utility bill and reducing the lifespan of your central air unit. In short, the use of two air filters is just a BAD idea!

What is the advantage of a thicker air filter?

A thicker filter (4-5 inches) has more surface area and therefore allows more room for air to pass through. Do this: If you’re really interested in keeping your air clean, we’d suggest you get an air cleaner/purifier installed in your air ducts.

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.

What happens if you use the wrong size air filter?

When you use the wrong size air filter, or you install it incorrectly, the filter can’t effectively prevent dust from accumulating on the system’s motors and blowers. You’ll end up with a dirty furnace that can’t properly perform, and all of that debris could end up harming the system’s internal components.

Can I use 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.

Does my furnace require two filters?

Horizontal HVAC unit – Furnace filter will be located on the intake side, slid into a rack. Vertical HVAC unit with air moving upwards – You can find your furnace filter in the bottom door. This is where the blower is. This type of furnace or AC unit will most likely require two filters.

Does my AC need two filters?

Whether you choose to put two filters in your central air is up to you; however, systems designed for multiple filters should have them in place. Your air filters help remove dust, dander, allergens, hair, and more from your home. Additionally, they help keep that debris out of your vents.

Which is better a 1 ” or 2 ” air filter?

In my experience, a 1″ filter is just fine. There are different types and ratings of filters though. MERV 8 will catch the big stuff. The higher the MERV rating, the smaller the particle it can catch. Although, being more efficient at catching particulate matter means it will “plug” the filter quicker, resulting in more filter changes.

Can you use a 2 inch air filter grille?

Most return air filter grilles also will accept a 2 inch filter in lieu of a 1 inch filter. If you have return air filter grilles there is another, better, option as well. Honeywell, and some other filter makers, have a product available that uses a 1 inch header and 5 inch filter media.

How big should an air filter be for a HVAC system?

Most air filters are 1 inch thick, but some systems can accommodate filters 2 to 5 inches thick. In our tests, we found that the thicker the filter, the better it works and the longer the replacement intervals. That means it’s better for you and for your HVAC system.

Which is better a 4 inch or 1 inch furnace filter?

4-Inch vs 1-Inch Furnace Filters The 4-inch thick air filter has a definite advantage over the 1” filter in terms of longevity, airflow and maximum filtering potential. Thus, if it fits your furnace, then a 4-inch air filter is better than a 1-inch air filter in regards to improving air quality.