Can I Use A 4 Inch Filter Instead Of 5?

Can I use 20x25x4 instead of 20x25x5?

No, the 20x25x5 is an inch wider than the other one and would not fit in the slot made for the 20x25x4.

However, if your filter is close to 20x25x4.

5, and the actual dimensions of the 20x25x5 filter are closer to 20x25x4.

5, than they might fit..

Can I use a 1 inch filter instead of 4?

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.

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.

What is the best MERV rating for furnace filters?

Higher rated filters allow less air to flow through though and can force your furnace to work harder and possibly malfunction. A MERV rating between eight and 11 is adequate for most homes.

Is MERV 13 bad for HVAC?

MERV 13 pleated filters are also constructed with synthetic media. Excellent filtration however, not suitable for most hvac systems due to air flow resistance. Check with your furnace manufacturer to ensure that your system is designed for this type of filter.

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.

Why is my furnace filter getting 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.

Are 5 inch filters better?

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.

What MERV rating should I get?

As a general rule, residences do not use higher than MERV 8 filters. 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.

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

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 5 inch furnace filters last?

Rules 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 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.

Which air filter is best?

Best Overall: Honeywell Elite Allergen Pleated FPR 10 Replacement Air Filter. … Best Budget: Rheem Basic Household Pleated FPR 4 Air Filter. … Best for Allergies: Filtrete Micro Allergen Defense AC Furnace Air Filter. … Best for Pets: FilterBuy MERV 8 Pleated AC Furnace Air Filter.More items…•

How do I choose a MERV rating?

MERV ratings range from 1 to 20, with lower ratings denoting a lower-quality filter.MERV 1-4 Filters: Filters with a MERV rating of 1 to 4 do little to trap harmful particles in your home’s air. … MERV 5-8 Filters: MERV ratings of 5 to 8 indicate a medium-quality filter that’s sufficient for most homes.More items…•