Are 4 Inch Or 1 Inch Furnace Filters Better?

Should a furnace filter fit tight?

How tight should a furnace filter fit.

When you remove the existing filter, take note of the dimensions printed on its frame.

Your new filter will need to match this size for the system to run efficiently.

It should fit snugly but not so tight that you can’t easily slide the filter in and out..

What happens if you put furnace filter in backwards?

By installing your filter backwards, air will have a harder time flowing through the filter and your air handler will have to work harder to make up for the loss of airflow. This could lead to higher utility bills and possibly damage your furnace or air conditioner.

How often should you change your furnace filter?

every 90 daysThe general rule is to change a furnace filter—usually located behind a return-air vent or in a slot on the furnace itself—at least once every 90 days. Depending on your lifestyle and the type of furnace filter you choose, you may want to swap it out more often.

Do furnace filters matter?

Not only do filters remove dust allergens, mold spores, and other contaminants from the air your family breathes, they also filter out fine dirt particles that can degrade the performance of the HVAC system itself. It’s true! … Spun fiberglass filters are the cheapest, minimum protection for HVAC equipment: 1-4 MERV.

Is it better to use cheap furnace filters?

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.

What type of furnace filter is best?

Best Overall: Honeywell Elite Allergen Pleated FPR 10 Replacement Air Filter. One of the hands-down best furnace filters you can buy is the Honeywell Elite Allergen Pleated Air Filter. This highly-rated filter has the highest FPR possible and comes in a wide range of sizes, fitting most all furnaces.

Why does my furnace filter get dirty so fast?

When the thermostat’s fan setting is set to “ON” the indoor blower will run 24/7, constantly circulating air over the air filter. So now the filter is constantly catching airborne contaminants, causing it to quickly get dirty. Furthermore, your energy bills are higher because running a blower nonstop ain’t cheap.

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.

What is the most common furnace filter size?

The most common furnace filter sizes are 10 X 20, 14 X 20, 16 X 24, 18 X 30, 12 X 12, 14 X 24, 16 X 25, 20 X 20, 12 X 20, 14 X 25, 18 X 18, 20 X 24, 12 X 24, 14 X 30, 18 X 20, 20 X 25, 12 X 30, 15 X 20, 18 X 24, 20 X 30, 12 X 36, 16 X 20, 18 X 25, 4 X 24, and 25 X 25, and these sizes range in depth from 1 to 6 inches.

Is a thicker furnace filter better?

The Thicker, the Better In general, the thicker the furnace filter is the more efficiently your unit work and the longer it will last.

Are 4 inch furnace filters worth it?

You’ll change 4-inch filters a lot less than 1-inch filters. … That means they have more surface area to catch particles, making them last 3–5 times longer than 1-inch filters. Most HVAC technicians recommend changing 1-inch air filters every 30 days, while 4-inch filters can be changed every 3–6 months.

How long do 4 inch furnace filters last?

6 to 8 monthsRules of thumbs are 1 inch filters change at least every three months if not sooner, 2 inch filters 4 months, 4 inch filters can last 6 to 8 months and 5 inch filters can last as long as a year depending on the quality. If you can see dirt on your filter it is about 50% plugged.

Is a 5 inch furnace filter better than a 1 inch?

Filter thickness varies from one to five inches, and in general, the thicker the filter, the more particle-blocking ability it will have.

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.

Is MERV 13 bad for HVAC?

While the highest MERV ratings are the most effective for air quality, they can harm your HVAC system. A higher MERV rating means a higher resistance, which means less airflow….Learn how to maintain your. home and HVAC this fall.MERVMinimum Particle Size9–123.0–1.0 μm13–161.0–0.3 μm17–20< 0.3 μm2 more rows•Sep 20, 2019

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.

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

While a 4-inch-thick filter is more efficient than a 1-inch filter, the right size depends on your furnace. 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.

Is a 2 inch filter better than a 1 inch?

When it comes to a 1 inch vs 2 inch furnace filter you could use a 2 inch filter if your vent is deep enough and a 2 inch filter will generally last longer since it has more media.