Can I Use A 1 Inch Filter Instead Of 4?

Is a 4 inch furnace filter better than a 1 inch?

The 20x25x4 air filter is a bigger furnace than other furnace filters.

At four inches thick, it offers greater surface area to capture more particles and germs from airflow.

It works better and it lasts longer than other cheaper disposable air filters..

Does thickness of furnace filter matter?

Filter thickness: A filter’s thickness can range from 1″ to 5″. As a general rule of thumb, a thicker furnace filter will last longer and can be more efficient. Your system configuration will determine the thickness of the filter that you can use.

How often should you change a 4 inch air filter?

A good rule of thumb is to change 1-2 inch filters every three months, 4 inch filters every six months and 5 inch filters every 12 months. Signs your air filter needs changed: The filter is visibly dirty. Certainly if you can’t see the material of the filter itself, it should be replaced.

How tight should an air filter fit?

Simply so, how tight should an air filter fit? The filters don’t need to fit with an “air tight” seal, but you should be able to easily install and uninstall your filter without a struggle, plus the filter shouldn’t be so small that it moves freely within your unit.

Is a 5 inch furnace 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 HVAC system.

Is MERV 11 or 13 better?

For most household uses, the highest MERV rating used will be MERV 13 filters. … “The MERV 11 air filters remove a higher percentage of contaminants in the air that will increase indoor air quality and maintain the efficiency of the HVAC unit.

Are cheap furnace filters better?

Cheap fiberglass filters are designed to stop dust, debris and hair from gunking up the system. While they do little to filter out allergens and other irritants, using them keeps your HVAC system clean and efficient. … They can add more resistance to airflow, which makes the system more expensive to operate.

Why are furnace filters so expensive?

Furnace filters have been getting more effective in collecting dirt and dust particles since at least the early 1980’s, with corresponding increases in costs of production and profits and costs. The smaller the particle that the filter will trap, the more expensive it is to produce and buy.

What is the most common air filter size?

Standard air filter sizes include:12 X 2414 X 2014 X 3016 X 2516 X 2018 X 3020 X 2020 X 2524 X 244 more rows•Nov 27, 2017

What if air filter is too big?

If you have a filter that is too big for your system, it may seem like an easy enough fix– just fold it over or trim it down, right? … The debris will quickly build up in your AC system, as well as being blown into your home. Heating and cooling systems should always be operated with the proper filter installed.

Can I use a different size air filter?

For most systems you can use a standard sized filter within 5/8-in smaller than the air filter housing. If you are not able to find a standard sized filter within that parameter, you will need to order a custom sized air filter.

Can I use a 4 inch filter instead of 5?

No way! You just need the right kind of high MERV 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 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.

What is the best furnace filter to buy?

BEST OVERALL: Nordic Pure MERV 12 Pleated AC Furnace Air Filters.BEST SMART FILTER: Filtrete Smart AC Furnace Air Filter.BEST BANG FOR THE BUCK: FilterBuy MERV 8 Pleated AC Furnace Air Filter.BEST FOR ALLERGIES: AIRx ALLERGY MERV 11 Pleated Air Filter.BEST FOR PETS: Aerostar Allergen & Pet Dander Pleated Air Filter.More items…

What is the best type of furnace filter to use?

fiberglass ac filtersFurnace manufacturers prefer the traditional spun fiberglass ac filters (MERV 2). These filter out enough of the large particles to protect the furnace while providing maximum airflow.

Does air filter depth matter?

If improving air quality is a priority for you, depth of the filter doesn’t matter so much as MERV. … The higher the MERV rating, the smaller the contaminants a filter can trap—which also means it will clog faster.

Can I use a 1 inch filter instead of 2?

Yes/no. The two inch filters have twice the surface area as a one inch filter. This means that with a 1″ filter, airflow will be restricted much quicker as the filter gets covered in dust.

Do thicker furnace filters last longer?

The thicker the furnace filter, the longer homeowners can go without replacing it. Typically, furnace filter sizes with a thickness or depth up to one inch need to be replaced once every one to three months. In contrast, furnace filter sizes with a thickness of four inches last up to one full year.